Just as the title states I'm going to go look a car with the 4g63 six bolt motor and I'm bringing my compression gauge with me and just wanted to know what a good compression number for all cylinders is? Thanks

 

Over 150 but its more important that they are as close to the same all the way across.

 

You dont want to see more than a 10psi difference between the cylinders .

 

Last time i check mines about 8 months ago it was 160,155,150,149 on a 100 + k stock bottom end.

Carbon build up on the richer 3rd and 4th cylinder id suspect.

If we can get some E85 here eventually id like to do a engine overhaul with stock internals except using forged 9:1 compression pistons instead.