.120'' Head gasket for boost??
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From: NW Chicago burbs
.120'' Head gasket for boost?? Has anyone use a head gasket .120'' thick on boost?
I have a NA car with a decent amount of compression for a nitrous hit and I'm getting the itch to swap to FI but don't want to tear into my motor to drop the compression (piston swap). Ive been told that cometic makes a .120'' gasket and with that It will lower my compression down to 10.1 with the engine as it currently sits right now does that sound smart and safe? looking to make 8-12lbs of boost on 93 octane. 700-800 rwhp through T56.
My other option was 11.24 with .060'' gasket but I think that might be too much for pump gas.
I have a NA car with a decent amount of compression for a nitrous hit and I'm getting the itch to swap to FI but don't want to tear into my motor to drop the compression (piston swap). Ive been told that cometic makes a .120'' gasket and with that It will lower my compression down to 10.1 with the engine as it currently sits right now does that sound smart and safe? looking to make 8-12lbs of boost on 93 octane. 700-800 rwhp through T56.
My other option was 11.24 with .060'' gasket but I think that might be too much for pump gas.
Try a set of heads with a larger combustion chamber coupled with a thicker gasket and get the compression a little lower. That's a pretty thick gasket....I don't know if I'd want to put it against high cyl pressures.
if was me, i would prep the motor correct for forced indution. imo a thicker head gasket would be the last thing i would consider. to drop scr.
if anything i prefer my gasket to be thin as necessary to achieve a .035-.040 quench area. forced induction or n/a,etc.
options are either correct piston and heads chamber to lower scr
or run your car with current parts, fulltime on race or e85
if anything i prefer my gasket to be thin as necessary to achieve a .035-.040 quench area. forced induction or n/a,etc.
options are either correct piston and heads chamber to lower scr
or run your car with current parts, fulltime on race or e85
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Thread Starter
11 Second Club
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From: NW Chicago burbs
Thanks guys for the input. I've thought about E85 but in my area there is only one gas station that sells it and I like to take the car on decent mileage trips within the state and don't want to run into a issue of not finding E85 somewhere.
by chance whats the chambers of the 317 heads?
by chance whats the chambers of the 317 heads?
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if was me, i would prep the motor correct for forced indution. imo a thicker head gasket would be the last thing i would consider. to drop scr.
if anything i prefer my gasket to be thin as necessary to achieve a .035-.040 quench area. forced induction or n/a,etc.
options are either correct piston and heads chamber to lower scr
or run your car with current parts, fulltime on race or e85
if anything i prefer my gasket to be thin as necessary to achieve a .035-.040 quench area. forced induction or n/a,etc.
options are either correct piston and heads chamber to lower scr
or run your car with current parts, fulltime on race or e85
A set of 317's on a stock compression LS1 with .035" gaskets should put you around 9.5-9.6:1. With the 243's it should bump you up into the higher 10.0:1's somewhere. With E-85 you can definitely get away with a higher compression then pump gas. Just remember you need the fuel system to back it up. I would also look into getting them ported. I really don't care how many people say its not important, truth is its not AS important as a N/A setup but nevertheless increasing airflow raises the combos efficiency. The more efficient it is, the more power it'll make.
