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Re: [Healeys] Oil Pumps

To: "'Bob Spidell'" <bspidell@comcast.net>, <healeys@autox.team.net>
Subject: Re: [Healeys] Oil Pumps
From: "John Spaur" <jmsdarch@sbcglobal.net>
Date: Wed, 1 Jan 2020 13:39:55 -0800
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <CAKkXjqMFR+ixUefxdwoBxGm-bsGUvoPkMtG0rYHSE1uNDE2VsA@mail.gmail.com> <964ba385-df70-a261-0129-63f4df053a8e@comcast.net> <768eabb0-d8c1-c553-90e5-a924fe4277dc@cosmos.net.au> <007601d5c0d1$2c534450$84f9ccf0$@sbcglobal.net> <6f7a0aa8-7af9-674a-a667-82d92721f6a4@comcast.net>
Thread-index: AQMOZ2DN5DLKizrix/z+QqWfYhiTwgI06QWHAmZ5OywBj0c/cQGa7cZmpSa/4PA=
Bob,

I think it was calibrated when I had the gauges rebuilt. The oil pressure is 
fine.

Happy New Year!

John

-----Original Message-----
From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of Bob Spidell
Sent: Wednesday, January 1, 2020 10:34 AM
To: healeys@autox.team.net
Subject: Re: [Healeys] Oil Pumps

John,

Have you checked against a calibrated gauge (or had your own 
adjusted/calibrated)?  My BJ8 showed zero pressure at idle when I bought it, 
but having the safety gauge adjusted 'added' 15-20psi at idle.

Bob

On 1/1/2020 10:27 AM, John Spaur wrote:
> My '62 BT7 has a stock oil pump and the indicated oil pressure always reads 
> very low, 20 psi if I recall correctly, when the engine is up to operating 
> temperature. I think this has been an issue with the car and a discussion 
> topic for eons. I have never experienced a problem or issue with the oil 
> pressure or the value stated on the gauge. Are people experiencing engine 
> issues because of this?
>
> John Spaur
> San Jose
>
> -----Original Message-----
> From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of 
> Larry Varley
> Sent: Tuesday, December 31, 2019 9:03 PM
> To: healeys@autox.team.net
> Subject: Re: [Healeys] Oil Pumps
>
> As a matter of interest the rotary oil pump is from the Austin A70 2.2 litre 
> engine, same rotor. Then when the 2.6 litre engine was produced for the 
> Healey 100 Austin changed the pumps to the gear type. Probably because the 
> gear type pumps less oil and they knew the cars would be revved harder. In an 
> A70 and 100 engine the rotary pump will produce up to 80 PSI oil pressure and 
> around 3000 engine revs, where the gear pump will produce about 60 PSI with 
> the same bypass spring. This shows the rotary pump has a far greater output. 
> Austin may have changed the pump running speed when they fitted the rotary 
> pump to the six cylinder cars, I don't know. Austin A70's have no problem 
> with 80 PSI oil pressure, but then we all know the 6 cylinder engine was an 
> inferior design   :)) Cheers Larry Varley 
> _______________________________________________
>
>

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