Paul, Good news....
So Mr Leeks, you had a leak - a bad relief valve seating [if I am reading it
correctly] is a system leak which will lower sustained pressure, as the valve
could not fully close to support 60psi at the bearings.
What a great thread this has been :-)
Robert N. Blair Yellow 65BJ8 RNBmail@yahoo.com
--- On Mon, 10/4/10, Paul Leeks <Paull@glasgows.co.uk> wrote:
> From: Paul Leeks <Paull@glasgows.co.uk>
> Subject: [Healeys] I've got my pressure back!
> To: healeys@autox.team.net
> Date: Monday, October 4, 2010, 1:24 AM
> Chaps
>
>
>
> I am delighted to report that I have got my oil pressure
> back!
>
>
>
> For the record ...
>
> I checked the oil filter which was oily but clean.
>
> I checked the oil pump sieve which was bit mucky.
>
> I checked the oil pump which was as clean as a whistle.
>
> I checked the oil pressure relief valve, and the cap was
> covered with little
> bits of blown piston (see previous post).
>
>
>
> All cleaned up and put back together and the new scores
> are:
>
> 55psi @ 4,000 rpm
>
> 50psi @ 3,000 rpm
>
> 40psi @ 2,000 rpm
>
> 25psi @ idle (700 rpm)
>
>
>
> In addition, I have now lost the machine gun rat-a-tat
> under load (probably
> the result of tappets previously running dry?)
>
>
>
> So many thanks to absolutely everybody for all their help!
>
>
>
> Paul Leeks
>
> 100/6 BN 4
>
>
>
> PS
>
> As everything now seems fine, I have decided to leave the
> oil gauge well
> alone!
>
> So, having set this one in motion, I'm afraid I can longer
> contribute to the
> "to bleed or not to bleed" question
>
> ... sorry Ed :-)
>
>
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