compression
so i finally got around to picking up a compression gauge and this is what i came up with
cyl 1 - 185psi
cyl 2 - 185psi
cyl 3 - 185psi
cyl 4 - 165psi
cyl 5 - 175psi
cyl 6 - 165psi
sounds good???
btw i dont understand why everyone btches about the plugs they were easy try doing plugs on a fwd 4.0 V8 northstar motor thats a btch
cyl 1 - 185psi
cyl 2 - 185psi
cyl 3 - 185psi
cyl 4 - 165psi
cyl 5 - 175psi
cyl 6 - 165psi
sounds good???
btw i dont understand why everyone btches about the plugs they were easy try doing plugs on a fwd 4.0 V8 northstar motor thats a btch
The Haynes manual says that the minimum compression pressure is 100 psi and the max variation between cylinders (highest to lowest) is 30%.
Based on that I'd say your 3.4 is in very good condition.
Based on that I'd say your 3.4 is in very good condition.
Fourth Generation Moderator
October 2009 ROTM
October 2009 ROTM
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Joined: Nov 2007
Posts: 10,560
From: Eastern PA,
ROTM Winner's Club
I had a guy complain to me one time about how hard the plugs where to get to in his 67 impala with a 327 cause it had headers on it. It is all relative. It is a pain if you do not own a swivel. LOL
3.8l without a swivel sucks.....but like you said its all relative to what pina means to you


