New oil pressure switch doesn’t fit...318 LA

nm9stheham said

RT. don't want to be discouraging, but 'sorta sealing' is asking for trouble. If it starts to leak on a long trip, you may not catch it in time; this point is right at the heart of the oiling system. Please back up, find out the actual threading that is in the block now, and let's figure out how to properly seal this.

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I’m pickin up what you’re puttin down. The adapter I found threaded in pretty good, and I think the insurance of the thread sealant is just that - insurance.

After reading your reply just now, I tried getting it out by hand, and couldn’t. Now I didn’t bear down or strain or anything, but it’s seated very well. The switch threaded very snugly into the adapter, so I’m not worried about that, and with the adapter being as firm as it is in the block, I feel pretty confident with its soundness once the sealant cures.

I’ve never gotten bad advice from you, so what do you have in mind? I could find the tap I used to chase the threads and find an adapter that’s the same? I honestly don’t think anything I found would be much different than what I have currently though.