01-10-2008, 05:56 PM
|
#1 (permalink)
|
|
Free Rides 4 Cute Girls
Join Date: Jan 2004
Location: AZ
Drives: 321AWHP 95VR4 SPYDER
|
need expert to calculate compression
I have a 95 vr4 with forged pistons that ross say are 9:1
Using head gaskets that measure .054 at the clyinder opening I have 172 to 175 psi.
I would like to reduce the compression down to about 160 psi.
Can anyone calculate how much thicker of a head gasket would i require to achieve this?
the cylinder measures 91.87mm
I called Cometic but they are just salesmen and can not help me with any technical info.
They have gasket thicknesses in .060 .065 and .074
1.5mm 1.625 1.85mm
If anyone knows of a formula to calculate this, I would be greatfull.
Thanks.
__________________
Fully rebuilt engine w Ross forged pistons, lightly ported and polished heads, Fidanza adj cam gears, fidanza Flywheel, 6 puck clutch, Greddy ebc and bov, 99 lifters, Redline oil in all gears, Greddy Ultimate, 550 injectors, hotwired walbro fp, NGK plugs, MSD8.5mm wires, 3sx alum pully, poly motor mounts, 13T turbos, adj FPR, 2" alum Rad, polished intake, custom made 3" exhaust from turbos back w high flow cat and magnaflow muff, 19" chrome TSW Bremma wheels wrapped in 275/30/19 Mich Pilots, crossdrilled rotors, Redstuff front and hawk rear brake pads, Spyder floor mats, Cone air filter. and Pretty girls in pasenger seat! Occasonaly......lol... Just added alcohol inj !!
 |
|
|
