Re: Bad noise in b.n.engine help??????????

Posted by Owen Aaland on July 10, 2007 at 22:22:33 from (65.165.246.40):

In Reply to: Bad noise in b.n.engine help?????????? posted by COPPER KAT on July 10, 2007 at 21:43:55:

Something has too little clearance. As it warms up and expands to siezes up. Places to look are crankshaft clearances on all bearings. Piston to sleeve clearance. Piston ring end gap. Oil pump gear end clearance.

Since you said you found some silver flakes my guess would be the oil pump gear clearance. If the bottom plate was resurfaced (or even if it wasn't) it is quite possible that you will need more than one gasket there to get the proper clearance. Since it is aluminum it can quickly heat up and expand and also cool down quite fast to allow the pump to turn again.

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