compression ratio
Thread Starter
Instructor
Joined: Nov 2006
Posts: 232
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From: fairfax va
compression ratio
Please help me get a rough idea of my compression ratio.I have a stock forged L82 bottom end w/1 pair of valve reliefs,AFR 65cc heads,fel pro1003 gasket,no decking or milling. I have been running 93 octane with no detonation but i just wanted to be safe. The motor is fresh and has about 30 min of run time. Im trying to break it in easy although its very tempting to go WOT.
Race Director
Joined: Jan 2000
Posts: 13,015
Likes: 2,259
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
I'm coming up with around 9.6 to 1. I assumed 6cc piston dish, a .038 gasket and .022 deck height.
Check this site if you want to play some.
http://www.angelfire.com/fl/procrastination/motor.html
JIM
Check this site if you want to play some.
http://www.angelfire.com/fl/procrastination/motor.html
JIM
Melting Slicks
Joined: Aug 2003
Posts: 2,135
Likes: 2
From: Dayton Oh
This should be an intestering set of replies since your CR as indicated by 427HotRod is pretty hi for too much spary (assuming NOS). Typically you'd might want a lower CR but I'm certainly not an expert.
