Senior VR Member
Join Date: Oct 2004
Location: New Mexico, Silver City
Thanked 47 Times in 32 Posts
Ok, since I just had this pleasure Ill place my 2 cents in:
-The root cause of my failure was the tensioner, specifically the tiny little ratching mechinism failed (it really sucks that a part that is no bigger than a pencil eraser can cause so much drama). The tensioner failed, then the chain broke. Hindsight says there was a sound of the chain slapping around. When the chain broke, it took the cam sproket with it but did not do any further damage which would give me the educated guess of "NON-interfearing" . I chose to keep riding untill it broke because the cost of repair was about the same as the preventive. (except for the sproket).
I chose to do the repair myself even though I had never rebuilt an engine before. It was fairly straight forward and the repair manual is deciently well written. You will have to remove the engine. I put about $700 in parts into it and had to buy a few tools and borrow the rotor removal tool.
Failing tensioners is not a huge problem, but I have talked to many who have had it happen. we will never know quite how many engines die due to this, because many are never repaired, so they are not daignosed.
Bottom line: do what is right for you. If i had it to do again, I woud tear into the engine after hearing the noise but I wouldnt recomend waiting until it breaks, Partly because that cam sproket is expensive, but mostly because it was a real pain flushing all the metal shavings out of the engine without splitting the case.
If you choose not to decide, you still have made a choice.
I will choose a path thats clear, I will choose free will.
Last edited by soflavol; 05-26-2011 at 04:01 AM.