Compression Question

[90S13Pilot]

On a brand new rebuilt motor (SR20) that hasn't been broken in or had the rings seated... what would be an acceptable compression? How much do compression numbers go up once everything is broken in and seated?

[Sileighty_85]

Most ppl dont do compression tests on fresh rebuilds until broken in.

A fresh broken in engine will be around 150psi with 8.5:1 CR