quick ?

what would make the motor knock? its a 2006 450. is it time for a new top end? buddy does take his bike to the dunes alot..

thanks

josh

are you running a high quality high octane fuel?

its pump gas.. and after i posted this he brought the bike over.. motor is fine. timing chain is loose and is hitting the valve cover..

its pump gas.. and after i posted this he brought the bike over.. motor is fine. timing chain is loose and is hitting the valve cover..

curious on amt of hrs on the bike?

The timing chain should not ever be loose. That's why the tensioner is there.

its in 06.. about 100 hours plus.. he took it to pro cirucit about 2 weeks ago for a valve adjustment(or check).. been doing it ever since. its the original chain to so.. to me it sounds like its comming from the valve cover.. i told him to replace the thing anyway due to the amt of hours on it..

Wise to replace it periodically, but it would be interesting to see if PC opened up his clearances some and caused all the racket that way.

maybe.. i have no idea what they did to it. he dosnt even know. but whatever happans ill let you guys know.

josh

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