So ive just put in a turbo II swap in my car and have driven it around with no problems other than a few tuning issues which i know how to fix and will do so soon.
Out of curiosity i went and did a compression test and found these results when cold:
Front rotor: 75,75,90
rear rotor: 90,90,90

The front rotor is what concerns me because when the N/A motor reached under 75psi compression it wouldn't start when warm after half an hour of sitting, thing is I've never encountered that problem with this motor, nor any of the signs of needing new seals (excessive oil consumption, low gas mileage etc.)
is there a way i can do a more precise compression test? How does a rotor wear unevenly like that? any advice is greatly appreciated

 

A bad apex seal will give low readings on two sides of the rotor.

 

how long do you think this motor can last for? rear rotor is actually 95 all around, and i double checked that.

 

you should get it warmed up and running ok for a while and then re-check compression. if the engine is not running right, compression will be low.