Engine and Transmission Tech

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

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302GT
Larry Shimp

(215 posts)

Registered:
11/17/2007 01:13PM

Main British Car:
1968 MGB GT Ford 302 crate engine

authors avatar
Re: No oil pressure on rebuilt 215
Posted by: 302GT
Date: May 04, 2020 02:46PM

Did you find oil in the pump after spinning it? if so, maybe the relief valve is leaking, if not there is a leak on the suction side.


62Healeyhacker
Jerry Jackman

(17 posts)

Registered:
04/11/2009 10:58PM

Main British Car:


Re: No oil pressure on rebuilt 215
Posted by: 62Healeyhacker
Date: May 22, 2020 01:32PM

I unscrewed the relief valve nut. I replaced the washer with a fiber one and compressed the spring and tightened the nut. The engine has not cranked very quickly. Timing light showed only weak spark. The battery date says 09/2016 so I am replacing it today.


62Healeyhacker
Jerry Jackman

(17 posts)

Registered:
04/11/2009 10:58PM

Main British Car:


Re: No oil pressure on rebuilt 215
Posted by: 62Healeyhacker
Date: June 02, 2020 02:18PM

I have continued to chase the "no oil pressure demon" without success. I have just pulled the new cover I bought from Silver Seal and measured the depth of the pump chamber. My rough measurement is 0.890. I also measured the chamber depth in the old (1961-63) cover which reads 0.875!
I have never heard of any of these Buick v8 or v6 engines having an altered depth in the pump chamber. This explains why the pump gear is slightly below chamber level whereas originally the gears extended slightly,
This also explains why I have never gotten ANY oil pressure despite checking out all the possibilities you guys have suggested.

Am I the only forum member who has encountered this problem? If you had this problem how did you rectify it? Any thoughts, suggestions are appreciated.


mgb260
Jim Nichols
Sequim,WA
(2058 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: No oil pressure on rebuilt 215
Posted by: mgb260
Date: June 02, 2020 04:40PM

BuickV8 board mentioned this issue. Gears should stick out slightly. Sand down .015 maybe.


mstemp
Mike Stemp
Calgary, Canada
(207 posts)

Registered:
11/25/2009 07:18AM

Main British Car:
1980 MGB Rover 4.6L

Re: No oil pressure on rebuilt 215
Posted by: mstemp
Date: June 02, 2020 09:30PM

Jerry,

Please go back to page one of this thread and read what Roger went through. There is a spec for how much the gears should be proud of the cavity. You needed to measure this long ago to pick the thickness of gasket prior to assembly. Sorry you are finding this out the hard way, many different gasket thickness are in the market and material. Thin ones out of a paper like material donít crush much but thicker ones most certainly do making it hard to pick the correct casket. Easiest to assemble it to make sure gears donít bind in the cover, but not loose to give lower or no pressure. Check out the Buick links listed by Carl etc for further help. They give details on the pump and also porting the cover and pump to help flow/ pressure loss.



Edited 1 time(s). Last edit at 06/03/2020 08:15AM by mstemp.


MGBV8
Carl Floyd
Kingsport, TN
(3980 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: No oil pressure on rebuilt 215
Posted by: MGBV8
Date: June 03, 2020 09:40AM


"I have just pulled the new cover I bought from Silver Seal and measured the depth of the pump chamber. My rough measurement is 0.890. I also measured the chamber depth in the old (1961-63) cover which reads 0.875!
I have never heard of any of these Buick v8 or v6 engines having an altered depth in the pump chamber."


Is your new Silver Seal timing cover a Buick 215 cover or a V6 cover? Did you buy the one that comes with new gears?

Great page with Buick Oiling Mods.

[www.rowand.net]



Edited 2 time(s). Last edit at 06/03/2020 10:11AM by MGBV8.


MGBV8
Carl Floyd
Kingsport, TN
(3980 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
1979 MGB, Buick 215

authors avatar
Re: No oil pressure on rebuilt 215
Posted by: MGBV8
Date: June 03, 2020 09:54AM

Double check that you didn't receive a timing cover for hi volume & are using standard pump gears in it.

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