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After i got my grey motor carby reco'd I had a big flat spot on light acceleration. Mechanic doing the tune said he fixed it by adjusting the float level.

Cheers
Peter.

I think it was around $200 odd for B/E and main undersize bearings. $240 for 2nd hand crank. $200 odd or so for crank journal grinding. Gaskets and something else.

Cheers
Peter.

It doesn't seem like you are going to be able to completely prove that one of the previous engine builders hasn't done their job properly as they are unlikely to admit it but to me it appears to point to that.

I think this is very close to the truth.

Crank is stuffed. Main Bearings stuffed ...

Hi Sunnytim,

Yes it was the same guy that assembled the motor but he didn't fully recondition it. I'm a bit stuck with warranty unless I can prove they assembled it incorrectly.

History

Motor was purchased 30 years ago recond from GEM engines. It has never done any KM's.

It was fitted to the ...

Unfortunately no good news today. Engine builder says crank float is 40 thou'. Crank is damaged and main bearing.

The cause ?? Well engine guy thinks a mis adjusted clutch could cause it. He thinks if thrust bearing was always under load it would put pressure on crank. I'm doubtful it could happen ...

Hi All,

Does anyone have any new crank bearings, crank thrust bearings and a maybe even a new crank ? Motor could be a 138. Engine number is B320XXX which I understand is FB/EK 138 ??

Mechanic checked motor yesterday and diagnosted too much crank float. Strange, since the motor has only done ...