I am just at the stage of starting my high oil pressure 235 out of a 1954 3100 (unknown history and not completely assembled). The engine had a bypass filter that looked like it was set up for a car of the period, but it was not hooked up, no T on the outlet just opening for oil pressure gauge. I had a bypass filter on the 216 I am replacing, same as the one from the first post, same line size and locations. This filter only has one small hole half way up the central post and filter sits in a 3 inch bath of oil. The supplied top cover gasket from the new filter cartridge was not large enough so I used the old one. Cranking the engine I noticed a leak at the lid of the oil filter.
I took the oil filter feed line and connected it to the return on the engine (no filter).
A couple of questions;
- should I be using this filter and these size of lines?
- what did a normal high pressure 235 in 1954 without oil filter look like? all internal passages?
- would a 235 of this vintage have the pin mentioned, I could not see it.
She did start and run after unknown years

that is until the water pump gave out.