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Old 01-14-2007, 02:06 PM
locksim locksim is offline
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Exclamation Crankshaft end float

Does anyone know whether I should worry about end float on the crank of my 11? If I pull and push the rotor under the left hand engine cover I can get a distinct clunk from what I assume is crank end float. Is this a problem? What will it end up doing to my engine?
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Old 01-18-2007, 07:40 PM
mainlylinux mainlylinux is offline
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mine does it too, and the motor runs great. I don't know what the spec is supposed to be.


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Old 01-19-2007, 08:49 AM
mro mro is offline
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What will it end up doing to my engine?

As per Yama manual, the #4 main bearing provides crankshaft side thrust. Does not have a specification for "side to side" play tho.

Checked Clymer book too, side thrust info N/A.

If thrust bearing oil clearance is good on the crank, guess side/side good too


mro
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Old 01-19-2007, 11:32 AM
locksim locksim is offline
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Question Crank end float

Thanks. I wonder if anyone knows of a critical figure beyong which the thrust bearing needs replacing? I can't find that anywhere!
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Old 01-19-2007, 11:34 AM
locksim locksim is offline
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Mine manages to 'clunk' with 0.17mm side play. I guess on a car this would be critical but I've no idea about whether it is on a bike as clutch thrust isn't an issue.
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