Engine and Transmission Tech

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

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302GT
Larry Shimp

(226 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
(2277 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
(219 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
(4327 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
(4327 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.



TVR_V8
Michael Stein
Germany
(1 posts)

Registered:
12/11/2021 02:44PM

Main British Car:
TVR Vixen V8 Oldsmobile 215 Stroker 4.6

Re: No oil pressure on rebuilt 215
Posted by: TVR_V8
Date: December 23, 2021 01:43PM

Hi Jerry,

what happened to the oil pressure problem? I am struggling with similar symptoms and cannot find a solution. Mybe i can learn from you

I'm looking forward to an answer,

Michael


88v8
Ivor Duarte
Gloucestershire UK
(1001 posts)

Registered:
02/11/2010 04:29AM

Main British Car:
1974 Land Rover Lightweight V8

Re: No oil pressure on rebuilt 215
Posted by: 88v8
Date: December 28, 2021 04:54AM

What indeed... too often on forums one sees the problems but the OP forgets to post the solution. Been there done that.

Is the pump priming OK? Flow but low pressure?
One thing I never mentioned, if the pump won't prime then all the time it's being rotated with the drill the steel gears are rubbing dry against the alloy cover, and they can wear a nice circular gouge in it.

So a pre-oiler as mentioned by Todd on page 1 is well worth setting up to avoid this.

Ivor


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6274 posts)

Registered:
10/23/2007 12:59PM

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

authors avatar
Re: No oil pressure on rebuilt 215
Posted by: BlownMGB-V8
Date: December 28, 2021 01:56PM

Either take the cover to the shop and have them cut .020" off the mating flange or some very careful work with a belt sander, a micrometer, and a large new fine cut file. Then use the TA shim pack to set end clearance to about .0005" and pack with vasoline before startup. A little porting and polishing helps.

Jim
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