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Posted

I have a ticking/clicking sound coming from the stator side crank area. Could it be bearings going bad? Motor has maybe 20/25 hours on it if that.

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Posted

Also on the clutch side piston & dome has some very minor pitting from detonation I'm assuming? I'll post up pics in the am.

Posted

I check behind the flywheel to make sure it wasn't the stator bolts or the flywheel key sheared off. Everything checked out good. I got the crank out the motor, it seems i have some minor rusting on the crank. Guessing I sprung a leak somewhere? What would cause rust inside the crank area? Pics in few min

Posted

All the bearing still run smoothly, rods & wristpins are normal, no play. The little gold piece is what caused the nicks in my dome and piston top. Pretty sure that a piece of a TZ bearing if not mistaken? Only thing gold in the bottom end I can think of so I didn't have any detonation issues.

Posted

I had this crank for a few years. Ran it in my old 421cub and when I went bigger I just swapped it into my supercub. Never had a problem with it before. But this is the first time I put a TZ bearing on it. Rods and everything on the crank are ok. I didn't have them done, same rods that originally came on it. Bearings all move smoothly. I guess the TZ just gave out for some weird reason.

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