Compression check PSI for forged, low compression motor.
Thread Starter
Melting Slicks
Joined: Nov 2003
Posts: 2,213
Likes: 135
From: In front!
Compression check PSI for forged, low compression motor.
Does anyone know what PSI each cylinder should be on a compression check for a forged 347 lower compression (9.5:1) motor with a mild blower cam, cold, with the throttle plate closed should be?
This is a buddies car and his readings were only a few PSI off but all in the lower 100's. His leak down numbers were good (7-13%). Thanks.
This is a buddies car and his readings were only a few PSI off but all in the lower 100's. His leak down numbers were good (7-13%). Thanks.
Drifting
Joined: May 2010
Posts: 1,482
Likes: 2
From: Pearland, TX
Too many variables to say. If they were consistent and the leakdown tests were good, then I wouldn't worry about it.
Low 100s sounds low but the type of gauge and length and type of hose will affect the readings.
Low 100s sounds low but the type of gauge and length and type of hose will affect the readings.
