.: XT660.com - The #1 XT660 Resource :. - xt660 crankcase knock diagnostic vids and fix!

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- - xt660 crankcase knock diagnostic vids and fix! ( https://www.xt660.com/showthread.php?t=20512)

Quote:

Originally Posted by marques (Post 199305)

Anyone got a part number for the lock wAsher as I am not feeling save riding around at the moment especially when I have no idea if it's correctly torqued or not!
Probably wait to another 5000k has passed. Price of changing oil is ridiculous.

If you put it in gear with the front break on and try to drive foward and its knocks its head off then dont use it untill its done as it could write the crankshaft off .... as for socket size all I can say is a mesured with a rule and bought what I thought was the correct size but it did feal amsize 2 big so 37 would be better but like I say I used a flat sided deep imact socket and made usre I kept it pushed all the way home and applied the force squire and it was fine did it at 120 nm and no sign of slipping or damging the nut BUT one of the gurus on here will be here shorty im sure and will tell u the exact size and part numbers of everything

Quote:

Originally Posted by Schnidely (Post 199219)

Yammy XT's aren't the only motors that this problem occurs in. My Ducati 900 two valve had the same prob up around the 50 or 60k km mark. A cheap fix for something you initially believe could be big $$'s is always a welcome relief.

Sent from my MB526 using Tapatalk 2

+1...Have a WR450 that owes me plenty after H/C JE, re-plated cyl, cams, powerbowl, ECU, rims etc etc. Had a couple of flat track outings and now I hear this noise??? Seems there is still hope :hcrap: Off to the shed!!

Besides my XT660Z I also own a XTZ660 from 1991. I recently changed the piston. After the rebuild I hear this clicking noise. To me it sounds similar as the vid from the topic starter.

What do you think?

https://www.youtube.com/watch?v=Fh-C...ngq_JV0ob4sLPA

Valve clearance must be OK. I also checked the automatic chain tensioner which is OK. The sound doesn't really speed up when I rev the engine.