Jump to content
Sign in to follow this  

04 RM 250 engine compression..

Recommended Posts

What would be the average engine compression on a 04 RM 250.. Recently bought this used bike, I have the fuel tank off so I thought I would do a compression test.. I was told the piston was changed and only has approx. 10 hours on it. Here's hoping for good results.. thanks in advance..

Steve.

Share this post


Link to post
Share on other sites

So I just did the compression test and with 6 solid pumps of the kick starter the tester shows 170 psi..reran the compression test 2 more times just to be sure.. right around the 170 mark.. this I believe to be pretty good, also this compression test was done on a cold motor, 38 deg.f in my shop right now...This makes me happy :banghead: not the weather by the way, :) ground still frozen in these parts, no riding yet.

Share this post


Link to post
Share on other sites

That's good compression. However, as a rule of thumb it's a good idea to replace the top end on any "new to you" 2T. It's a $100 insurance policy and you also get to see what is or has gone on inside the motor.

Cheers!

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×