well idont know how good my gauge is but i could only get about 100-110 psi ?? my head has been shaved like .70 thou and reshaped i thought i would be around 150-170 and the little hole is plugged aswell for the release in the exaust port[img]i/expressions/face-icon-small-confused.gif[/img]

 

Make sure you hold the throttle open while you are checking it.

 

I tried 2 different gauges that I thought were known good ones and didnt get much on my banshee, but I went and bought a new one and it jumped up about 50lbs where I thought it should be. You should be more than that for sure.

 

thanx ya i did it twice the 100 no throtle and the 110 was wide open as i was not sure if i had to open it up or not i will borrow my buddys and see what it says as i only have about 500 or 600 miles on it most of that is road riding dialing it in and playing

 

I did the same thing....I used a buddy's, and it only showed about 75 psi. I went a bought one...come to find out my buddy's was junk.

 

Go here and read this.
Some info about compression testers that many people don't realize.

Compression testers