wrist pin needle bearing queston - Motorized Bicycle: Engine Kit Forum

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		Motorized Bicycle: Engine Kit Forum > Bicycle Motor > 2 Stroke Bicycle Engines & Kits
wrist pin needle bearing queston

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2 Stroke Bicycle Engines & Kits 2 stroke motorized bicycle engine kits need careful installation and setup, find out how from our professionals here!

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10-02-2009, 03:43 PM

joek

Motorized Bicycle Member

Join Date: Sep 2009

Location: detroit

Posts: 31

wrist pin needle bearing queston

I have a BGF Z50SL that I pulled the top end to clean out swarf from the crankcase and cylinder. the wrist pin
bearings radial freeplay feels ok, but the axial play seems excessive, the piston, wrist pin and bearing will rock side to side in the rod jounal about 5 to 10 degrees. is this normal for these engines?

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