Last week i got the compression numbers back for my engine, front rotor 6.7 on all faces (obviously on the mazda tester), and 0-0-4.6 on the rear rotor, I actually suspect my motor has been this way for a while but slowly deteriorating from day one, i suspect boost creep, i didn't have a boost gauge, and my wastegate wasn't ported, and i had the RB turboback, intake, rtek 1.7, 720cc secondaries, and a walbro fuel pump, and i romped on it quite a few times. The local rotary shop told me not to worry about boost creep too much but i think thats what killed her. I'm really curious about what kind of problems a low compression motor could cause for a car like example.. erratic idle? bad gas milage? vibrations? any other symptoms?

 

If you have 2 faces with 0 compression in the back, you have a blown apex seal. Pure and simple. Rebuild time.

And running with turboback exhaust, intake, no boost gauge, and a stock wastegate is pretty stupid. No offense.

-=Russ=-

 

yea i know , i'm getting the wastegate ported during the rebuild time..