Hi,
I have been looking for some type of comp. conversion calculator.
My son has a predator 90 and I had some problems w/the reeds breaking off and going into the cylinder. When we did the first compression check it was 60psi...I am hoping this was because the reeds were still in there. the manual states the compression is 7.7:1 can anyone convert that for me
Ty in advance.
justinsmom