As you all know, the comp ratio in a b17a1 is roughly around 9.7:1 and I was thinking about throwing a thin head gasket on to bump my compression up a bit. Yes I can do pistons but I'm waiting to get all my money together to buy all my parts and I was going to do this in the meantime. What type headgasket should I go with and what thickness. How much will it bump my comp up and will I feel a difference?

 

I don't know about how much of a difference, but if your wanting a thinner gasket i would use a cometic HG.

http://www.cometic.com/

 

I was thinking about doing that actually. I hurd a .030 ups it about .6. Not sure though. I would like to know if anyone does.

 

here you go man. check this out. this calculator is suppose to be pretty close. play with it a little. post up what you find out. hope this helps.
http://www.zealautowerks.com/

 

^^^^ thats a very convenient website. its cool that they can estimate horsepower and trans gearing. good stuff....

 

I just need a thin head gasket thats a std bore for the time being. I was looking around on cometic and the smallest they had was 81.5.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1992TegGsr &raquo;</TD></TR><TR><TD CLASS="quote">I just need a thin head gasket thats a std bore for the time being. I was looking around on cometic and the smallest they had was 81.5.</TD></TR></TABLE>

Can't you just remove the middle layer of an OEM gasket?

 

Yeah but I need a new one. I might just buy a oem one and do that.

 

Mugen or Spoon. You'll get roughly 0.3 points out of either one. Mugen's was specifically designed as a 2-layer, and seems to be one of the more popular choices. We've had no problems whatsoever with the Mugen gasket we installed on my brother's C5.