Another "How much will it make?" Project "Special Needs"

[randy331]

I'm not trying to ignore you, Randy. I'm in the thick of some health issues and I don't know if I'm afoot or horseback right now.

I hope it's not too serious and your health improves.

Randy

[GARY C]

But what about "optimizing" the overlap period, opening the valve sooner relative to piston demand and basically focusing more on the first half of the stroke rather than the last half.

How would one go about deciding overlap was, or wasn't optimized ?
And how would one go about deciding the first half of the stroke needed more/less focus vs the second half.

I mean other than just trying more camZ that have more/less overlap, or more lift/time/area in the first half and less in the second half and looking at results, what do you look at to decide one of these isn't already optimum??

Randy

No opinion?, ok, let me rephrase the question.

SN liked the cam in at 110* ICL for best average and peak power.
It made more below about 4500 or so with the cam in at 106* ICL.

With the cam in at 110* ICL the actual valve window area at TDC is .415" csa for intake and .576" csa for ex.
With the cam in at 106* ICL the actual valve window area at TDC is .507" csa for intake and .494" csa for ex.
These window areas are actual window CSA taking into account the seat angles used.

What does SN like about the 110* ICL?
Does SN need more window area @ TDC overlap?
Would you open the in valve earlier to add window area @ TDC?
Close the ex valve later to add window area @ TDC?
What would you change/move to give SN the best of both the 106* ICL power curve and the 110* ICL power curve?

Randy

Can I use my WikiLeaks info to dispute this? I am looking at the tests dated 8-31-2016, column I,L and P.

[CGT]

Project "Special Needs" will be returning to the dyno farely soon!

[RevTheory]

You're such a tease

[randy331]

Project "Special Needs" will be returning to the dyno farely soon!

I been putting together the ( Special Needs bonzi pull package ).

Randy

[wyrmrider]

Special Needs bonzi pull package
dwarfed plants?
Reminds me of the famous WWII Japanese gardeners suicide squad
They made their final charge yelling bonzi, bonzi
glad to see the thread come alive again

[GARY C]

Project "Special Needs" will be returning to the dyno farely soon!

I been putting together the ( Special Needs bonzi pull package ).

Randy

I hope this means a 300 shot of nitrous with video.

[CGT]

Project "Special Needs" will be returning to the dyno farely soon!

I been putting together the ( Special Needs bonzi pull package ).

Randy

I hope this means a 300 shot of nitrous with video.

An extra 10 hp and 10 ft/lbs in the same rpm range doesn't excite you? That's the goal.

[wyrmrider]

Many times I would have killed for 10 hp

[randy331]

I want to make 550hp and 490ftlbs.

WOW looks like you exceeded your goal first shot.Also hangs in until 7000 w a hr.

An extra 10 hp and 10 ft/lbs in the same rpm range doesn't excite you? That's the goal.

Always nice to do heads/intakes for people that are easy to please.

Never get them calls lookin for that little bit better set of heads with just 10 more pounds of TQ and 10 more HP in them.

Randy

[CGT]

Bonzai.jpg

Are their only 2 components to the bonzai package?

Maybe some would be interested to hear the details of the new cylinder heads.....vs the previous ones etc.

.

[RevTheory]

Of course there are. What are the flowz?

[Carnut1]

I would with details and pictures! Thanks, Charlie

[randy331]

Maybe I should ask,.... what should the size / valve sizes / seat angles / flowZ be for the new SN heads ?

I mean if someone calls you and says here's what my engine makes now but I want better heads. I want no less power at 3000 rpm, and I want 10 more pounds at 5300-5400 and 10 more HP up at 6700-7000 area, what would you do differently ? How do you gain everywhere ?

I mean if it made 300 lbs at 3000 rpm 400 LBs at 5400 rpm and 450 HP at 6500 it would be a much easier task.

Randy

[Rick360]

Maybe I should ask,.... what should the size / valve sizes / seat angles / flowZ be for the new SN heads ?

Randy

Whatever gives it the most Port Energy!!!

Rick