Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

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ex-tyke
Graham Creswick
Chatham, Ontario, Canada
(1165 posts)

Registered:
10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: High Oil Pressure
Posted by: ex-tyke
Date: June 14, 2014 09:12PM

Quote:
Cannot figure out why after warm up the pressure dropped so low though...

A drop of 10psi from cold to hot running oil pressure is quite normal.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6469 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

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Re: High Oil Pressure
Posted by: BlownMGB-V8
Date: June 15, 2014 02:53PM

Rule of thumb for Buicks is 10 psi per 1000 rpms.


Dukebloodhound
Jeffrey Landry

(18 posts)

Registered:
04/24/2014 02:56PM

Main British Car:
Re: High Oil Pressure
Posted by: Dukebloodhound
Date: June 28, 2014 01:45PM

Hi Guys,
I was talking about the original pressure issue that I had-high pressure at first, till warm up, than almost no pressure after that. 2-3 lbs when above idle.
Since I cut the pressure relief valve spring down, I have not had the low pressure. Besides a drop as the oil heats up and thins out
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