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Talk to anyone who is regularly building 911 engines for track use. They will tell you about premature failures in rod bearings for 2.4/2.7 and 3.2/3.3/3.6 crankshafts. I have one friend with a 2.7 and a 3.6 track car. Both suffered rod bearing failures first time out. This is the reason the Clevite bearing was developed.
I am building a 2.45 for my '70E street restoration and will be using the Clevite bearings on the advice of the local Porsche engine guru here in CT.
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Tom Butler
1973 RSR Clone
1970 911E
914-6 GT Recreation in Process
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