Jump to content
Sign in to follow this  

do i need new piston rings?

Recommended Posts

hey i have an 05 crf250x and i recently took the head off of it to replace the valves. and noticed that i had alot of carbon buildup on the top of the piston. then i took my finger put it ontop of the piston and noticed that i could wiggle the piston back and forth just a little bit to each side. is it normal to have a little wiggle room? and if so how much? thanks this would be very helpfull

Share this post


Link to post
Share on other sites

It's called cold clearance, and it's necessary to prevent the piston from seizing in the bore when it heats up and expands. As for what this clearance should be, it's listed in your service manual as piston/cylinder clearance.

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

Reply with:

Sign in to follow this  

×
×
  • Create New...