Yamaha GP1200R Compression

[Stoffen]

Hi!

My friends Yamaha GP1200R has 150 psi on two cylinders but the third has 130 psi. Is it ok?
Or do he have to tear the engine apart?

 

[aklim]

That sounds borderline off to me. 20 psi

 

[danharley1974]

does this ski have any after market parts and what year is it most generally they only have 120 psi on 99 and newer unless there are after market parts installed and it is not that common to have 150 psi on any of the stock 1200 models

 

[Chester]

I agree, it must have a high compression head. It's time to tear it down. Post pictures of the damage.

Chester