hi folks,
I would like some technical opinions, i just did a cylinder head for myself (motorcylce 2 valve single cyl,32 cui, int valve 1.92, ex.valve1.65 revable up to about 9500, but would love Tq at about 7-8(perhaps8.5)grand to play it safe with rpm´s, similar port architecture as SBC), and did some flowbenching, what resulted in these#´s for the intake:
1mm 20.03cfm @25"
2mm 51.11
3mm 77.93
4mm 95.04
5mm 118.34
6mm 150.15
7mm 161.88
8mm 175.5
9mm 195.29
10mm 208.05
11mm 209.93
12mm 215.55
13mm 221.16
14mm 225.49
15mm 230.89
The numbers are a lil unprecise since i had no threaded adjuster but give somewhat a tendency of lift potential.
In this head i currently use a camshaft with following specs:
28 / 65 @0.040 and 65 / 28@ 0.040 valvelift(OHC) on both 0.50" lift@overlap is about3.5mm´s
I got about 49-50enginehorses an max Tq at 6000rpm´s out of this setup, maybe the headerlength could be still a lil tweaked.
So considering the valvelift to which the port flows, aint i wasting port/valvearea (Cd) using only 0.5"?? My assumption woul be either to get one of the following two cams:
#1:
Intake37 /68 lift0.585 exhaust 68 35 lift0.580 lift@overlap4.5mm
#2:
in43 / 73 lift0.590 ex 77 43 lift 0.530 lift@overlap a5.8mm
Does this make sense as i planned on buying one of these cams in order to get usage of the flowpotential, i was expecting max Tq @about7500 with the intake closing of the 2nd cam, but im somewhat afraid of the overlap(5.8mm´s), since i´ll definitely have to reangle valves a somewhat pricey and unsafe method over here, cuz otherwise the valves will collide.
oh yeah stroke by bore is 3.30 x 3.50 but the bore could be enlarged up to 3.66"
As this engine will be solely used on the track, power below 4-5000rpms is no issue.
thanks a lot for your input
Port / camshaft/ flow question on 2valve???
Moderator: Team
-
bill jones
- Guru
- Posts: 2650
- Joined: Sun Sep 05, 2004 6:38 pm
- Location: salt lake city, ut
- Contact:
yup forgot about that, sorry:
here it goes:
hi folks,
I would like some technical opinions, i just did a cylinder head for myself (motorcylce 2 valve single cyl,32 cui, int valve 1.92, ex.valve1.65 revable up to about 9500, but would love Tq at about 7-8(perhaps8.5)grand to play it safe with rpm´s, similar port architecture as SBC), and did some flowbenching, what resulted in these#´s for the intake:
0.04" 20.03cfm @25"
0.08" 51.11
0.11" 77.93
0.15" 95.04
0.19" 118.34
0.23" 150.15
0.27" 161.88
0.31" 175.5
0.35" 195.29
0.39 208.05
0.43" 209.93
0.47" 215.55
0.511" 221.16
0.55" 225.49
0.59" 230.89
The numbers are a lil unprecise since i had no threaded adjuster but give somewhat a tendency of lift potential, and port behaviour.
In this head i currently use a camshaft with following specs:
intake 28 / 65 @0.040 and exhaust 65 / 28@ 0.040 valvelift(OHC), on both 0.50" lift@overlap is about 0.138"
I got about 49-50enginehorses an max Tq at 6000rpm´s out of this setup, maybe the headerlength could be still a lil tweaked.
So considering the valvelift to which the port flows, aint i wasting port/valvearea (Cd) using only 0.5"?? My assumption woul be either to get one of the following two cams:
#1:
Intake37 /68 lift0.585 exhaust 68 35 lift0.580 lift@overlap 0.18
#2:
in43 / 73 lift0.590 ex 77 43 lift 0.530 lift@overlap 0.23"
Does this make sense as i planned on buying one of these cams in order to get usage of the flowpotential, i was expecting max Tq @about7500 with the intake closing of the 2nd cam, but im somewhat afraid of the overlap(0.23"), since i´ll definitely have to reangle valves a somewhat pricey and unsafe method over here, cuz otherwise the valves will collide.
oh yeah stroke by bore is 3.30 x 3.50 but the bore could be enlarged up to 3.66"
As this engine will be solely used on the track, power below 4-5000rpms is no issue.
thanks a lot for your input, hope its all converted yet.
_________________
There is always advancement to be made.
here it goes:
hi folks,
I would like some technical opinions, i just did a cylinder head for myself (motorcylce 2 valve single cyl,32 cui, int valve 1.92, ex.valve1.65 revable up to about 9500, but would love Tq at about 7-8(perhaps8.5)grand to play it safe with rpm´s, similar port architecture as SBC), and did some flowbenching, what resulted in these#´s for the intake:
0.04" 20.03cfm @25"
0.08" 51.11
0.11" 77.93
0.15" 95.04
0.19" 118.34
0.23" 150.15
0.27" 161.88
0.31" 175.5
0.35" 195.29
0.39 208.05
0.43" 209.93
0.47" 215.55
0.511" 221.16
0.55" 225.49
0.59" 230.89
The numbers are a lil unprecise since i had no threaded adjuster but give somewhat a tendency of lift potential, and port behaviour.
In this head i currently use a camshaft with following specs:
intake 28 / 65 @0.040 and exhaust 65 / 28@ 0.040 valvelift(OHC), on both 0.50" lift@overlap is about 0.138"
I got about 49-50enginehorses an max Tq at 6000rpm´s out of this setup, maybe the headerlength could be still a lil tweaked.
So considering the valvelift to which the port flows, aint i wasting port/valvearea (Cd) using only 0.5"?? My assumption woul be either to get one of the following two cams:
#1:
Intake37 /68 lift0.585 exhaust 68 35 lift0.580 lift@overlap 0.18
#2:
in43 / 73 lift0.590 ex 77 43 lift 0.530 lift@overlap 0.23"
Does this make sense as i planned on buying one of these cams in order to get usage of the flowpotential, i was expecting max Tq @about7500 with the intake closing of the 2nd cam, but im somewhat afraid of the overlap(0.23"), since i´ll definitely have to reangle valves a somewhat pricey and unsafe method over here, cuz otherwise the valves will collide.
oh yeah stroke by bore is 3.30 x 3.50 but the bore could be enlarged up to 3.66"
As this engine will be solely used on the track, power below 4-5000rpms is no issue.
thanks a lot for your input, hope its all converted yet.
_________________
There is always advancement to be made.
There is always advancement to be made.
no ideas ANYONE??
im still clueless if i should go with a hi lift cam that might support higher revs as everbody i know seems to be not a big fan of hi lift cams.
But even on hi lift ports??
any ideas will be greatly appreciated, as i would like to have bigger insight on the flow capacity thing.
Is there still anything left unconverted??
thanks
im still clueless if i should go with a hi lift cam that might support higher revs as everbody i know seems to be not a big fan of hi lift cams.
But even on hi lift ports??
any ideas will be greatly appreciated, as i would like to have bigger insight on the flow capacity thing.
Is there still anything left unconverted??
thanks
There is always advancement to be made.
-
OldSStroker
- Guru
- Posts: 1261
- Joined: Wed Feb 16, 2005 6:14 pm
- Location: Upstate New York
Thoughts:Ape wrote:no ideas ANYONE??
im still clueless if i should go with a hi lift cam that might support higher revs as everbody i know seems to be not a big fan of hi lift cams.
But even on hi lift ports??
any ideas will be greatly appreciated, as i would like to have bigger insight on the flow capacity thing.
Is there still anything left unconverted??
thanks
Getting torque to peak above 7K will be a big challenge. Even with 9500 rpm capabililty, I think you are a little weak on airflow to get power peak in the high 8s.
According to your flow numbers you haven't found max flow lift yet. Lift can be your friend if you can control the valve motion.
I think your engine is a very good candidate for some serious modelling on a good engine simulator. Most of the folks who are good at simulation and correlation to the real engines do it for a living, and don't have a lot of time for gratis designs.
I doubt if you'll approach 70+ hp on gasoline and NA. That's Nextel Cup hp/cube teritory. Low-mid 60s might be quite doable.
-
bill jones
- Guru
- Posts: 2650
- Joined: Sun Sep 05, 2004 6:38 pm
- Location: salt lake city, ut
- Contact:
-is this a hemi?
-can you buy the cam with different lobe spreads---something other than 105 to 106 spreads?
-Do you plan to change the angle on one valve guide or both?
-Do these flow numbers include the entire intake and exhaust conduits?
-I only see about 56 HP worth of air in those intake numbers but if you haven't flowed the entire intake system the honest flow would most likely be less?
-What is the compression ratio? how much more can you squeeze if you were greedy?
-can you buy the cam with different lobe spreads---something other than 105 to 106 spreads?
-Do you plan to change the angle on one valve guide or both?
-Do these flow numbers include the entire intake and exhaust conduits?
-I only see about 56 HP worth of air in those intake numbers but if you haven't flowed the entire intake system the honest flow would most likely be less?
-What is the compression ratio? how much more can you squeeze if you were greedy?
-
maxracesoftware
- Vendor
- Posts: 3651
- Joined: Sat Feb 14, 2004 4:04 pm
- Location: Abbeville, LA
- Contact:
here's a Simulation on your Combono ideas ANYONE??
im still clueless if i should go with a hi lift cam that might support higher revs as everbody i know seems to be not a big fan of hi lift cams.
But even on hi lift ports??
any ideas will be greatly appreciated, as i would like to have bigger insight on the flow capacity thing.
Is there still anything left unconverted??
thanks
Code: Select all
____________________________________________________________________________
--- Single Primary Pipe Specs --- for 31.750 CID engine at 8500 RPM
Diameter= 1.693 Length= 23.5 to 26.0 inches long
--- 2-Step Primary Pipe Specs ---
1st Dia.= 1.693 Length= 11.7 to 13.0
2nd Dia.= 1.818 Length= 11.7 to 13.0
--- 3-Step Primary Pipe Specs ---
1st Dia.= 1.568 Length= 11.7 to 13.0
2nd Dia.= 1.693 Length= 5.9 to 6.5
3rd Dia.= 1.818 Length= 5.9 to 6.5
Note-> all Pipe Diameters are OD and based-off .0625 inch Pipe thickness
____________________________________________________________________________
31.750 Cubic Inches @ 8500 RPM with 110.0 % Volumetric Efficiency PerCent
Required Intake Flow between 225.9 CFM and 238.4 CFM at 28 Inches
Required Exhaust Flow between 180.4 CFM and 194.1 CFM at 28 Inches
Steady-State Dyno Test Low Normal Best
Peak HorsePower 30.9 40.9 50.9
Peak Torque Lbs-Ft 20.8 27.0 33.2
BMEP in psi 98.6 128.1 157.6
Carb CFM at 1.5 in Hg. 86 96 105
Target EGT= 1234 degrees F during 4 second 600 RPM/Sec Dyno accel. test
Octane (R+M)/2 Method = 107.4 to 108.8 Octane required range
Air Standard Efficiency = 64.951 % for 12.500:1 Compression Ratio
----- Engine Design Specifications -----
Engine Size CID = 31.750 Intake Valve Net Area = 2.846
CID per Cylinder = 31.750 Intake Valve Dia. Area = 2.895
Rod/Stroke Ratio = 1.515 Intake Valve Stem Area = 0.049
Bore/Stroke Ratio = 1.061 Exhaust Valve Net Area = 2.089
Int Valve/Bore Ratio = 0.549 Exhaust Valve Dia. Area = 2.138
Exh Valve/Bore Ratio = 0.471 Exhaust Valve Stem Area = 0.049
Exh/Int Valve Ratio = 0.859 Exh/Int Valve Area Ratio = 0.739
Intake Valve Margin CC Exhaust Valve Margin CC
1.00 CC = 0.0211 1.00 CC = 0.0285
0.50 CC = 0.0105 0.50 CC = 0.0143
0.25 CC = 0.0053 0.25 CC = 0.0071
0.10 CC = 0.0021 0.10 CC = 0.0029
------- Current Camshaft Specs @ .050 -------
IntOpen= 29.50 IntClose= 69.50 ExhOpen= 68.50 ExhClose= 28.50
Intake Duration @ .050 = 279.00 Exhaust Duration @ .050 = 277.00
Intake CenterLine = 110.00 Exhaust CenterLine = 110.00
Compression Duration= 110.50 Power Duration = 111.50
OverLap Duration = 58.00 Lobe Center Angle (LCA)= 110.00
Camshaft installed Straight Up = 0.00 degrees
-Recommended Camshaft Valve Lift- - Induction Tuned Lengths -
Minimum Normal Maximum Best Length= 11.478 2nd= 9.034
Intake = 0.552 0.588 0.625 3rd Best= 7.330 4th Best= 6.167
Exhaust = 0.488 0.521 0.553 Plenum Runner Max Entry Area = 3.686
Current Intake Valve Curtain Area / Time Choke RPM = 8198 RPM
Minimum Intake Valve Lift to prevent Choke = .588 Lift @ 8500 RPM
Cylinder Head Intake Port Sonic-Choke min. cross-area = 1.547 sq.inches
Intake Intake Curtain Area Recommended Port Lift/Dia
Valve Choke Square Inches Cross-Sect. Area Ratios
Lift RPM Intake Exhaust Intake Exhaust Int Exh
.050 701 0.302 0.259 0.181 0.153 .026 .030
.075 1051 0.452 0.389 0.271 0.230 .039 .045
.100 1401 0.603 0.518 0.362 0.306 .052 .061
.125 1752 0.754 0.648 0.452 0.383 .065 .076
.150 2102 0.905 0.778 0.543 0.459 .078 .091
.175 2452 1.056 0.907 0.633 0.536 .091 .106
.200 2803 1.206 1.037 0.724 0.612 .104 .121
.225 3153 1.357 1.166 0.814 0.689 .117 .136
.250 3504 1.508 1.296 0.904 0.766 .130 .152
.275 3854 1.659 1.426 0.995 0.842 .143 .167
.300 4204 1.810 1.555 1.085 0.919 .156 .182
.325 4555 1.960 1.685 1.176 0.995 .169 .197
.350 4905 2.111 1.814 1.266 1.072 .182 .212
.375 5255 2.262 1.944 1.357 1.148 .195 .227
.400 5606 2.413 2.073 1.447 1.225 .208 .242
Intake Intake Curtain Area Recommended Port Lift/Dia
Valve Choke Square Inches Cross-Sect. Area Ratios
Lift RPM Intake Exhaust Intake Exhaust Int Exh
.425 5956 2.564 2.203 1.538 1.301 .221 .258
.450 6306 2.714 2.333 1.628 1.378 .234 .273
.475 6657 2.865 2.462 1.718 1.455 .247 .288
.500 7007 3.016 2.592 1.809 1.531 .260 .303
.525 7357 3.167 2.721 1.899 1.608 .273 .318
.550 7708 3.318 2.851 1.990 1.684 .286 .333
.575 8058 3.468 2.981 2.080 1.761 .299 .348
.600 8408 3.619 3.110 2.171 1.837 .313 .364
.625 8759 3.770 3.240 2.261 1.914 .326 .379
.650 9109 3.921 3.369 2.352 1.991 .339 .394
.675 9459 4.072 3.499 2.442 2.067 .352 .409
.700 9810 4.222 3.629 2.533 2.144 .365 .424
.725 10160 4.373 3.758 2.623 2.220 .378 .439
.750 10511 4.524 3.888 2.713 2.297 .391 .455
.775 10861 4.675 4.017 2.804 2.373 .404 .470
.800 11211 4.825 4.147 2.894 2.450 .417 .485
____________________________________________________________________________
Crank Head Piston Piston Piston Volume Crank Rod-to- Rod-to-
Angle CFM @ CFM @ Depth Speed CC per Rotate Bore Crank
Degree 28 in. 28 in. inches Ft/Min degree TimeSec Angle Angle
72.6 225.8 265.6 1.4110 7699.0 222.45 .00142 18.35 89.05
72.7 225.8 265.6 1.4140 7699.3 222.93 .00143 18.37 88.93
72.8 225.8 265.7 1.4170 7699.6 223.40 .00143 18.38 88.82
72.9 225.8 265.7 1.4201 7699.9 223.88 .00143 18.39 88.71
73.0 225.8 265.7 1.4231 7700.2 224.36 .00143 18.40 88.60
73.1 225.8 265.7 1.4261 7700.4 224.84 .00143 18.41 88.49
73.2 225.8 265.7 1.4292 7700.6 225.32 .00144 18.42 88.38
73.3 225.8 265.7 1.4322 7700.7 225.80 .00144 18.43 88.27
73.4 225.8 265.7 1.4352 7700.9 226.27 .00144 18.44 88.16
73.5 225.8 265.7 1.4383 7701.0 226.75 .00144 18.45 88.05
73.6 225.8 265.7 1.4413 7701.1 227.23 .00144 18.46 87.94
73.7 225.9 265.7 1.4443 7701.1 227.71 .00145 18.47 87.83
73.8 225.9 265.7 1.4474 7701.1 228.19 .00145 18.48 87.72
73.9 225.9 265.7 1.4504 7701.1 228.67 .00145 18.49 87.61
74.0 225.9 265.7 1.4534 7701.1 229.14 .00145 18.49 87.51
74.1 225.8 265.7 1.4565 7701.0 229.62 .00145 18.50 87.40
74.2 225.8 265.7 1.4595 7700.9 230.10 .00145 18.51 87.29
74.3 225.8 265.7 1.4625 7700.8 230.58 .00146 18.52 87.18
74.4 225.8 265.7 1.4656 7700.6 231.06 .00146 18.53 87.07
74.5 225.8 265.7 1.4686 7700.5 231.54 .00146 18.54 86.96
74.6 225.8 265.7 1.4716 7700.2 232.01 .00146 18.55 86.85
74.7 225.8 265.7 1.4747 7700.0 232.49 .00146 18.56 86.74
74.8 225.8 265.7 1.4777 7699.7 232.97 .00147 18.57 86.63
74.9 225.8 265.6 1.4807 7699.4 233.45 .00147 18.58 86.52
75.0 225.8 265.6 1.4838 7699.1 233.93 .00147 18.59 86.41
75.1 225.8 265.6 1.4868 7698.7 234.40 .00147 18.60 86.30
75.2 225.8 265.6 1.4898 7698.3 234.88 .00147 18.61 86.19
75.3 225.8 265.6 1.4929 7697.9 235.36 .00148 18.61 86.09
75.4 225.7 265.6 1.4959 7697.5 235.84 .00148 18.62 85.98
75.5 225.7 265.6 1.4989 7697.0 236.32 .00148 18.63 85.87
75.6 225.7 265.5 1.5020 7696.5 236.79 .00148 18.64 85.76
75.7 225.7 265.5 1.5050 7696.0 237.27 .00148 18.65 85.65
75.8 225.7 265.5 1.5080 7695.4 237.75 .00149 18.66 85.54
75.9 225.7 265.5 1.5110 7694.8 238.23 .00149 18.67 85.43
76.0 225.6 265.5 1.5141 7694.2 238.71 .00149 18.67 85.33
76.1 225.6 265.4 1.5171 7693.5 239.18 .00149 18.68 85.22
76.2 225.6 265.4 1.5201 7692.9 239.66 .00149 18.69 85.11
76.3 225.6 265.4 1.5232 7692.2 240.14 .00150 18.70 85.00
76.4 225.6 265.4 1.5262 7691.4 240.62 .00150 18.71 84.89
76.5 225.5 265.3 1.5292 7690.7 241.09 .00150 18.72 84.78
76.6 225.5 265.3 1.5322 7689.9 241.57 .00150 18.72 84.68
76.7 225.5 265.3 1.5353 7689.1 242.05 .00150 18.73 84.57
76.8 225.5 265.3 1.5383 7688.2 242.52 .00151 18.74 84.46
76.9 225.4 265.2 1.5413 7687.3 243.00 .00151 18.75 84.35
77.0 225.4 265.2 1.5444 7686.4 243.48 .00151 18.76 84.24
77.1 225.4 265.2 1.5474 7685.5 243.96 .00151 18.76 84.14
77.2 225.4 265.1 1.5504 7684.5 244.43 .00151 18.77 84.03
77.3 225.3 265.1 1.5534 7683.5 244.91 .00152 18.78 83.92
77.4 225.3 265.1 1.5565 7682.5 245.39 .00152 18.79 83.81
77.5 225.3 265.0 1.5595 7681.5 245.86 .00152 18.79 83.71
77.6 225.2 265.0 1.5625 7680.4 246.34 .00152 18.80 83.60
77.7 225.2 265.0 1.5655 7679.3 246.82 .00152 18.81 83.49
77.8 225.2 264.9 1.5685 7678.2 247.29 .00153 18.82 83.38
77.9 225.1 264.9 1.5716 7677.0 247.77 .00153 18.82 83.28
78.0 225.1 264.8 1.5746 7675.8 248.25 .00153 18.83 83.17
78.1 225.1 264.8 1.5776 7674.6 248.72 .00153 18.84 83.06
78.2 225.0 264.7 1.5806 7673.4 249.20 .00153 18.85 82.95
78.3 225.0 264.7 1.5836 7672.1 249.67 .00154 18.85 82.85
78.4 225.0 264.7 1.5867 7670.8 250.15 .00154 18.86 82.74
78.5 224.9 264.6 1.5897 7669.5 250.63 .00154 18.87 82.63
78.6 224.9 264.6 1.5927 7668.1 251.10 .00154 18.87 82.53
78.7 224.8 264.5 1.5957 7666.8 251.58 .00154 18.88 82.42
78.8 224.8 264.5 1.5987 7665.4 252.05 .00155 18.89 82.31
78.9 224.8 264.4 1.6018 7663.9 252.53 .00155 18.89 82.21
79.0 224.7 264.4 1.6048 7662.5 253.00 .00155 18.90 82.10
79.1 224.7 264.3 1.6078 7661.0 253.48 .00155 18.91 81.99
79.2 224.6 264.3 1.6108 7659.4 253.95 .00155 18.91 81.89
79.3 224.6 264.2 1.6138 7657.9 254.43 .00155 18.92 81.78
79.4 224.5 264.2 1.6168 7656.3 254.90 .00156 18.93 81.67
79.5 224.5 264.1 1.6198 7654.7 255.38 .00156 18.93 81.57
79.6 224.4 264.1 1.6228 7653.1 255.85 .00156 18.94 81.46
79.7 224.4 264.0 1.6259 7651.5 256.33 .00156 18.95 81.35
79.8 224.3 263.9 1.6289 7649.8 256.80 .00156 18.95 81.25
79.9 224.3 263.9 1.6319 7648.1 257.28 .00157 18.96 81.14
80.0 224.2 263.8 1.6349 7646.3 257.75 .00157 18.96 81.04
____________________________________________________________________________
CID= 31.750 --- Fuel Consumed in Lbs/Hour ---
CFM @ 12.5:1 13.2:1 14.0:1 14.7:1 16.0:1 Fuel Engine
Engine 110.0 A/F A/F A/F A/F A/F Heat Friction
RPM Ve % Lbs/Hr Lbs/Hr Lbs/Hr Lbs/Hr Lbs/Hr HP HP
6000 60.6 20.2 19.1 18.0 17.2 15.8 143 8.9
6100 61.6 20.5 19.4 18.3 17.5 16.0 146 9.1
6200 62.7 20.9 19.8 18.6 17.7 16.3 148 9.4
6300 63.7 21.2 20.1 18.9 18.0 16.6 151 9.7
6400 64.7 21.5 20.4 19.2 18.3 16.8 153 10.0
6500 65.7 21.9 20.7 19.5 18.6 17.1 155 10.3
6600 66.7 22.2 21.0 19.8 18.9 17.3 158 10.7
6700 67.7 22.5 21.3 20.1 19.2 17.6 160 11.1
6800 68.7 22.9 21.7 20.4 19.5 17.9 163 11.4
6900 69.7 23.2 22.0 20.7 19.7 18.1 165 11.8
7000 70.7 23.6 22.3 21.0 20.0 18.4 167 12.2
7100 71.7 23.9 22.6 21.3 20.3 18.7 170 12.6
7200 72.8 24.2 22.9 21.6 20.6 18.9 172 13.0
7300 73.8 24.6 23.3 21.9 20.9 19.2 175 13.4
7400 74.8 24.9 23.6 22.2 21.2 19.5 177 13.9
7500 75.8 25.2 23.9 22.5 21.5 19.7 179 14.4
7600 76.8 25.6 24.2 22.8 21.7 20.0 182 14.9
7700 77.8 25.9 24.5 23.1 22.0 20.2 184 15.4
7800 78.8 26.2 24.9 23.4 22.3 20.5 187 15.9
7900 79.8 26.6 25.2 23.7 22.6 20.8 189 16.4
8000 80.8 26.9 25.5 24.0 22.9 21.0 191 17.0
CID= 31.750 --- Fuel Consumed in Lbs/Hour ---
CFM @ 12.5:1 13.2:1 14.0:1 14.7:1 16.0:1 Fuel Engine
Engine 110.0 A/F A/F A/F A/F A/F Heat Friction
RPM Ve % Lbs/Hr Lbs/Hr Lbs/Hr Lbs/Hr Lbs/Hr HP HP
8100 81.9 27.3 25.8 24.3 23.2 21.3 194 17.5
8200 82.9 27.6 26.1 24.6 23.5 21.6 196 18.1
8300 83.9 27.9 26.4 24.9 23.7 21.8 198 18.6
8400 84.9 28.3 26.8 25.2 24.0 22.1 201 19.2
8500 85.9 28.6 27.1 25.5 24.3 22.3 203 19.8
8600 86.9 28.9 27.4 25.8 24.6 22.6 206 20.4
8700 87.9 29.3 27.7 26.1 24.9 22.9 208 21.1
8800 88.9 29.6 28.0 26.4 25.2 23.1 210 21.7
8900 89.9 29.9 28.4 26.7 25.5 23.4 213 22.3
9000 90.9 30.3 28.7 27.0 25.7 23.7 215 23.0
9100 92.0 30.6 29.0 27.3 26.0 23.9 218 23.6
9200 93.0 31.0 29.3 27.6 26.3 24.2 220 24.3
9300 94.0 31.3 29.6 27.9 26.6 24.4 222 25.0
9400 95.0 31.6 30.0 28.2 26.9 24.7 225 25.7
9500 96.0 32.0 30.3 28.5 27.2 25.0 227 26.4
9600 97.0 32.3 30.6 28.8 27.5 25.2 230 27.2
9700 98.0 32.6 30.9 29.1 27.8 25.5 232 27.9
9800 99.0 33.0 31.2 29.4 28.0 25.8 234 28.6
9900 100.0 33.3 31.5 29.7 28.3 26.0 237 29.4
10000 101.1 33.6 31.9 30.0 28.6 26.3 239 30.2
Note=> Air/Fuel Ratio will shift towards 12.5:1 to 13.2:1
for non-acceleration Steady-State type Dyno test.
Air/Fuel Ratio will shift towards 14.0:1 to 14.7:1
for 600 RPM/SEC acceleration type Dyno test
-
maxracesoftware
- Vendor
- Posts: 3651
- Joined: Sat Feb 14, 2004 4:04 pm
- Location: Abbeville, LA
- Contact:
Simulation at 9500 RPM
Code: Select all
____________________________________________________________________________
--- Single Primary Pipe Specs --- for 31.750 CID engine at 9500 RPM
Diameter= 1.790 Length= 20.7 to 23.3 inches long
--- 2-Step Primary Pipe Specs ---
1st Dia.= 1.790 Length= 10.3 to 11.6
2nd Dia.= 1.915 Length= 10.3 to 11.6
--- 3-Step Primary Pipe Specs ---
1st Dia.= 1.665 Length= 10.3 to 11.6
2nd Dia.= 1.790 Length= 5.2 to 5.8
3rd Dia.= 1.915 Length= 5.2 to 5.8
Note-> all Pipe Diameters are OD and based-off .0625 inch Pipe thickness
____________________________________________________________________________
31.750 Cubic Inches @ 9500 RPM with 110.0 % Volumetric Efficiency PerCent
Required Intake Flow between 252.4 CFM and 266.8 CFM at 28 Inches
Required Exhaust Flow between 201.7 CFM and 216.9 CFM at 28 Inches
Steady-State Dyno Test Low Normal Best
Peak HorsePower 39.4 49.7 60.1
Peak Torque Lbs-Ft 23.2 28.8 34.3
BMEP in psi 110.2 136.6 163.1
Carb CFM at 1.5 in Hg. 96 107 118
Target EGT= 1234 degrees F during 4 second 600 RPM/Sec Dyno accel. test
Octane (R+M)/2 Method = 107.1 to 108.8 Octane required range
Air Standard Efficiency = 64.951 % for 12.500:1 Compression Ratio
----- Engine Design Specifications -----
Engine Size CID = 31.750 Intake Valve Net Area = 2.846
CID per Cylinder = 31.750 Intake Valve Dia. Area = 2.895
Rod/Stroke Ratio = 1.515 Intake Valve Stem Area = 0.049
Bore/Stroke Ratio = 1.061 Exhaust Valve Net Area = 2.089
Int Valve/Bore Ratio = 0.549 Exhaust Valve Dia. Area = 2.138
Exh Valve/Bore Ratio = 0.471 Exhaust Valve Stem Area = 0.049
Exh/Int Valve Ratio = 0.859 Exh/Int Valve Area Ratio = 0.739
Intake Valve Margin CC Exhaust Valve Margin CC
1.00 CC = 0.0211 1.00 CC = 0.0285
0.50 CC = 0.0105 0.50 CC = 0.0143
0.25 CC = 0.0053 0.25 CC = 0.0071
0.10 CC = 0.0021 0.10 CC = 0.0029
------- Current Camshaft Specs @ .050 -------
IntOpen= 29.50 IntClose= 69.50 ExhOpen= 68.50 ExhClose= 28.50
Intake Duration @ .050 = 279.00 Exhaust Duration @ .050 = 277.00
Intake CenterLine = 110.00 Exhaust CenterLine = 110.00
Compression Duration= 110.50 Power Duration = 111.50
OverLap Duration = 58.00 Lobe Center Angle (LCA)= 110.00
Camshaft installed Straight Up = 0.00 degrees
-Recommended Camshaft Valve Lift- - Induction Tuned Lengths -
Minimum Normal Maximum Best Length= 10.270 2nd= 8.083
Intake = 0.617 0.658 0.699 3rd Best= 6.559 4th Best= 5.518
Exhaust = 0.546 0.582 0.618 Plenum Runner Max Entry Area = 3.686
Current Intake Valve Curtain Area / Time Choke RPM = 8198 RPM
Minimum Intake Valve Lift to prevent Choke = .657 Lift @ 9500 RPM
Cylinder Head Intake Port Sonic-Choke min. cross-area = 1.729 sq.inches
Intake Intake Curtain Area Recommended Port Lift/Dia
Valve Choke Square Inches Cross-Sect. Area Ratios
Lift RPM Intake Exhaust Intake Exhaust Int Exh
.050 701 0.302 0.259 0.181 0.153 .026 .030
.075 1051 0.452 0.389 0.271 0.230 .039 .045
.100 1401 0.603 0.518 0.362 0.306 .052 .061
.125 1752 0.754 0.648 0.452 0.383 .065 .076
.150 2102 0.905 0.778 0.543 0.459 .078 .091
.175 2452 1.056 0.907 0.633 0.536 .091 .106
.200 2803 1.206 1.037 0.724 0.612 .104 .121
.225 3153 1.357 1.166 0.814 0.689 .117 .136
.250 3504 1.508 1.296 0.904 0.766 .130 .152
.275 3854 1.659 1.426 0.995 0.842 .143 .167
.300 4204 1.810 1.555 1.085 0.919 .156 .182
.325 4555 1.960 1.685 1.176 0.995 .169 .197
.350 4905 2.111 1.814 1.266 1.072 .182 .212
.375 5255 2.262 1.944 1.357 1.148 .195 .227
.400 5606 2.413 2.073 1.447 1.225 .208 .242
Intake Intake Curtain Area Recommended Port Lift/Dia
Valve Choke Square Inches Cross-Sect. Area Ratios
Lift RPM Intake Exhaust Intake Exhaust Int Exh
.425 5956 2.564 2.203 1.538 1.301 .221 .258
.450 6306 2.714 2.333 1.628 1.378 .234 .273
.475 6657 2.865 2.462 1.718 1.455 .247 .288
.500 7007 3.016 2.592 1.809 1.531 .260 .303
.525 7357 3.167 2.721 1.899 1.608 .273 .318
.550 7708 3.318 2.851 1.990 1.684 .286 .333
.575 8058 3.468 2.981 2.080 1.761 .299 .348
.600 8408 3.619 3.110 2.171 1.837 .313 .364
.625 8759 3.770 3.240 2.261 1.914 .326 .379
.650 9109 3.921 3.369 2.352 1.991 .339 .394
.675 9459 4.072 3.499 2.442 2.067 .352 .409
.700 9810 4.222 3.629 2.533 2.144 .365 .424
.725 10160 4.373 3.758 2.623 2.220 .378 .439
.750 10511 4.524 3.888 2.713 2.297 .391 .455
.775 10861 4.675 4.017 2.804 2.373 .404 .470
.800 11211 4.825 4.147 2.894 2.450 .417 .485
____________________________________________________________________________
Crank Head Piston Piston Piston Volume Crank Rod-to- Rod-to-
Angle CFM @ CFM @ Depth Speed CC per Rotate Bore Crank
Degree 28 in. 28 in. inches Ft/Min degree TimeSec Angle Angle
0.0 0.0 0.0 0.0000 0.0 0.00 .00000 0.00 180.00
0.5 2.8 3.3 0.0001 95.3 0.01 .00001 0.16 179.34
1.0 5.6 6.6 0.0003 190.5 0.05 .00002 0.33 178.67
1.5 8.4 9.9 0.0008 285.7 0.12 .00003 0.49 178.01
2.0 11.2 13.1 0.0013 380.9 0.21 .00004 0.66 177.34
2.5 14.0 16.4 0.0021 476.0 0.33 .00004 0.82 176.68
3.0 16.7 19.7 0.0030 571.1 0.47 .00005 0.99 176.01
3.5 19.5 23.0 0.0041 666.1 0.65 .00006 1.15 175.35
4.0 22.3 26.3 0.0053 761.0 0.84 .00007 1.32 174.68
4.5 25.1 29.5 0.0068 855.8 1.07 .00008 1.48 174.02
5.0 27.9 32.8 0.0083 950.5 1.32 .00009 1.65 173.35
5.5 30.6 36.1 0.0101 1045.0 1.59 .00010 1.81 172.69
6.0 33.4 39.3 0.0120 1139.5 1.89 .00011 1.98 172.02
6.5 36.2 42.6 0.0141 1233.7 2.22 .00011 2.14 171.36
7.0 38.9 45.8 0.0163 1327.8 2.58 .00012 2.30 170.70
7.5 41.7 49.1 0.0188 1421.8 2.96 .00013 2.47 170.03
8.0 44.4 52.3 0.0213 1515.5 3.36 .00014 2.63 169.37
8.5 47.2 55.5 0.0241 1609.1 3.80 .00015 2.80 168.70
9.0 49.9 58.7 0.0270 1702.4 4.25 .00016 2.96 168.04
9.5 52.7 61.9 0.0301 1795.5 4.74 .00017 3.12 167.38
10.0 55.4 65.2 0.0333 1888.4 5.25 .00018 3.29 166.71
10.5 58.1 68.3 0.0367 1981.0 5.78 .00018 3.45 166.05
11.0 60.8 71.5 0.0402 2073.3 6.34 .00019 3.61 165.39
11.5 63.5 74.7 0.0440 2165.4 6.93 .00020 3.77 164.73
12.0 66.2 77.9 0.0478 2257.2 7.54 .00021 3.93 164.07
12.5 68.9 81.0 0.0519 2348.7 8.18 .00022 4.10 163.40
13.0 71.6 84.2 0.0561 2439.9 8.84 .00023 4.26 162.74
13.5 74.2 87.3 0.0604 2530.8 9.53 .00024 4.42 162.08
14.0 76.9 90.4 0.0650 2621.3 10.24 .00025 4.58 161.42
14.5 79.5 93.6 0.0697 2711.5 10.98 .00025 4.74 160.76
15.0 82.2 96.7 0.0745 2801.3 11.74 .00026 4.90 160.10
15.5 84.8 99.7 0.0795 2890.8 12.53 .00027 5.06 159.44
16.0 87.4 102.8 0.0846 2979.9 13.35 .00028 5.22 158.78
16.5 90.0 105.9 0.0900 3068.6 14.18 .00029 5.38 158.12
17.0 92.6 108.9 0.0954 3156.9 15.04 .00030 5.54 157.46
17.5 95.2 112.0 0.1010 3244.8 15.93 .00031 5.70 156.81
18.0 97.7 115.0 0.1068 3332.2 16.84 .00032 5.85 156.15
18.5 100.3 118.0 0.1128 3419.2 17.78 .00032 6.01 155.49
19.0 102.8 121.0 0.1188 3505.8 18.74 .00033 6.17 154.83
19.5 105.3 123.9 0.1251 3591.9 19.72 .00034 6.32 154.18
20.0 107.9 126.9 0.1315 3677.6 20.73 .00035 6.48 153.52
20.5 110.4 129.8 0.1380 3762.7 21.76 .00036 6.64 152.86
21.0 112.8 132.7 0.1447 3847.4 22.81 .00037 6.79 152.21
21.5 115.3 135.6 0.1515 3931.6 23.89 .00038 6.95 151.55
22.0 117.8 138.5 0.1585 4015.3 24.99 .00039 7.10 150.90
22.5 120.2 141.4 0.1656 4098.4 26.11 .00039 7.26 150.25
23.0 122.6 144.3 0.1729 4181.0 27.26 .00040 7.41 149.59
23.5 125.0 147.1 0.1803 4263.1 28.43 .00041 7.56 148.94
24.0 127.4 149.9 0.1879 4344.6 29.62 .00042 7.71 148.29
24.5 129.8 152.7 0.1956 4425.6 30.84 .00043 7.87 147.63
25.0 132.1 155.5 0.2035 4506.0 32.08 .00044 8.02 146.98
25.5 134.5 158.2 0.2115 4585.8 33.34 .00045 8.17 146.33
26.0 136.8 161.0 0.2196 4665.0 34.62 .00046 8.32 145.68
26.5 139.1 163.7 0.2279 4743.7 35.92 .00046 8.47 145.03
27.0 141.4 166.4 0.2363 4821.7 37.25 .00047 8.62 144.38
27.5 143.7 169.0 0.2448 4899.1 38.60 .00048 8.76 143.74
28.0 145.9 171.7 0.2535 4975.8 39.97 .00049 8.91 143.09
28.5 148.2 174.3 0.2623 5052.0 41.36 .00050 9.06 142.44
29.0 150.4 176.9 0.2713 5127.5 42.77 .00051 9.21 141.79
29.5 152.6 179.5 0.2804 5202.3 44.20 .00052 9.35 141.15
30.0 154.7 182.1 0.2896 5276.5 45.66 .00053 9.50 140.50
30.5 156.9 184.6 0.2989 5350.0 47.13 .00054 9.64 139.86
31.0 159.0 187.1 0.3084 5422.8 48.62 .00054 9.79 139.21
31.5 161.2 189.6 0.3180 5495.0 50.14 .00055 9.93 138.57
32.0 163.2 192.1 0.3278 5566.4 51.67 .00056 10.07 137.93
32.5 165.3 194.5 0.3376 5637.2 53.23 .00057 10.21 137.29
33.0 167.4 196.9 0.3476 5707.2 54.80 .00058 10.35 136.65
33.5 169.4 199.3 0.3577 5776.5 56.40 .00059 10.49 136.01
34.0 171.4 201.7 0.3680 5845.1 58.01 .00060 10.63 135.37
34.5 173.4 204.0 0.3783 5913.0 59.64 .00061 10.77 134.73
35.0 175.4 206.3 0.3888 5980.1 61.29 .00061 10.91 134.09
35.5 177.3 208.6 0.3994 6046.5 62.96 .00062 11.05 133.45
36.0 179.3 210.9 0.4101 6112.1 64.65 .00063 11.18 132.82
36.5 181.2 213.1 0.4209 6177.0 66.36 .00064 11.32 132.18
37.0 183.0 215.3 0.4318 6241.1 68.08 .00065 11.46 131.55
37.5 184.9 217.5 0.4429 6304.4 69.83 .00066 11.59 130.91
38.0 186.7 219.7 0.4541 6367.0 71.59 .00067 11.72 130.28
38.5 188.5 221.8 0.4653 6428.7 73.36 .00068 11.85 129.65
39.0 190.3 223.9 0.4767 6489.7 75.16 .00068 11.99 129.01
39.5 192.1 226.0 0.4882 6549.9 76.97 .00069 12.12 128.38
40.0 193.8 228.0 0.4998 6609.3 78.80 .00070 12.25 127.75
40.5 195.5 230.1 0.5115 6667.8 80.64 .00071 12.38 127.12
41.0 197.2 232.0 0.5233 6725.6 82.50 .00072 12.50 126.50
41.5 198.9 234.0 0.5352 6782.5 84.38 .00073 12.63 125.87
42.0 200.6 235.9 0.5472 6838.6 86.27 .00074 12.76 125.24
42.5 202.2 237.9 0.5593 6893.9 88.18 .00075 12.88 124.62
43.0 203.8 239.7 0.5715 6948.4 90.11 .00075 13.01 123.99
43.5 205.3 241.6 0.5838 7002.0 92.05 .00076 13.13 123.37
44.0 206.9 243.4 0.5962 7054.7 94.00 .00077 13.25 122.75
44.5 208.4 245.2 0.6087 7106.7 95.97 .00078 13.37 122.13
45.0 209.9 247.0 0.6213 7157.7 97.95 .00079 13.49 121.51
45.5 211.4 248.7 0.6340 7208.0 99.95 .00080 13.61 120.89
46.0 212.8 250.4 0.6467 7257.3 101.96 .00081 13.73 120.27
46.5 214.3 252.1 0.6596 7305.8 103.99 .00082 13.85 119.65
47.0 215.7 253.7 0.6725 7353.4 106.03 .00082 13.97 119.03
47.5 217.0 255.3 0.6855 7400.2 108.08 .00083 14.08 118.42
48.0 218.4 256.9 0.6986 7446.1 110.14 .00084 14.20 117.80
48.5 219.7 258.5 0.7118 7491.1 112.22 .00085 14.31 117.19
49.0 221.0 260.0 0.7251 7535.3 114.31 .00086 14.42 116.58
49.5 222.3 261.5 0.7384 7578.5 116.41 .00087 14.53 115.97
50.0 223.5 262.9 0.7518 7620.9 118.53 .00088 14.64 115.36
50.5 224.7 264.4 0.7653 7662.4 120.65 .00089 14.75 114.75
51.0 225.9 265.8 0.7788 7703.0 122.79 .00089 14.86 114.14
51.5 227.1 267.1 0.7925 7742.7 124.94 .00090 14.97 113.53
52.0 228.2 268.5 0.8062 7781.5 127.10 .00091 15.07 112.93
52.5 229.3 269.8 0.8199 7819.5 129.27 .00092 15.18 112.32
53.0 230.4 271.1 0.8338 7856.5 131.45 .00093 15.28 111.72
53.5 231.5 272.3 0.8477 7892.6 133.64 .00094 15.38 111.12
54.0 232.5 273.5 0.8616 7927.9 135.84 .00095 15.48 110.52
54.5 233.5 274.7 0.8757 7962.2 138.05 .00096 15.58 109.92
55.0 234.5 275.9 0.8897 7995.7 140.28 .00096 15.68 109.32
55.5 235.4 277.0 0.9039 8028.2 142.50 .00097 15.78 108.72
56.0 236.4 278.1 0.9181 8059.9 144.74 .00098 15.88 108.12
56.5 237.3 279.1 0.9323 8090.6 146.99 .00099 15.97 107.53
57.0 238.1 280.2 0.9467 8120.5 149.25 .00100 16.07 106.93
57.5 239.0 281.2 0.9610 8149.4 151.51 .00101 16.16 106.34
58.0 239.8 282.1 0.9754 8177.4 153.78 .00102 16.25 105.75
58.5 240.6 283.1 0.9899 8204.6 156.06 .00103 16.34 105.16
59.0 241.4 284.0 1.0044 8230.8 158.35 .00104 16.43 104.57
59.5 242.1 284.9 1.0189 8256.2 160.64 .00104 16.52 103.98
60.0 242.8 285.7 1.0335 8280.6 162.94 .00105 16.61 103.39
60.5 243.5 286.5 1.0482 8304.2 165.25 .00106 16.69 102.81
61.0 244.2 287.3 1.0629 8326.8 167.57 .00107 16.78 102.22
61.5 244.8 288.0 1.0776 8348.6 169.89 .00108 16.86 101.64
62.0 245.5 288.8 1.0923 8369.4 172.21 .00109 16.94 101.06
62.5 246.0 289.5 1.1071 8389.4 174.54 .00110 17.02 100.48
63.0 246.6 290.1 1.1219 8408.4 176.88 .00111 17.10 99.90
63.5 247.1 290.7 1.1368 8426.6 179.22 .00111 17.18 99.32
64.0 247.6 291.3 1.1517 8443.9 181.57 .00112 17.25 98.75
64.5 248.1 291.9 1.1666 8460.3 183.92 .00113 17.33 98.17
Crank Head Piston Piston Piston Volume Crank Rod-to- Rod-to-
Angle CFM @ CFM @ Depth Speed CC per Rotate Bore Crank
Degree 28 in. 28 in. inches Ft/Min degree TimeSec Angle Angle
65.0 248.6 292.4 1.1815 8475.8 186.28 .00114 17.40 97.60
65.1 248.7 292.5 1.1845 8478.8 186.75 .00114 17.42 97.48
65.2 248.7 292.6 1.1875 8481.8 187.22 .00114 17.43 97.37
65.3 248.8 292.7 1.1905 8484.7 187.69 .00115 17.45 97.25
65.4 248.9 292.8 1.1935 8487.6 188.17 .00115 17.46 97.14
65.5 249.0 292.9 1.1965 8490.5 188.64 .00115 17.47 97.03
65.6 249.1 293.0 1.1995 8493.3 189.11 .00115 17.49 96.91
65.7 249.2 293.1 1.2025 8496.1 189.58 .00115 17.50 96.80
65.8 249.2 293.2 1.2055 8498.8 190.06 .00115 17.52 96.68
65.9 249.3 293.3 1.2085 8501.5 190.53 .00116 17.53 96.57
66.0 249.4 293.4 1.2115 8504.2 191.00 .00116 17.55 96.45
66.1 249.5 293.5 1.2145 8506.9 191.48 .00116 17.56 96.34
66.2 249.6 293.6 1.2175 8509.5 191.95 .00116 17.57 96.23
66.3 249.6 293.7 1.2205 8512.1 192.42 .00116 17.59 96.11
66.4 249.7 293.8 1.2235 8514.6 192.90 .00116 17.60 96.00
66.5 249.8 293.9 1.2265 8517.1 193.37 .00117 17.62 95.88
66.6 249.9 293.9 1.2295 8519.6 193.84 .00117 17.63 95.77
66.7 249.9 294.0 1.2325 8522.0 194.32 .00117 17.64 95.66
66.8 250.0 294.1 1.2355 8524.4 194.79 .00117 17.66 95.54
66.9 250.1 294.2 1.2386 8526.8 195.27 .00117 17.67 95.43
67.0 250.1 294.3 1.2416 8529.1 195.74 .00118 17.68 95.32
67.1 250.2 294.4 1.2446 8531.4 196.22 .00118 17.70 95.20
67.2 250.3 294.4 1.2476 8533.7 196.69 .00118 17.71 95.09
67.3 250.3 294.5 1.2506 8535.9 197.17 .00118 17.72 94.98
67.4 250.4 294.6 1.2536 8538.1 197.64 .00118 17.74 94.86
67.5 250.5 294.7 1.2566 8540.2 198.12 .00118 17.75 94.75
67.6 250.5 294.7 1.2596 8542.4 198.59 .00119 17.76 94.64
67.7 250.6 294.8 1.2626 8544.4 199.07 .00119 17.78 94.52
67.8 250.6 294.9 1.2657 8546.5 199.54 .00119 17.79 94.41
67.9 250.7 294.9 1.2687 8548.5 200.02 .00119 17.80 94.30
68.0 250.8 295.0 1.2717 8550.5 200.49 .00119 17.82 94.18
68.1 250.8 295.1 1.2747 8552.4 200.97 .00119 17.83 94.07
68.2 250.9 295.1 1.2777 8554.4 201.44 .00120 17.84 93.96
68.3 250.9 295.2 1.2807 8556.2 201.92 .00120 17.86 93.84
68.4 251.0 295.3 1.2838 8558.1 202.40 .00120 17.87 93.73
68.5 251.0 295.3 1.2868 8559.9 202.87 .00120 17.88 93.62
68.6 251.1 295.4 1.2898 8561.7 203.35 .00120 17.89 93.51
68.7 251.1 295.5 1.2928 8563.4 203.82 .00121 17.91 93.39
68.8 251.2 295.5 1.2958 8565.1 204.30 .00121 17.92 93.28
68.9 251.2 295.6 1.2989 8566.8 204.78 .00121 17.93 93.17
69.0 251.3 295.6 1.3019 8568.4 205.25 .00121 17.94 93.06
69.1 251.3 295.7 1.3049 8570.0 205.73 .00121 17.96 92.94
69.2 251.4 295.7 1.3079 8571.6 206.21 .00121 17.97 92.83
69.3 251.4 295.8 1.3110 8573.1 206.68 .00122 17.98 92.72
69.4 251.5 295.8 1.3140 8574.6 207.16 .00122 17.99 92.61
69.5 251.5 295.9 1.3170 8576.1 207.64 .00122 18.01 92.49
69.6 251.6 295.9 1.3200 8577.5 208.11 .00122 18.02 92.38
69.7 251.6 296.0 1.3231 8578.9 208.59 .00122 18.03 92.27
69.8 251.6 296.0 1.3261 8580.3 209.07 .00122 18.04 92.16
69.9 251.7 296.1 1.3291 8581.6 209.55 .00123 18.05 92.05
70.0 251.7 296.1 1.3321 8582.9 210.02 .00123 18.07 91.93
70.1 251.7 296.2 1.3352 8584.2 210.50 .00123 18.08 91.82
70.2 251.8 296.2 1.3382 8585.4 210.98 .00123 18.09 91.71
70.3 251.8 296.3 1.3412 8586.6 211.45 .00123 18.10 91.60
70.4 251.9 296.3 1.3443 8587.8 211.93 .00124 18.11 91.49
70.5 251.9 296.3 1.3473 8588.9 212.41 .00124 18.12 91.38
70.6 251.9 296.4 1.3503 8590.0 212.89 .00124 18.14 91.26
70.7 251.9 296.4 1.3533 8591.0 213.36 .00124 18.15 91.15
70.8 252.0 296.4 1.3564 8592.1 213.84 .00124 18.16 91.04
70.9 252.0 296.5 1.3594 8593.0 214.32 .00124 18.17 90.93
71.0 252.0 296.5 1.3624 8594.0 214.80 .00125 18.18 90.82
71.1 252.1 296.5 1.3655 8594.9 215.28 .00125 18.19 90.71
71.2 252.1 296.6 1.3685 8595.8 215.75 .00125 18.20 90.60
71.3 252.1 296.6 1.3715 8596.7 216.23 .00125 18.21 90.49
71.4 252.1 296.6 1.3746 8597.5 216.71 .00125 18.23 90.37
71.5 252.2 296.7 1.3776 8598.3 217.19 .00125 18.24 90.26
71.6 252.2 296.7 1.3806 8599.0 217.67 .00126 18.25 90.15
71.7 252.2 296.7 1.3837 8599.7 218.14 .00126 18.26 90.04
71.8 252.2 296.7 1.3867 8600.4 218.62 .00126 18.27 89.93
71.9 252.2 296.8 1.3897 8601.1 219.10 .00126 18.28 89.82
72.0 252.3 296.8 1.3928 8601.7 219.58 .00126 18.29 89.71
72.1 252.3 296.8 1.3958 8602.3 220.06 .00126 18.30 89.60
72.2 252.3 296.8 1.3988 8602.8 220.53 .00127 18.31 89.49
72.3 252.3 296.8 1.4019 8603.4 221.01 .00127 18.32 89.38
72.4 252.3 296.9 1.4049 8603.8 221.49 .00127 18.33 89.27
72.5 252.3 296.9 1.4079 8604.3 221.97 .00127 18.34 89.16
Crank Head Piston Piston Piston Volume Crank Rod-to- Rod-to-
Angle CFM @ CFM @ Depth Speed CC per Rotate Bore Crank
Degree 28 in. 28 in. inches Ft/Min degree TimeSec Angle Angle
72.6 252.4 296.9 1.4110 8604.7 222.45 .00127 18.35 89.05
72.7 252.4 296.9 1.4140 8605.1 222.93 .00128 18.37 88.93
72.8 252.4 296.9 1.4170 8605.5 223.40 .00128 18.38 88.82
72.9 252.4 296.9 1.4201 8605.8 223.88 .00128 18.39 88.71
73.0 252.4 296.9 1.4231 8606.1 224.36 .00128 18.40 88.60
73.1 252.4 296.9 1.4261 8606.3 224.84 .00128 18.41 88.49
73.2 252.4 296.9 1.4292 8606.5 225.32 .00128 18.42 88.38
73.3 252.4 297.0 1.4322 8606.7 225.80 .00129 18.43 88.27
73.4 252.4 297.0 1.4352 8606.9 226.27 .00129 18.44 88.16
73.5 252.4 297.0 1.4383 8607.0 226.75 .00129 18.45 88.05
73.6 252.4 297.0 1.4413 8607.1 227.23 .00129 18.46 87.94
73.7 252.4 297.0 1.4443 8607.1 227.71 .00129 18.47 87.83
73.8 252.4 297.0 1.4474 8607.2 228.19 .00129 18.48 87.72
73.9 252.4 297.0 1.4504 8607.1 228.67 .00130 18.49 87.61
74.0 252.4 297.0 1.4534 8607.1 229.14 .00130 18.49 87.51
74.1 252.4 297.0 1.4565 8607.0 229.62 .00130 18.50 87.40
74.2 252.4 297.0 1.4595 8606.9 230.10 .00130 18.51 87.29
74.3 252.4 297.0 1.4625 8606.8 230.58 .00130 18.52 87.18
74.4 252.4 296.9 1.4656 8606.6 231.06 .00131 18.53 87.07
74.5 252.4 296.9 1.4686 8606.4 231.54 .00131 18.54 86.96
74.6 252.4 296.9 1.4716 8606.1 232.01 .00131 18.55 86.85
74.7 252.4 296.9 1.4747 8605.9 232.49 .00131 18.56 86.74
74.8 252.4 296.9 1.4777 8605.6 232.97 .00131 18.57 86.63
74.9 252.4 296.9 1.4807 8605.2 233.45 .00131 18.58 86.52
75.0 252.4 296.9 1.4838 8604.9 233.93 .00132 18.59 86.41
75.1 252.3 296.9 1.4868 8604.5 234.40 .00132 18.60 86.30
75.2 252.3 296.9 1.4898 8604.0 234.88 .00132 18.61 86.19
75.3 252.3 296.8 1.4929 8603.6 235.36 .00132 18.61 86.09
75.4 252.3 296.8 1.4959 8603.1 235.84 .00132 18.62 85.98
75.5 252.3 296.8 1.4989 8602.5 236.32 .00132 18.63 85.87
75.6 252.3 296.8 1.5020 8602.0 236.79 .00133 18.64 85.76
75.7 252.3 296.8 1.5050 8601.4 237.27 .00133 18.65 85.65
75.8 252.2 296.7 1.5080 8600.7 237.75 .00133 18.66 85.54
75.9 252.2 296.7 1.5110 8600.1 238.23 .00133 18.67 85.43
76.0 252.2 296.7 1.5141 8599.4 238.71 .00133 18.67 85.33
76.1 252.2 296.7 1.5171 8598.7 239.18 .00134 18.68 85.22
76.2 252.2 296.6 1.5201 8597.9 239.66 .00134 18.69 85.11
76.3 252.1 296.6 1.5232 8597.1 240.14 .00134 18.70 85.00
76.4 252.1 296.6 1.5262 8596.3 240.62 .00134 18.71 84.89
76.5 252.1 296.6 1.5292 8595.4 241.09 .00134 18.72 84.78
76.6 252.1 296.5 1.5322 8594.6 241.57 .00134 18.72 84.68
76.7 252.0 296.5 1.5353 8593.6 242.05 .00135 18.73 84.57
76.8 252.0 296.5 1.5383 8592.7 242.52 .00135 18.74 84.46
76.9 252.0 296.4 1.5413 8591.7 243.00 .00135 18.75 84.35
77.0 251.9 296.4 1.5444 8590.7 243.48 .00135 18.76 84.24
77.1 251.9 296.4 1.5474 8589.7 243.96 .00135 18.76 84.14
77.2 251.9 296.3 1.5504 8588.6 244.43 .00135 18.77 84.03
77.3 251.8 296.3 1.5534 8587.5 244.91 .00136 18.78 83.92
77.4 251.8 296.2 1.5565 8586.4 245.39 .00136 18.79 83.81
77.5 251.8 296.2 1.5595 8585.2 245.86 .00136 18.79 83.71
77.6 251.7 296.2 1.5625 8584.0 246.34 .00136 18.80 83.60
77.7 251.7 296.1 1.5655 8582.8 246.82 .00136 18.81 83.49
77.8 251.7 296.1 1.5685 8581.5 247.29 .00136 18.82 83.38
77.9 251.6 296.0 1.5716 8580.2 247.77 .00137 18.82 83.28
78.0 251.6 296.0 1.5746 8578.9 248.25 .00137 18.83 83.17
78.1 251.6 295.9 1.5776 8577.5 248.72 .00137 18.84 83.06
78.2 251.5 295.9 1.5806 8576.1 249.20 .00137 18.85 82.95
78.3 251.5 295.8 1.5836 8574.7 249.67 .00137 18.85 82.85
78.4 251.4 295.8 1.5867 8573.3 250.15 .00138 18.86 82.74
78.5 251.4 295.7 1.5897 8571.8 250.63 .00138 18.87 82.63
78.6 251.3 295.7 1.5927 8570.3 251.10 .00138 18.87 82.53
78.7 251.3 295.6 1.5957 8568.7 251.58 .00138 18.88 82.42
78.8 251.2 295.6 1.5987 8567.2 252.05 .00138 18.89 82.31
78.9 251.2 295.5 1.6018 8565.6 252.53 .00138 18.89 82.21
79.0 251.2 295.5 1.6048 8563.9 253.00 .00139 18.90 82.10
79.1 251.1 295.4 1.6078 8562.3 253.48 .00139 18.91 81.99
79.2 251.1 295.4 1.6108 8560.6 253.95 .00139 18.91 81.89
79.3 251.0 295.3 1.6138 8558.8 254.43 .00139 18.92 81.78
79.4 251.0 295.2 1.6168 8557.1 254.90 .00139 18.93 81.67
79.5 250.9 295.2 1.6198 8555.3 255.38 .00139 18.93 81.57
79.6 250.8 295.1 1.6228 8553.5 255.85 .00140 18.94 81.46
79.7 250.8 295.1 1.6259 8551.6 256.33 .00140 18.95 81.35
79.8 250.7 295.0 1.6289 8549.7 256.80 .00140 18.95 81.25
79.9 250.7 294.9 1.6319 8547.8 257.28 .00140 18.96 81.14
80.0 250.6 294.9 1.6349 8545.9 257.75 .00140 18.96 81.04
Crank Head Piston Piston Piston Volume Crank Rod-to- Rod-to-
Angle CFM @ CFM @ Depth Speed CC per Rotate Bore Crank
Degree 28 in. 28 in. inches Ft/Min degree TimeSec Angle Angle
80.5 250.3 294.5 1.6499 8535.7 260.12 .00141 18.99 80.51
81.0 250.0 294.1 1.6649 8524.8 262.49 .00142 19.02 79.98
81.5 249.7 293.7 1.6799 8513.2 264.85 .00143 19.05 79.45
82.0 249.3 293.3 1.6949 8500.8 267.21 .00144 19.07 78.93
82.5 248.9 292.8 1.7098 8487.7 269.57 .00145 19.10 78.40
83.0 248.5 292.4 1.7247 8473.9 271.92 .00146 19.12 77.88
83.5 248.1 291.9 1.7396 8459.3 274.26 .00146 19.14 77.36
84.0 247.6 291.3 1.7545 8444.0 276.61 .00147 19.16 76.84
84.5 247.2 290.8 1.7693 8428.0 278.94 .00148 19.18 76.32
85.0 246.7 290.2 1.7841 8411.3 281.28 .00149 19.19 75.81
85.5 246.2 289.6 1.7989 8394.0 283.60 .00150 19.21 75.29
86.0 245.6 289.0 1.8136 8375.9 285.93 .00151 19.22 74.78
86.5 245.1 288.3 1.8283 8357.1 288.24 .00152 19.23 74.27
87.0 244.5 287.7 1.8430 8337.7 290.56 .00153 19.24 73.76
87.5 243.9 287.0 1.8576 8317.6 292.86 .00154 19.25 73.25
88.0 243.3 286.3 1.8722 8296.9 295.16 .00154 19.26 72.74
88.5 242.7 285.5 1.8867 8275.5 297.45 .00155 19.26 72.24
89.0 242.0 284.8 1.9012 8253.4 299.74 .00156 19.27 71.73
89.5 241.4 284.0 1.9157 8230.7 302.02 .00157 19.27 71.23
90.0 240.7 283.2 1.9301 8207.4 304.29 .00158 19.27 70.73
90.5 240.0 282.3 1.9445 8183.5 306.56 .00159 19.27 70.23
91.0 239.3 281.5 1.9588 8158.9 308.82 .00160 19.27 69.73
91.5 238.5 280.6 1.9731 8133.7 311.07 .00161 19.26 69.24
92.0 237.8 279.7 1.9873 8107.9 313.32 .00161 19.26 68.74
92.5 237.0 278.8 2.0015 8081.6 315.55 .00162 19.25 68.25
93.0 236.2 277.9 2.0157 8054.6 317.78 .00163 19.24 67.76
93.5 235.4 277.0 2.0298 8027.1 320.01 .00164 19.23 67.27
94.0 234.6 276.0 2.0438 7998.9 322.22 .00165 19.22 66.78
94.5 233.7 275.0 2.0578 7970.3 324.42 .00166 19.21 66.29
95.0 232.9 274.0 2.0717 7941.0 326.62 .00167 19.19 65.81
95.5 232.0 273.0 2.0856 7911.2 328.81 .00168 19.18 65.32
96.0 231.1 271.9 2.0994 7880.9 330.99 .00168 19.16 64.84
96.5 230.2 270.8 2.1132 7850.0 333.16 .00169 19.14 64.36
97.0 229.3 269.8 2.1269 7818.6 335.32 .00170 19.12 63.88
97.5 228.4 268.7 2.1406 7786.7 337.47 .00171 19.10 63.40
98.0 227.4 267.5 2.1541 7754.3 339.62 .00172 19.07 62.93
98.5 226.4 266.4 2.1677 7721.3 341.75 .00173 19.05 62.45
99.0 225.5 265.3 2.1812 7687.9 343.88 .00174 19.02 61.98
99.5 224.5 264.1 2.1946 7654.0 345.99 .00175 18.99 61.51
100.0 223.5 262.9 2.2079 7619.6 348.10 .00175 18.96 61.04
100.5 222.4 261.7 2.2212 7584.7 350.19 .00176 18.93 60.57
101.0 221.4 260.5 2.2344 7549.3 352.28 .00177 18.90 60.10
101.5 220.3 259.2 2.2476 7513.5 354.35 .00178 18.87 59.63
102.0 219.3 258.0 2.2607 7477.2 356.42 .00179 18.83 59.17
102.5 218.2 256.7 2.2737 7440.5 358.47 .00180 18.79 58.71
103.0 217.1 255.4 2.2867 7403.4 360.51 .00181 18.76 58.24
103.5 216.0 254.1 2.2996 7365.8 362.55 .00182 18.72 57.78
104.0 214.9 252.8 2.3124 7327.8 364.57 .00182 18.67 57.33
104.5 213.8 251.5 2.3252 7289.4 366.58 .00183 18.63 56.87
105.0 212.6 250.2 2.3379 7250.6 368.58 .00184 18.59 56.41
105.5 211.5 248.8 2.3505 7211.4 370.57 .00185 18.54 55.96
106.0 210.3 247.4 2.3630 7171.8 372.55 .00186 18.49 55.51
106.5 209.2 246.1 2.3755 7131.9 374.52 .00187 18.45 55.05
107.0 208.0 244.7 2.3879 7091.5 376.47 .00188 18.40 54.60
107.5 206.8 243.3 2.4003 7050.8 378.42 .00189 18.34 54.16
108.0 205.6 241.9 2.4125 7009.7 380.35 .00189 18.29 53.71
108.5 204.4 240.4 2.4247 6968.3 382.27 .00190 18.24 53.26
109.0 203.1 239.0 2.4368 6926.5 384.18 .00191 18.18 52.82
109.5 201.9 237.5 2.4488 6884.4 386.08 .00192 18.12 52.38
110.0 200.7 236.1 2.4608 6842.0 387.97 .00193 18.07 51.93
110.5 199.4 234.6 2.4727 6799.2 389.84 .00194 18.01 51.49
111.0 198.1 233.1 2.4845 6756.1 391.70 .00195 17.94 51.06
111.5 196.9 231.6 2.4962 6712.7 393.55 .00196 17.88 50.62
112.0 195.6 230.1 2.5079 6669.1 395.39 .00196 17.82 50.18
112.5 194.3 228.6 2.5195 6625.1 397.21 .00197 17.75 49.75
113.0 193.0 227.1 2.5310 6580.8 399.03 .00198 17.68 49.32
113.5 191.7 225.5 2.5424 6536.3 400.83 .00199 17.62 48.88
114.0 190.4 224.0 2.5537 6491.5 402.62 .00200 17.55 48.45
114.5 189.1 222.4 2.5650 6446.4 404.39 .00201 17.47 48.03
115.0 187.7 220.9 2.5762 6401.0 406.15 .00202 17.40 47.60
115.5 186.4 219.3 2.5873 6355.5 407.90 .00203 17.33 47.17
116.0 185.0 217.7 2.5983 6309.6 409.64 .00204 17.25 46.75
116.5 183.7 216.1 2.6092 6263.6 411.37 .00204 17.18 46.32
117.0 182.3 214.5 2.6201 6217.3 413.08 .00205 17.10 45.90
117.5 181.0 212.9 2.6309 6170.7 414.78 .00206 17.02 45.48
118.0 179.6 211.3 2.6416 6124.0 416.46 .00207 16.94 45.06
118.5 178.2 209.7 2.6522 6077.1 418.14 .00208 16.86 44.64
119.0 176.8 208.0 2.6627 6029.9 419.80 .00209 16.78 44.22
119.5 175.5 206.4 2.6732 5982.6 421.45 .00210 16.69 43.81
120.0 174.1 204.8 2.6835 5935.0 423.08 .00211 16.61 43.39
120.5 172.7 203.1 2.6938 5887.3 424.70 .00211 16.52 42.98
121.0 171.3 201.5 2.7040 5839.4 426.31 .00212 16.43 42.57
121.5 169.8 199.8 2.7141 5791.3 427.90 .00213 16.34 42.16
122.0 168.4 198.2 2.7242 5743.1 429.48 .00214 16.25 41.75
122.5 167.0 196.5 2.7341 5694.7 431.05 .00215 16.16 41.34
123.0 165.6 194.8 2.7440 5646.2 432.61 .00216 16.07 40.93
123.5 164.2 193.1 2.7537 5597.5 434.15 .00217 15.97 40.53
124.0 162.7 191.4 2.7634 5548.6 435.67 .00218 15.88 40.12
124.5 161.3 189.8 2.7730 5499.7 437.19 .00218 15.78 39.72
125.0 159.8 188.1 2.7825 5450.6 438.69 .00219 15.68 39.32
125.5 158.4 186.4 2.7920 5401.3 440.18 .00220 15.58 38.92
126.0 157.0 184.7 2.8013 5352.0 441.65 .00221 15.48 38.52
126.5 155.5 183.0 2.8106 5302.5 443.11 .00222 15.38 38.12
127.0 154.1 181.2 2.8198 5253.0 444.56 .00223 15.28 37.72
127.5 152.6 179.5 2.8289 5203.3 445.99 .00224 15.18 37.32
128.0 151.1 177.8 2.8379 5153.5 447.41 .00225 15.07 36.93
128.5 149.7 176.1 2.8468 5103.7 448.82 .00225 14.97 36.53
129.0 148.2 174.4 2.8556 5053.7 450.21 .00226 14.86 36.14
129.5 146.7 172.6 2.8643 5003.7 451.59 .00227 14.75 35.75
130.0 145.3 170.9 2.8730 4953.6 452.95 .00228 14.64 35.36
130.5 143.8 169.2 2.8816 4903.4 454.30 .00229 14.53 34.97
131.0 142.3 167.4 2.8901 4853.2 455.64 .00230 14.42 34.58
131.5 140.9 165.7 2.8984 4802.9 456.96 .00231 14.31 34.19
132.0 139.4 164.0 2.9068 4752.5 458.27 .00232 14.20 33.80
132.5 137.9 162.2 2.9150 4702.1 459.57 .00232 14.08 33.42
133.0 136.4 160.5 2.9231 4651.6 460.85 .00233 13.97 33.03
133.5 134.9 158.7 2.9311 4601.1 462.12 .00234 13.85 32.65
134.0 133.5 157.0 2.9391 4550.5 463.37 .00235 13.73 32.27
134.5 132.0 155.3 2.9470 4499.9 464.61 .00236 13.61 31.89
135.0 130.5 153.5 2.9548 4449.3 465.84 .00237 13.49 31.51
135.5 129.0 151.8 2.9625 4398.6 467.05 .00238 13.37 31.13
136.0 127.5 150.0 2.9701 4347.9 468.25 .00239 13.25 30.75
136.5 126.0 148.3 2.9776 4297.2 469.44 .00239 13.13 30.37
137.0 124.5 146.5 2.9850 4246.5 470.61 .00240 13.01 29.99
137.5 123.0 144.8 2.9924 4195.8 471.77 .00241 12.88 29.62
138.0 121.6 143.0 2.9996 4145.0 472.91 .00242 12.76 29.24
138.5 120.1 141.3 3.0068 4094.3 474.04 .00243 12.63 28.87
139.0 118.6 139.5 3.0139 4043.5 475.16 .00244 12.50 28.50
139.5 117.1 137.8 3.0209 3992.7 476.26 .00245 12.38 28.12
140.0 115.6 136.0 3.0278 3942.0 477.35 .00246 12.25 27.75
140.5 114.1 134.3 3.0346 3891.2 478.42 .00246 12.12 27.38
141.0 112.6 132.5 3.0413 3840.5 479.48 .00247 11.99 27.01
141.5 111.1 130.8 3.0479 3789.7 480.53 .00248 11.85 26.65
142.0 109.7 129.0 3.0545 3739.0 481.56 .00249 11.72 26.28
142.5 108.2 127.3 3.0610 3688.3 482.58 .00250 11.59 25.91
143.0 106.7 125.5 3.0673 3637.6 483.59 .00251 11.46 25.54
143.5 105.2 123.8 3.0736 3586.9 484.58 .00252 11.32 25.18
144.0 103.7 122.0 3.0798 3536.3 485.56 .00253 11.18 24.82
144.5 102.2 120.3 3.0860 3485.6 486.52 .00254 11.05 24.45
145.0 100.7 118.5 3.0920 3435.0 487.47 .00254 10.91 24.09
145.5 99.3 116.8 3.0979 3384.5 488.41 .00255 10.77 23.73
146.0 97.8 115.0 3.1038 3333.9 489.33 .00256 10.63 23.37
146.5 96.3 113.3 3.1095 3283.4 490.24 .00257 10.49 23.01
147.0 94.8 111.5 3.1152 3232.9 491.14 .00258 10.35 22.65
147.5 93.3 109.8 3.1208 3182.5 492.02 .00259 10.21 22.29
148.0 91.9 108.1 3.1263 3132.1 492.89 .00260 10.07 21.93
148.5 90.4 106.3 3.1317 3081.7 493.74 .00261 9.93 21.57
149.0 88.9 104.6 3.1371 3031.4 494.58 .00261 9.79 21.21
149.5 87.4 102.9 3.1423 2981.1 495.41 .00262 9.64 20.86
150.0 86.0 101.1 3.1475 2930.9 496.22 .00263 9.50 20.50
150.5 84.5 99.4 3.1525 2880.7 497.02 .00264 9.35 20.15
151.0 83.0 97.7 3.1575 2830.6 497.81 .00265 9.21 19.79
151.5 81.5 95.9 3.1624 2780.5 498.58 .00266 9.06 19.44
152.0 80.1 94.2 3.1672 2730.4 499.34 .00267 8.91 19.09
152.5 78.6 92.5 3.1720 2680.4 500.08 .00268 8.76 18.74
153.0 77.1 90.8 3.1766 2630.5 500.81 .00268 8.62 18.38
153.5 75.7 89.0 3.1811 2580.6 501.53 .00269 8.47 18.03
154.0 74.2 87.3 3.1856 2530.8 502.23 .00270 8.32 17.68
154.5 72.8 85.6 3.1900 2481.0 502.92 .00271 8.17 17.33
155.0 71.3 83.9 3.1943 2431.2 503.60 .00272 8.02 16.98
155.5 69.8 82.2 3.1985 2381.5 504.26 .00273 7.87 16.63
156.0 68.4 80.5 3.2026 2331.9 504.91 .00274 7.71 16.29
156.5 66.9 78.7 3.2066 2282.3 505.55 .00275 7.56 15.94
157.0 65.5 77.0 3.2106 2232.7 506.17 .00275 7.41 15.59
157.5 64.0 75.3 3.2144 2183.3 506.78 .00276 7.26 15.25
158.0 62.6 73.6 3.2182 2133.8 507.37 .00277 7.10 14.90
158.5 61.1 71.9 3.2219 2084.4 507.96 .00278 6.95 14.55
159.0 59.7 70.2 3.2255 2035.1 508.52 .00279 6.79 14.21
159.5 58.2 68.5 3.2290 1985.8 509.08 .00280 6.64 13.86
160.0 56.8 66.8 3.2324 1936.6 509.62 .00281 6.48 13.52
160.5 55.4 65.1 3.2358 1887.5 510.15 .00282 6.32 13.18
161.0 53.9 63.4 3.2390 1838.3 510.66 .00282 6.17 12.83
161.5 52.5 61.7 3.2422 1789.3 511.16 .00283 6.01 12.49
162.0 51.0 60.0 3.2453 1740.2 511.65 .00284 5.85 12.15
162.5 49.6 58.4 3.2483 1691.3 512.12 .00285 5.70 11.81
163.0 48.2 56.7 3.2512 1642.3 512.58 .00286 5.54 11.46
163.5 46.7 55.0 3.2541 1593.5 513.03 .00287 5.38 11.12
164.0 45.3 53.3 3.2568 1544.6 513.46 .00288 5.22 10.78
164.5 43.9 51.6 3.2595 1495.9 513.88 .00289 5.06 10.44
165.0 42.4 49.9 3.2620 1447.1 514.29 .00289 4.90 10.10
165.5 41.0 48.2 3.2645 1398.4 514.68 .00290 4.74 9.76
166.0 39.6 46.6 3.2669 1349.8 515.06 .00291 4.58 9.42
166.5 38.2 44.9 3.2693 1301.2 515.42 .00292 4.42 9.08
167.0 36.7 43.2 3.2715 1252.6 515.78 .00293 4.26 8.74
167.5 35.3 41.5 3.2737 1204.1 516.12 .00294 4.10 8.40
168.0 33.9 39.9 3.2757 1155.6 516.44 .00295 3.93 8.07
168.5 32.5 38.2 3.2777 1107.2 516.76 .00296 3.77 7.73
169.0 31.0 36.5 3.2796 1058.7 517.05 .00296 3.61 7.39
169.5 29.6 34.9 3.2814 1010.4 517.34 .00297 3.45 7.05
170.0 28.2 33.2 3.2831 962.0 517.61 .00298 3.29 6.71
170.5 26.8 31.5 3.2848 913.7 517.87 .00299 3.12 6.38
171.0 25.4 29.9 3.2864 865.4 518.12 .00300 2.96 6.04
171.5 24.0 28.2 3.2878 817.2 518.35 .00301 2.80 5.70
172.0 22.6 26.5 3.2892 769.0 518.57 .00302 2.63 5.37
172.5 21.1 24.9 3.2905 720.8 518.78 .00303 2.47 5.03
173.0 19.7 23.2 3.2917 672.6 518.97 .00304 2.30 4.70
173.5 18.3 21.5 3.2929 624.5 519.15 .00304 2.14 4.36
174.0 16.9 19.9 3.2939 576.4 519.31 .00305 1.98 4.02
174.5 15.5 18.2 3.2949 528.2 519.47 .00306 1.81 3.69
175.0 14.1 16.6 3.2958 480.2 519.61 .00307 1.65 3.35
175.5 12.7 14.9 3.2966 432.1 519.73 .00308 1.48 3.02
176.0 11.3 13.3 3.2973 384.0 519.85 .00309 1.32 2.68
176.5 9.9 11.6 3.2979 336.0 519.94 .00310 1.15 2.35
177.0 8.4 9.9 3.2985 288.0 520.03 .00311 0.99 2.01
177.5 7.0 8.3 3.2989 240.0 520.10 .00311 0.82 1.68
178.0 5.6 6.6 3.2993 192.0 520.16 .00312 0.66 1.34
178.5 4.2 5.0 3.2996 144.0 520.21 .00313 0.49 1.01
179.0 2.8 3.3 3.2998 96.0 520.24 .00314 0.33 0.67
179.5 1.4 1.7 3.3000 48.0 520.26 .00315 0.16 0.34
180.0 0.0 0.0 3.3000 0.0 520.27 .00316 0.00 0.00
first off,
thank you very much,
havent had the time to go through the simulation numbers but will later.
As allways great info larry, thank you.
Yes it is a hemi, but will definitely get changed to double squish on both sides, without hurting flow to much.
I plan on changing the valve angle on the intake, in order to put a bigger valve in, if thats what you meant!
Flownumbers are unfortunately only for intake as the exhaust is somewhat difficult to test on my bench, right now, but i assume that the complete intake wont get much worse with carb, since the manifold is totally straight and smoothbore. whereas the port has a 85°turn in it at the throat, what makes the shortside kind of low, about 0.5" vert. trhoat,1" total to floor from seat.
Yes i see that flow could be a lil worse in real life.
Compression is now about 10.5:1 with reworked pistons(ported, thnx bill), and gapless rings, but could be perhaps raised to 12:1 with squish on 99 oct(european), otherwise im limited since its aircooled.
It just made me wonder that the port will level out at about 0.6" whereas my cam only has about 0.52 lift.
Cams: no unfortunately they can not be had easily with changed Spread.
besides that the radical timing one has about 107.
thanks a lot
christian
thank you very much,
havent had the time to go through the simulation numbers but will later.
As allways great info larry, thank you.
Yes it is a hemi, but will definitely get changed to double squish on both sides, without hurting flow to much.
I plan on changing the valve angle on the intake, in order to put a bigger valve in, if thats what you meant!
Flownumbers are unfortunately only for intake as the exhaust is somewhat difficult to test on my bench, right now, but i assume that the complete intake wont get much worse with carb, since the manifold is totally straight and smoothbore. whereas the port has a 85°turn in it at the throat, what makes the shortside kind of low, about 0.5" vert. trhoat,1" total to floor from seat.
Yes i see that flow could be a lil worse in real life.
Compression is now about 10.5:1 with reworked pistons(ported, thnx bill), and gapless rings, but could be perhaps raised to 12:1 with squish on 99 oct(european), otherwise im limited since its aircooled.
It just made me wonder that the port will level out at about 0.6" whereas my cam only has about 0.52 lift.
Cams: no unfortunately they can not be had easily with changed Spread.
besides that the radical timing one has about 107.
thanks a lot
christian
There is always advancement to be made.