***Post Pics of what you are working on**

General engine tech -- Drag Racing to Circle Track

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HREperformance
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Re: ***Post Pics of what you are working on**

Post by HREperformance » Wed Oct 04, 2017 3:01 am

W7’s for big cube sbm
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Carnut1
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Re: ***Post Pics of what you are working on**

Post by Carnut1 » Wed Oct 04, 2017 6:01 am

Nice burr work. Did you change the factory shape much? Thanks, Charlie
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Re: ***Post Pics of what you are working on**

Post by williamsmotowerx » Wed Oct 04, 2017 11:28 am

CSA's aren't changed too much. A lot of clean up contour work.

Funny in the burr finish, I've been doing that for 20 years. I see it's in vogue now here on Speedtalk.

Pretty much everything I've seen on here is what I've found too. Little less flowbench CFM, little more dyno HP.
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Re: ***Post Pics of what you are working on**

Post by Carnut1 » Wed Oct 04, 2017 12:02 pm

So you know the improvement in power production a burr finish has over a polished finish. Love the cnc work on valves, I am interested in improvements from those mods. Thanks, Charlie
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MTENGINES
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Re: ***Post Pics of what you are working on**

Post by MTENGINES » Thu Oct 05, 2017 7:45 pm

Looks like we have some cool projects in here. Keep it up guys.

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Re: ***Post Pics of what you are working on**

Post by swampbuggy » Sun Oct 08, 2017 1:06 am

MTENGINES, we had talked about me modifying my 2958 intake manifold to improve it. After the second phase (round) of modifications we flowed it on the cylinder head today for the second time. I was tickled to death with the results. Will post pictures and numbers soon to share what we did. Thanks Mark.

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Re: ***Post Pics of what you are working on**

Post by David Vizard » Sun Oct 08, 2017 10:00 am

MTENGINES wrote:
Tue Sep 26, 2017 6:15 pm
hogging on some heads
MT,

Looks like you have your burr finishes well under control. That's really good work. I am still having problems getting the finish like this and as Charlie does.
DV
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Re: ***Post Pics of what you are working on**

Post by David Vizard » Sun Oct 08, 2017 10:03 am

CGT wrote:
Tue Sep 26, 2017 7:38 pm
Resized_20170917_133318.jpegResized_20170910_162515.jpegResized_20170905_195925.jpegResized_20170903_164854.jpeg
CGT that paint job looks fit for a front cover. Was anything special done???
DV
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Re: ***Post Pics of what you are working on**

Post by David Vizard » Sun Oct 08, 2017 10:12 am

mag2555 wrote:
Mon Oct 02, 2017 8:09 am
Well back to making up for my week day spent on my two Heathkit amps last week.
Spent 3/4s of Sunday on a master Intake port in these iron W2 Mopar heads.

Stock flow with 2.05"
.100"----.200"----.300"----.400"----.450"----.500"----.550"-----.600"
48.4------103.3---154-----195------207.5----219.9---226.7----249.7

Ported with 2.08" w 30 back cut.
75.4-----153.6----220.9----273.5---290.4---292.6---299.2----302.4

On now to the Exh side!
Mag,
Ran your intake flow numbers through my flow program. They are very strong in the low and midrange in terms of CD and the top numbers very creditable.

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Re: ***Post Pics of what you are working on**

Post by David Vizard » Sun Oct 08, 2017 10:20 am

williamsmotowerx wrote:
Wed Oct 04, 2017 11:28 am
CSA's aren't changed too much. A lot of clean up contour work.

Funny in the burr finish, I've been doing that for 20 years. I see it's in vogue now here on Speedtalk.

Pretty much everything I've seen on here is what I've found too. Little less flowbench CFM, little more dyno HP.
I am really interested in the dimpled valve finish. Could I get some details here as to how the engine responded to this move??

thanks,
DV
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Re: ***Post Pics of what you are working on**

Post by RevTheory » Sun Oct 08, 2017 10:22 am

David Vizard wrote:
Sun Oct 08, 2017 10:00 am
MTENGINES wrote:
Tue Sep 26, 2017 6:15 pm
hogging on some heads
MT,

Looks like you have your burr finishes well under control. That's really good work. I am still having problems getting the finish like this and as Charlie does.
DV
Charlie has a really good "grip" on the burr deal. I see the method to his madness and I like it.

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Re: ***Post Pics of what you are working on**

Post by Carnut1 » Sun Oct 08, 2017 10:59 am

0916172028d.jpg
0916172029c_HDR.jpg
Not finished shots of 247 cc Dart bowl. Roughed out with ancient single cut oval burr 1/2 " dia. that was 6" got bent and is now 4" shaft. Rpm makes the difference and grinder torque. Slow and lots of torque make it happen. I also cannot come close to this with an air grinder. Hope this helps and thanks for the kind words. Charlie
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Re: ***Post Pics of what you are working on**

Post by David Vizard » Sun Oct 08, 2017 11:15 am

Charlie,

I am about to invest in some new die grinders.Can you tell me exactly what you are using please??

Also if I szend them down to you can you train them so they produce the same results as you do???????????????????????????????????

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Re: ***Post Pics of what you are working on**

Post by Carnut1 » Sun Oct 08, 2017 12:03 pm

Screenshot_2017-10-08-11-52-38.png
David, I know you have a full sized electric die grinder. I would make up a cheap speed controller from a heavy duty dimmer or rheostat check wattages and go from there. Should cost $20- $25 max. If you want a grinder that lasts buy the big Dewalt in the picture. Expensive and heavy but nice torque and very durable. The trained die grinders are programmable cnc centers and for sure are on my wish list! I have had zero luck training my grinders, they keep making holes!
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Re: ***Post Pics of what you are working on**

Post by PRH » Sun Oct 08, 2017 12:11 pm

Obviously, it's just a matter of what you're used to using..... But I can't imagine trying to port heads with a monster sized grinder like most of the electric ones are.

Mini air grinders for me.
Somewhat handy with a die grinder.

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