[Healeys] oil pressure relief valve

[Robert Blair]

Sorry - I disagree.  No air should be in the guage oil line - by design.













Robert N. Blair
  Yellow 65BJ8
  RNBmail at yahoo.com

 



--- On Thu, 9/30/10, warthodson at aol.com <warthodson at aol.com> wrote:


From: warthodson at aol.com <warthodson at aol.com>
Subject: Re: [Healeys] oil pressure relief valve
To: coudesluijs at chello.nl, rnbmail at yahoo.com
Cc: Mark at autox.team.net, healeys at autox.team.net
Date: Thursday, September 30, 2010, 2:45 PM



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 at chello.nl>
To: Robert Blair <rnbmail at yahoo.com>
Cc: Mark at autox.team.net; healeys at 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
to be instant and precise so no volume of air to compress can be allowed
as that would take to much travel from the brake pedal. The brake force
in relation to the force applied to the pedal would not change, although
you will never reach a decent force as the brake pedal cannot travel far
enough. In a pressure gauge it does not matter how much oil flows in the
line, there is plenty of it so with or without the air it will always
indicate the same pressure: the pressure the oil pump is delivering or
rather the opening pressure of the relief valve.
However I can imagine that without air in the line the gauge may vibrate
depending on the design of the oil pump.
Kees Oudesluijs.
NL