Compression PSI

[Eslayer]

Hey yall im new here & i was just wondering, Whats the normal compression for the 4g64 in a 91 mighty max? i cant seem to find what the normal compression PSI is for it online anywhere and i was wondering if anyone else knew.

[tortron]

A deviation of 5psi between neighboring cylinders and 15psi max to min.
anything over 100 is good. 135+ is very good. 150+ is getting into like new

Lower than that doesnt mean its junk, if they are all pretty even then the engine should run ok, but consider a rebuild down the track

This is done on a hot engine with dry bores

[B-Line]

A deviation of 5psi between neighboring cylinders and 15psi max to min.
anything over 100 is good. 135+ is very good. 150+ is getting into like new

Lower than that doesnt mean its junk, if they are all pretty even then the engine should run ok, but consider a rebuild down the track

This is done on a hot engine with dry bores

Did you do something to your font color? Its very hard to read.

[SubGothius]

Did you do something to your font color? Its very hard to read.

Fixed that for'em. Font color legibility depends on which "skin" you select to view the site -- the default Velocity skin has a dark background in posts where the Light Green and Blue skins both have a light background, so a custom font color that looks fine in the default skin may well be illegible in the others.

[B-Line]

Yea, that was painful.