I've never seen these gauge pulsations. However, I have often loosened the
fitting at the gauge on initial start up until oil appears, to get a good
reading. More than once, prior to bleeding off the air, I have seen
excessive pressure indicated at the gauge (80 to 90 PSI) until I bled the
air off, then got a good normal reading with relief pressures about 60 to 65
PSI.
I know this sounds opposite to the "air pocket needed" theory, but that's
been my experience.
Rich
--------------------------------------------------
From: <warthodson@aol.com>
Sent: Thursday, September 30, 2010 5:45 PM
To: <coudesluijs@chello.nl>; <rnbmail@yahoo.com>
Cc: <healeys@autox.team.net>; <Mark@autox.team.net>
Subject: Re: [Healeys] oil pressure relief valve
> I agree. And as I recall 6 cylinder Healeys had two different oil pump
> designs. Perhaps one design produces bigger pulsations.
> Gary Hodson
>
>
>
>
>
>
> -----Original Message-----
> From: Oudesluys <coudesluijs@chello.nl>
> To: Robert Blair <rnbmail@yahoo.com>
> Cc: Mark@autox.team.net; healeys@autox.team.net
> Sent: Thu, Sep 30, 2010 3:59 pm
> Subject: Re: [Healeys] oil pressure relief valve
>
>
> I disagree. In a braking system the transmission of force/pressure has
> o be instant and precise so no volume of air to compress can be allowed
> s that would take to much travel from the brake pedal. The brake force
> n relation to the force applied to the pedal would not change, although
> ou will never reach a decent force as the brake pedal cannot travel far
> nough. In a pressure gauge it does not matter how much oil flows in the
> ine, there is plenty of it so with or without the air it will always
> ndicate the same pressure: the pressure the oil pump is delivering or
> ather the opening pressure of the relief valve.
> owever I can imagine that without air in the line the gauge may vibrate
> epending on the design of the oil pump.
> ees Oudesluijs.
> L
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