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Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
Posts: 21,140
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being how you were working with the alternator I'd confirm that the alt bearings are not making the noise. Engine sound can sometimes be difficult to pinpoint. A cheap auto parts store stethoscope or a long piece of 3/4" hose placed near the tensioner and the other end to your ear. The fan shroud side air adapter can be easily removed to somewhat check the bearings. I'd probably start with removing the fan belt and see if you have any fan play.
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Ronin LB
'77 911s 2.7
PMO E 8.5
SSI Monty
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w x6
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