Exaust Cam Slipping after DCM

2 replies to this topic
  • YZ400dave

Posted August 10, 2009 - 05:40 AM


I just put a stage one hotcam for a 03 yz450 into my 99yz400 for the DCM, took it out this weekend and after some fairly easy riding the exacust cams slipped forward a tooth and it wouldnt run.:worthy: Fixed it at the camp site and it fired right back up. After about another 45 mins of riding it slipped agian... I didnt replace the cam chain while putting in the new cam being cheap :thumbsup: so i am going to do that. Is there any other reason the cam would be slipping? The cam chain tensioner seems ok. Do the cam chain guides wear out?

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  • grayracer513

Posted August 10, 2009 - 08:33 AM


The two most common reasons are failing to replace the chain, and incorrectly torquing the cam caps, causing the cam to seize.

  • YZ400dave

Posted August 10, 2009 - 06:59 PM


Bought a Torque wrench just for this so all signs point to being a cheap bastard and not buying a new chain :thumbsup:
Thanks Gray, i've learned alot from reading yours and a few others post

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