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
'01 YZ250 Cylinder Suction Pipe?
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="Solid State, post: 1187834, member: 22186"] That's a good question. As I recall, the fracture occurs at the back part of the valve where the contact is made by the mechanism that moves the valve. Do a search on DRN and you should see a picture of a broken valve and some descriptions of the failure. I seem to recall that some people attribute the failure due to the valve shutting quickly and causing splitting/fracture of the stop mechanism built into the back part of the main valve. I also seem to recall that Yamaha had produced a stronger valve in subsequent years. I do not know if the newer valve can be retrofit or if someone supplies a stronger one. Perhaps some other member can chime in on the replacement. It would seem prudent to go ahead and replace it when you clean things up as fracture of the back part of the valve causes the valve to move fully forward and into the space normally occupied by the piston! I also seem to remember that the valve is over $100. Good luck. [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
'01 YZ250 Cylinder Suction Pipe?
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