Re: Pcv
My father experimented with this many years ago and it did not work. The issue with what your friend is trying to accomplish is that if you have a bad enough oil leak that you need vacuum to correct, you have a bad vacuum leak also unless a positive seal is used on the rear main. At either point, all you end up with is a bad vacuum leak that creates poor performance, and a messy oil leak too. Several have either manufactured a rubber rear main seal, -or modified an existing seal to be used on a Model-A rear main, but many of those have also proved to have issues.
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