Quote:
Originally Posted by 37fatfender
“My” experience was you do have to install an internal plug in the oil feed internal line to the rear main, otherwise that oil is NOT filtered. The back of the block is drilled and a bypass line is installed to feed the rear main with filtered oil. My advice is to contact Red’s see if they can at least supply you with the drawings. I do think Red Hamilton has retired or sold the business. Good Luck
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The 80% system (with the plug) filters all of the oil EXCEPT what goes to the rear main/ big ends and rear cam bearing.