[mikyrc]

I've been reading about that grooving method and i was wondering if anyone of you guys have ever tried or know of somebody that has with goo results?

It seems that you can run more boost or compression ratio without detonation????

Here there's the info:
http://somender-singh.com/content/view/7/49/

photos

Sorry if that topic was already posted before. I did search but didn't find anything.

This is taken from a forum in UK:

Over the last two years I have grooved heads for more than twenty engines, I lost count. Most of these are performance or race only Generation I, II or III SBC. At first the results appeared to be rather vague, until I realized what was happening. The best way to describe it is: this modification improves the quality combustion to a point that it changes the characteristics of the engine. The limits of the engine are altered, the modification allows higher compression with out detonation, lean burn and ignition advance limits are changed and warm up periods are reduced. Fuel enrichment functionally can be reduced or eliminated completely.

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

What do you guys think?

 

[Thebullfrog]

I've heard good things about that grooving. Seems to be picking up a little bit of popularity with guys running the GM supercharged 3800 (GTP, Regal GS, etc.). Never seen any actual proof of it actually doing anything though. I think there's only like 1 or 2 shops in the U.S. that do it.

 

[mikyrc]

A friend of mine is going to test it on his 3000GT VR4.

More info:
http://jeremiahsviolins.com/grooved2.htm

Some coments from people experiences:
http://forums.turbobricks.com/showthread.php?t=74370

 

[turbo16]

I never heard of that before but it seems logical after reading about it. That's interesting.

 

[TEC]

I'll be passing on this one until I see more info. All it looks like to me is a better way of increasing the odds of preignition by having those sharp edges in the combustion chamber.

 

[RobSterKraw]

I have a buddy doing this on his 2.2 chrysler turbo motor. Hes also cryo treating just about every engine piece before he puts it together. I am very interested in seeing his actual results.

 

[Thebullfrog]

Yeah, I had the same thought about the sharp edges. If I were to do it, I'd round out the edges a bit. If you look at Seng's site, he uses softer edges than a lot of the other pics I've seen.