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Re: ‘59 235 Low Oil Pressure [Re: Phak1] #1333019 Fri Nov 08 2019 07:22 PM
Joined: Dec 2008
Posts: 1,327
P
panic Offline
Shop Shark
Can't be the hose unless they expand indefinitely like giant balloons.

Re: ‘59 235 Low Oil Pressure [Re: Phak1] #1333044 Fri Nov 08 2019 11:15 PM
Joined: Feb 2019
Posts: 377
P
Phak1 Offline OP
Shop Shark
Your funny! I meant the fittings! LOL


Phil

1952 Chevrolet 3100 w/‘59 235 & hydraulic lifters
“Three on the Tree” & 4:11 torque tube
12v w/ Alternator
Re: ‘59 235 Low Oil Pressure [Re: Phak1] #1333080 Sat Nov 09 2019 05:18 AM
Joined: Mar 2019
Posts: 385
G
glenns towing Offline
Shop Shark
Did the pressure go up without the filter and hose?

Re: ‘59 235 Low Oil Pressure [Re: Phak1] #1333085 Sat Nov 09 2019 08:33 AM
Joined: Feb 2004
Posts: 19,261
H
Hotrod Lincoln Offline
Boltergeist
Are you using an original-type canister filter, or some type of modern spin-on filter adapter? Original Fram or AC filter housings have the restrictor orfice built into the center standpipe and no further flow control is required. Some sort of Mickey Mouse spin-on setup will dump practically all the oil back into the pan and destroy the bearings due to lack of lube unless you install a restrictor orfice. I use a Holley carburetor main jet since I've got about a hundred of them left over from my round track racing days.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: ‘59 235 Low Oil Pressure [Re: Phak1] #1333095 Sat Nov 09 2019 01:24 PM
Joined: Feb 2019
Posts: 377
P
Phak1 Offline OP
Shop Shark
It appears to be an original housing but there are no markings or logo’s on it. I looked thru the center tube and it does not have any restriction. The only restriction that I can see is the 1/8” NPT hose barb fittings. That restricts it down to maybe 3/16”. If I remember correctly, were looking for 1/16”. Please correct me it that is wrong.

Would it be better to add a restrictor so the canister is at full pressure (installed in the outlet) or in the inlet. I would suspect installing it in the inlet would reduce the pressure in the canister.

I haven’t run the engine yet because I didn’t have any 1/8” pipe plugs. I got them now so today I should have some answers.

HRL, its great to see your pecking away on the keys! Hope you op was a sucess!

Attached Files
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Last edited by Phak1; Sat Nov 09 2019 01:26 PM.

Phil

1952 Chevrolet 3100 w/‘59 235 & hydraulic lifters
“Three on the Tree” & 4:11 torque tube
12v w/ Alternator
Re: ‘59 235 Low Oil Pressure [Re: Phak1] #1333098 Sat Nov 09 2019 01:41 PM
Joined: Feb 2004
Posts: 19,261
H
Hotrod Lincoln Offline
Boltergeist
You're looking in the wrong place. About 2/3 of the way up the standpipe there will be a hole drilled through the side of the pipe. The rubber rings on the top and bottom of the filter cartridge seal against the tube, and the cover bolt plugs the top. The small hole in the side of the standpipe is the ONLY way oil can get to the bottom of the tube and out the drain hose. Even if the hoses get hooked up backwards, the restrictor still works. Smart folks, those engineers- - - - - -they made those things idiot-proof!

One-handed keyboarding sucks!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: ‘59 235 Low Oil Pressure [Re: Phak1] #1333102 Sat Nov 09 2019 02:14 PM
Joined: Feb 2019
Posts: 377
P
Phak1 Offline OP
Shop Shark
Well, Jerry, your right again. I was looking in the wrong spot and the standpipe does have a tiny hole in it. I’ll still plug the holes and run without the filter until I get the proper hoses, but I don’t suppose that will change the low oil pressure issue. I have a spare gauge so I’ll hook that up to check the dash gauge.

Where do I go from here?


Phil

1952 Chevrolet 3100 w/‘59 235 & hydraulic lifters
“Three on the Tree” & 4:11 torque tube
12v w/ Alternator
Re: ‘59 235 Low Oil Pressure [Re: Phak1] #1333103 Sat Nov 09 2019 02:20 PM
Joined: Mar 2019
Posts: 385
G
glenns towing Offline
Shop Shark
Hmmm. Well if you dont think that will help the oil pressure problem, then why are you dealing with it? If the problem is with the filter, hoses, or the restrictor then your oil pressure reading should be reading much higher when they parts are bypassed or eliminated.. ohwell

Re: ‘59 235 Low Oil Pressure [Re: Phak1] #1333110 Sat Nov 09 2019 04:40 PM
Joined: Feb 2004
Posts: 19,261
H
Hotrod Lincoln Offline
Boltergeist
I believe I've suggested running the oil pump with a 1/2" drill motor to see how much pressure builds up. You need to have a known accurate gauge plumbed directly into the oil gallery port instead of the line to the dash while running this test. These procedures NEVER change, no matter how much wishful thinking gets done, and I get very frustrated explaining them over and over. That's particularly true when my right hand is wrapped up like a mummy clear to my elbow and I'm having to correct dozens of typos caused by keyboarding left-handed only!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: ‘59 235 Low Oil Pressure [Re: Phak1] #1333184 Sun Nov 10 2019 03:20 AM
Joined: Feb 2019
Posts: 377
P
Phak1 Offline OP
Shop Shark
I installed the pressure gauge In the fitting where the inlet line to the oil filter was installed and ran the engine for about 30 minutes and once the engine came up to temperature, the oil pressure dropped to about 5 lbs. at idle. The dash gauge and the temporary gauge were the same. This appears to be a little bit higher than before, but still too low. I’ll keep the filter off until I solve this mystery.

I still want to take her out for a run to verify my results. Further troubleshooting is warranted.

Will the oil supply to the rockers effect the pressure?

Last edited by Phak1; Sun Nov 10 2019 03:21 AM.

Phil

1952 Chevrolet 3100 w/‘59 235 & hydraulic lifters
“Three on the Tree” & 4:11 torque tube
12v w/ Alternator
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