Any one know stock cylinder compression? Is it suppose to be 175psi?

[fastf50rd]

I thought i messed up my motor because of the crazy pinging issue that just suddenly appeared. The car smelt quite funny and didn't sound too good so i did a compression test to just make sure things are still normal. Each cylinder is within 4psi of eacother, the only prob. is the pressure is up around 175 psi. To me this doesn't sound normal considering when i did the compression test before the s/c install, each cylinder was within 10psi of eacother peaking at 106 psi. The only thing i can think of is extreme carbon buildup. I ran the seafoam stuff through her, and i still have the same pinging issue.

 

[Rootus]

It's difficult to draw any conclusions from the absolute value of the numbers. That said, I get 175 psi with my 58cc aluminum heads.

Why not just pull a bit of timing? I would want too much pinging with boost.

Dave