by DJ Tomás » Tue Nov 16, 2021 7:02 pm
What should the compression pressure be for my 2021 500 RR-S? I can’t find any official values. With the auto decompressor, I can’t imagine I’d see near the 160psi I calculated based on the compression ratio and my elevation, but I haven’t done the test yet. I bought a leakdown tester instead, but I’m not sure how long the pressure should hold to pass the test. My end goal is to know whether or not I need to do my top end piston and rings. I’m at 90 hours on the motor.