38k Miles time for new main bearings
Hi guys! Great thread!
My mike was redden by a friend of mine for 38K miles... it was never in the dirt and oil was changed every 2K miles or so. The bike is VERY clean inside the cases. I have seen bikes with 2K miles with a black coating inside. Cam is perfect with little to no wear, cam chain is still in great shape as adjuster was only out half way. The piston was very clean and rings are about 70% worn by measuring at the ring gap per the manual. The main crank bearings are worn as you can rock the crank in the case. The rod has no up and down play as well as the piston pin.
My plan is to:
1) New OEM piston rings with a hone job... the bike did not smoke at all before I took it down. You also can still see all the factory hatch marks on the cylinder wall!! That shocked me!
2) Lap valves with new seals
Piston looks great with little wear on it. I can feel a little play when it is in the cylinder but very little.
Any other ideas while she is all torn down?
I'm lucky this is the 1989 bike so it has the updated head bold pattern.
Thanks SO Much guys!
Eric
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