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
Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
1985 yz250 top end rebuild help
Reply to thread
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
[QUOTE="tylerandreasson, post: 1402833, member: 120808"] ok so i have a 1985 yz250 i just got, and the guy i got it from told me it needed new piston rings because the radiator got kinked, which it clearly was. so i took the top end off and i looked at it and the piston rings are pretty much gone on one side, almost like melted into the piston.. so i thought i could just buy a new piston kit, but someone told me since it is a 1985 that it is almost sertanly bored already.. so i looked on top of the piston and it says "mm .50"... does that mean it is at 68.50mm since 68 is the stock size? also the cylinder was scratched where the piston had beedn rubbing on one side. could i just get that honed? and then just put a wiseco 68.50mm piston kit in it? tell me what you think.. Thanks, Tyler [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
1985 yz250 top end rebuild help
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