Hello. I'm curious!



How low could you lower the compression using an Alaniz head that has been modified specifically to lower the compression / avoid detonation?



If nobody knows the answer, a source to someone who would be able to answer would be appreciated.



Tomorrow I will be driving the S2000 to Whistler and I'm sure I will be wanting more power by the time I get home Saturday night.

 

Sideways would be the one to ask-

 

Why don't you email Joe Alaniz? alaniztechnologies.com

I haven't heard of anyone trying to lower compression with this method, I would be pretty scared to go that route...

Chris

 

Actually, its pretty simple. Opening up the chamber can improve flow, but it also reduces compression (why many head porters mill heads after porting to get the chamber size back to normal). Certain valves also can increase or decrease compression ratio depending upon the backside profile.

You're not talking huge differences - maybe a half point or so, but on an 11:1 motor, every little bit helps. If you're planning on doing headwork anyways, you might as well. If you're thinking of doing headwork as a way to lower compression enough to skip pistons/rods, then you're not being realistic.

UL