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Author
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Topic: Oil pressure?
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Stang28965
Gearhead Posts: 353
From: Webster New York USA
Registered: Mar 2001
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posted 08-19-2001 08:50 AM
   
My...[This message has been edited by Stang28965 (edited 05-25-2002).]
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SteveLaRiviere
Administrator Posts: 24286
From: Saco, Maine Toys: '70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150
Registered: May 99
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posted 08-19-2001 11:33 AM
Are you measuring it with a factory gauge? They are not very accurate, you know.------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC
Ford. The closer you look, the better WE look!
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Stang28965
Gearhead Posts: 353
From: Webster New York USA
Registered: Mar 2001
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posted 08-19-2001 12:39 PM
.[This message has been edited by Stang28965 (edited 05-25-2002).]
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SteveLaRiviere
Administrator Posts: 24286
From: Saco, Maine Toys: '70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150
Registered: May 99
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posted 08-19-2001 12:44 PM
Is it a new engine?------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC
Ford. The closer you look, the better WE look!
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mellowyellow
Gearhead Posts: 4608
From: So. Fl.
Registered: Aug 2000
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posted 08-19-2001 01:33 PM
Steve's right. I had bought a 66 cv that was weak on oil pressure and it was priced accordingly. A friend came over with a guage which we hooked up and it was adequate. Changed the whole cluster and it was ok. Might not always work out but it did on that car.
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camachinist
Gearhead Posts: 102
From: Fresno,CA,USA
Registered: May 2000
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posted 08-19-2001 02:13 PM
Stang28965IME, that's a bit high, especially for a warm engine.... The only plausible reason I can think of, if the engine runs fine with no noises, is that the main and rod clearances were set a bit on the tight side. Less space for the oil to exit through, the more goes through the pressure relief.... Tell us what you know about the engine and approximately how many miles or hours it has been in service.... Pat
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Stang28965
Gearhead Posts: 353
From: Webster New York USA
Registered: Mar 2001
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posted 08-19-2001 04:26 PM
.[This message has been edited by Stang28965 (edited 05-25-2002).]
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SteveLaRiviere
Administrator Posts: 24286
From: Saco, Maine Toys: '70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150
Registered: May 99
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posted 08-19-2001 04:45 PM
Then I think it's tight clearances. If it's not running hot, I wouldn't worry about it. I'd consider running a thinner oil.------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC
Ford. The closer you look, the better WE look!
IP: Logged |
Stang28965
Gearhead Posts: 353
From: Webster New York USA
Registered: Mar 2001
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posted 08-19-2001 04:52 PM
.[This message has been edited by Stang28965 (edited 05-25-2002).]
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SteveLaRiviere
Administrator Posts: 24286
From: Saco, Maine Toys: '70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150
Registered: May 99
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posted 08-19-2001 05:24 PM
You could try 5W-30 or even 0W-30.I wouldn't worry at all. The 351C in my Sprint runs at 75-80 psi, too. ------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC
Ford. The closer you look, the better WE look!
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unklshu
Gearhead Posts: 642
From: San Bernardino, Ca
Registered: Jul 2001
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posted 08-20-2001 12:17 AM
28965, I'm running a high volume oil pump and my gauges read 45 at idle to 90 at about 4000rpms but I don't ever recalling it running any higher. At regular engine rpms it hangs out at 80. are you sure you don't have a high volume oil pump in the engine?? Maybe you can ask the person who built it.joe
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unklshu
Gearhead Posts: 642
From: San Bernardino, Ca
Registered: Jul 2001
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posted 08-20-2001 12:26 AM
Also, you say your running an aftermarket oil pressure gauge, be sure you toss out that plastic tubbing cra*. It will get hard and crack on you. Get some brass tubbing of the same diameter and use it instead it will last at least 10 years+. Mine has yet to failand it is at least that long.joe
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Stang28965
Gearhead Posts: 353
From: Webster New York USA
Registered: Mar 2001
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posted 08-20-2001 10:27 AM
.[This message has been edited by Stang28965 (edited 05-25-2002).]
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lyle29464
Gearhead Posts: 517
From: Mt. Pleasant S.C. C. S. A.
Registered: Mar 2000
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posted 08-22-2001 09:03 PM
I would try a mechanical gauge. If that reads lower I would check to see if your sending unit is a miss match or has a poor ground. (tape will do that. It would be ez to ground your sending unit case to the block.
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