Engine knock 1948 Flathead V/8 59 A

[Philgoodtoo]

I have an engine knock I hear coming from the # one cylinder. There is low to no oil pressure reading, especially upon warm-up.

I think maybe there might be a spun rod bearing. But wouldn't I have a knock in #5 also? Seeing as how two rods share a bearing? The engine looks to have been worked on. Would it be possible to get by with replacing the one bearing? Or am I just wishing.