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Old 11-03-2020, 03:10 PM   #3
Ronnieroadster
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Location: East Coast in CT
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Default Re: Remote oil filter fitting re size

Quote:
Originally Posted by Rudolph View Post
hello, I am doing the mod of installing a plug inbtween the oil galleries but I want to drill out both the side and top threaded holes for bigger fittings, what’s a good size to go to? Might be hard to go much bigger on the raised boss one.
To answer your question.
If your block is a 59A or 8BA the pipe thread size increases to 3/8 from the present Ford size which is 1/4 pipe. However if you have the earlier block pre 1946 going up to the 3/8 pipe size would be hard to do since the raised casting area for the oil sender and oil filter return line is very small in diameter with only enough material for the original size 1/4 pipe thread. Using only the smaller 1/4 pipe thread size is to small for the oil filter conversion.
Ronnieroadster
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