[Healeys] oil pressure relief valve

[Mark LaPierre]

And what kind of oil pressure might you be running in your gem.

Mark

----- Original Message ----- 
From: <bighealey3k at aim.com>
To: <sbyers at ec.rr.com>; <healeys at autox.team.net>
Sent: Wednesday, September 29, 2010 12:56 PM
Subject: Re: [Healeys] oil pressure relief valve


>I agree with Steve, the column of air in the oil pressure line needs to be
> there to dampen out the oil pump pulses.  I addressed this issue back on 
> Aug
> 6th in a reply to the list and David Masucci who had an "oscillating" oil
> pressure gauge and he thought air in the line caused it.  I related to him 
> and
> the list how my '67 BJ8 that I've owned since new and know that the oil 
> line
> had never been disconnected from the engine or oil pressure gauge since 
> new
> and I was driving in traffic and all of a sudden my oil pressure gauge 
> started
> to vibrate and the needle oscillated very rapidly and I noticed a drop of 
> oil
> on my left pant leg.  I looked at the back of the gauge and saw a drop of 
> oil
> hanging on the nut that attached the direct reading oil line to the back 
> of
> the gauge.  I tightened the nut and it did not help.  I guessed there must
> have been a column of air in the line that was lost due to the nut at the 
> back
> of the gauge not being tight enough.  I took the line loose at the engine 
> and
> gauge and blew out the line and reconnected both ends and the problem 
> cleared
> up and has never reoccurred since and that was back in '69 or '70.  There 
> is a
> small pin hole in the fitting to the back of the oil pressure gauge that
> dampens the pressure entering the gauge and I'm guessing the hole can't 
> dampen
> the oil pump pulses with a column of oil directly at the back of the 
> gauge.
> The column of air does the dampening and smoothes out the pulses.
>
> Larry
> '67 BJ8
>
>

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