oil pressure question

[jerrywv]

I got this tractor 1964 4000 gas about a year and a half or so ago. It had literally no oil pressure. After some looking I found the nut on the oil filter tube part no.66738 was not there. I found a new old one installed the packing and nut. OK now I have oil pressure cold 90 psi hot 70 to 75. what is wrong?

 

[riveroadrat]

Sounds like good oil pressure to me. Maybe I dont understand your question.

 

[Fordfarmer]

Sounds like unusually high pressure, although I'm not real familiar with those pre-'65 diesels. Maybe recheck with another gauge?

 

[old]

Oil pump relief valve is sticking.

 

[jerrywv]

thanks guys I guess it back off with the oil pan.

 

[Texasmark1]

I have a '64 4 cyl 2000D I bought probably 20 years ago. Current hours are about 3750, OEM proof meter works, no wrenches on the engine proper ever. I have always used 15w-40 dino oil. I initially worried about my oil pressure running over 50 when cold at PTO and above 40 when worked hard.

Thought maybe I had a stuck pressure relief valve (30 psig like my JD tractors). Guess that's the way it's supposed to be since everything has worked just fine over the years and engine starts and runs like a top, even in the winter with no starting aid most of the time....only oil consumption is on the ground under it. But so what. Considering it's age.

No way am I going to tear into it just because of a few leaks. I figured after this many years of using good oil, keeping it clean and using "snake oil" after market engine hygiene products it would have cleaned out by now and dropped down to 30. It hasn't.

 

[souNdguy]

Agreed.. check with another gauge.

I have seen 65 ish cold throttle on a tight engine... 75-90 would concern me.

 

[JMOR]

Just convert to a spin on oil filter, as it will be your "fuse" as you approach that 90-100psi area. :twisted:

 

[ErnieD]

4 or 3 cylinder? Not real high for a 4 cylinder, had a 851 new with 80 cold, went a long time
rebuilt engine and it still had 80 and everything was right. NAA same deal. I would run it.