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« on: May 22, 2019, 12:26:38 PM »
Paul I fixed my 302 leak after having the engine out 3 times to do it. Very frustrating.
Bottom line measure and check everything, my leak was at the crank rear seal journal.
Turns out a machinist (at some point) cleaned up the seal journal by removing .010" created a significant leak.
I used a .010' shim under a new Fel-pro Fluoroelastomer seal and sealed both the shim mating surfaces to the block and to the seal.
Use a good RTV Mil-A-46146 Adhesive Sealant.
Problem is the crank has to come out to perform that! So not an in the car seal replacement.
Funny things happen to motors after 50 years! So again start with block is the dimension correct no line bore?
Whats the journal dimension?
Todd