What would cause this to the valve?

1 reply to this topic
  • CO_Rider

Posted June 01, 2012 - 06:35 AM


Was checking the valves on a '11 with 50 hours on it and found 1 of the exhaust valve stems chewed up. Shim has some marks on it also. Bucket seems fine. Any ideas on what happened?

Posted Image

Posted Image

Edited by CO_Rider, June 01, 2012 - 06:38 AM.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed

Posted June 01, 2012 - 01:06 PM


Valve float?

If the valve floated the shim could loosen from the bucket and land on the stem cocked.

Related Content


Is it worth it? (Cam and High compression piston) by macgi77

Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 replies

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies

Should I buy this bike? help....... by Numsa Hul

Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • * * * * *
  • 10 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.