Thread: My compression is off
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03-16-2007 05:18 PM #1
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My compression is off
I just realised today that my block has a 0 deck height, I think the machine shop 0 decked it, but didn't tell me. I had .025 which I figured everything out, I would have 8.35:1 with my pistion/ head combo. well, I figured everything with a 0 deck height today and 8.81:1 is the comp ratio, still ok for 8 PSI of turbo boost, probably right where I need to be, because of the turbo I have, will be most efficent right around 8 PSI. so my new HP numbers figuring desktop dyno 2000 are 324 HP @ 6k and 283 Ft/Lb @ 6k. seems about right to me.
the pistions are 2.3L HSC ( Tempo/ Taurus ) pistions, so they might be the cause of the decreased deck height, but IDK, the head surface shure looks milled.You don't know what you've got til it's gone
Matt's 1951 Chevy Fleetline- Driver
1967 Ford Falcon- Sold
1930's styled hand built ratrod project
1974 Volkswagen Super Beetle Wolfsburg Edition- sold
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03-16-2007 08:18 PM #2
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the thing i would worry most about now is how much tighter your valve clearance isjust because your car is faster, doesn't mean i cant outdrive you... give me a curvy mountain road and i'll beat you any day
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03-17-2007 02:44 AM #3
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yeah, I know. the cam is .495 lift so I'm gonna have to check it
Originally Posted by thesals
You don't know what you've got til it's gone
Matt's 1951 Chevy Fleetline- Driver
1967 Ford Falcon- Sold
1930's styled hand built ratrod project
1974 Volkswagen Super Beetle Wolfsburg Edition- sold
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Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance