Ok last weekend i been at the track and my vacum hose break so my turbo boost way to much Now my engine smoke oil when i hit the gaz i ve Check the turbo is ok
Now i Check the compression i have 85 psi on 2 front cylinder and 95 - 100 to the others i have 8-1 cosworth piston is it normal i think its Low but i m not shure

Thanks for help me out
I Know my english suck im french lol

 

read the pressure at home, uncorrected so PSIa, multiply by 8 and that is what you should get max...depending on losses in rings/valves.

is home a high altitude location?

 

I Forget to say my engine was rebuilt 2 week ago
I live in Québec Canada its not high altitude here and i ve Check the pressure at home after running the engine 5 min whit out turbo my friend Mecanic think its the seal valve leaking What you guys think

 

Seal valve leak inf. For the oil smoke not for compression lol