Moparman

Question concerning oil pressure. Yes there are many contributing factors to this question. Oil weight, bearing wear, malfunctioning oil gauge etc. My 42 Dodge truck 218 flathead oil pressure has me puzzled. Comparing this to my 48 with a 52 230 flathead. My 48 hot running down the road holds 40psi and at a idle about 35. This is with the stock 48 oil pressure gauge. Now my 42 is a different story. Hot running down the road is about 30psi at idle maybe 15psi. stock oil pressure gauge. According to the repair manual(printed in 1947)this is acceptable. Both are running 15w40 oil. Would a bad pressure relief spring cause this or is the oil pump bad. Or am I just over thinking this problem and this is acceptable.

I own one of each 42 WC and a 48 Pilot House

No need to convert to 12v, my 48 & 42 run 6v. If tuned up properly you will have no problems. Both start easily hot or cold and even after several days of sitting. Keep it stock, it’s worked well for many years. Just remember everything is positive ground.

Recently changed the head gasket in my truck. Along with an oil change. My question is about the oil filter, Wix 551011. To me there is no possible why this filter will fit, Is the filter to be that tight? If so how do you put it in to the filter housing, and once in there will it come back out.

I have looked through the archives of this forum and yet have not found an answer to my problem. I am replacing the head on my 42 Dodge truck. My question is can a modern thermostat be used. Say for a slant 6 in replacement for the original. Below is a picture of the original thermostat.