Home
Basic Dirt Bike How-To's - Video
Dirt Bike How-To's - Video
Living The Moto Life - Video
Bike Tests | Shoot-Outs - Video
Forums
What's new
Latest activity
Log-In
Join
What's new
Menu
Log-In
Join
Navigation
Install the app
Install
More options
Close Menu
Forums
MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Piston size A, B, or C if buying a new Piston
Reply to thread
Message
[QUOTE="Yankov94mx, post: 1481575, member: 147199"] The service manual of your motorcycle contains information about the cylinder to piston clearance. It’s usually a tolerance and I take the smallest value. For instance, for my two stroke it is (0.06mm). You take the smallest because the clearance increases due to wear of the parts. Then you use a bore gauge to measure your cylinder bore (you would also need a micrometer). The service manual should explain how you do it. You usually do 3 or 4 measurements along the bore. Then you repeat the same but you rotate your gauge 90 degrees. The manual should tell you what is the maximum allowable difference between these values. It could be that your cylinder is worn already even if you cannot see it. When you get your cylinder diameter you deduct the clearance value and you get your piston size. Example: Cylinder bore - 66.40 Clearance - 0.06 So my piston should be 66.40 - 0.06 =66,34 [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Piston size A, B, or C if buying a new Piston
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top
Bottom