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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: exilous on May 04, 2009, 10:40:51 pm

Title: What do you guys think about this article?
Post by: exilous on May 04, 2009, 10:40:51 pm

http://pesn.com/2005/10/13/9600187_Design_to_Improve_Turbulence_in_Combustion_Chambers/

I came across this today while i was reading up on combustion chamber sizes and all that good stuff.  Just wanted to see what you all think about it. Might be worth a try on a set of old crappy heads or something.

Title: Re: What do you guys think about this article?
Post by: eventhorizon66 on May 04, 2009, 10:57:00 pm

Very interesting.  I'd need a little more information before I followed this guys advice, though.  Maybe if you wanted to mess around with a junk 350 and a set of 882 heads, but you'd never catch me cutting grooves in a pair of dart heads.

Title: Re: What do you guys think about this article?
Post by: exilous on May 05, 2009, 11:38:06 am

I was actually thinking about it myself since i have a few crappy sets of heads and engines floating around i wouldnt mind trying it...worst that could happen is i screw up the heads and have to junk them...it makes for a good excuse to buy better heads...HAHAH

Title: Re: What do you guys think about this article?
Post by: HAULIN IT on May 05, 2009, 12:08:45 pm

I saw that a while ago, interesting to say the least & due to seeing carbon wash patterns, ect. on pistons...I believe there are things going on in there that you can't exactly see, however I'm in the same boat. I would be thinking after a set were run a while & dropped off at the machine shop..."That's odd, You say my heads are cracked? Where?"  Lorne
Here's another picture I put in my file to remind me to follow up later:
(http://i163.photobucket.com/albums/t285/HAULINIT/groove-1.jpg)

Title: Re: What do you guys think about this article?
Post by: VileZambonie on May 05, 2009, 12:19:53 pm

Manufacturers have blown away this technology years ago. As far as cutting groves in your already prone to crack cylinder heads would be something I would avoid.

check out SVCC, displacement on demand, atkinson cycle, and stratified charge engines.

Title: Re: What do you guys think about this article?
Post by: Blue 82 on May 05, 2009, 08:46:40 pm

he sez:

raise the compression to 10:1
Piston to deck should be .070"
resist the temptation to reduce it to .040"
then cut a 1cc canal in your heads

Title: Re: What do you guys think about this article?
Post by: Skunksmash on May 06, 2009, 05:12:50 am

That's weird. But according to his article some manufacturers are already using this technique. Be kinda cool if you knew exactly what you were doing, but i would be too scared to go digging a channel in my heads. Guess i would try it if i had a ton of money or something.