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post #223 of (permalink) Old 10-25-2017, 10:17 AM
alfaparticle
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Join Date: Oct 2004
Location: Columbia SC
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Quote:
The best fix is to cross-drill the #2 and #4 block and main bearings for direct oiling.
That is unnecessary on an engine that will not see lots of action above 7000 rpm. I have been running a 170+ HP motor for years, regularly shifting at 7000 rpm and there have been no bearing lubrication issues (just sheared flywheel bolts!)

RJ has posted that the main benefit of cross drilling for direct oil to #2 & #4 mains is that it improves the oil feed to the rod bearings which are the ones that typically fail in race motors that have not been modified.

Ed Prytherch
79 Spider
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke

Last edited by alfaparticle; 10-25-2017 at 11:18 AM.
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