> Excellent news Paul!
> I'd still bleed the guage line.
> Funny how these same oil pressure issues occur AFTER a piston/ ring
> blowup; and funny how the oil pressure relief valve is positioned
> before the filter......
> There still could be crap in the line...
> ;-)
> Best
> Chris
>
> Begin forwarded message:
>
>> From: Chris Dimmock <austin.healey@gmail.com>
>> Date: 30 September 2010 1:28:36 AM AEST
>> To: Paul Leeks <Paull@glasgows.co.uk>
>> Subject: Re: [Healeys] oil pressure relief valve
>>
>
>> Hi Paul,
>> Ok. Possibly you have some rubbish from the blown piston stopping
>> the oil pressure relief valve from sealing.
>> Undo the nut, remove the spring and valve. Look at the valve and
>> see if it is sealing. A light gray circle like on an inlet valve
>> seat.
>> Let me know.
>> Chris
>> On 30/09/2010, at 1:21 AM, "Paul Leeks" <Paull@glasgows.co.uk> wrote:
>>
>>> Thanks Chris
>>> It was more of a partial (and amateur!) rebuild. I blew a piston,
>>> so removed the head, cleaned up, replaced the pistons and exhaust
>>> valves and put it all
>>> back together (with the original bearings). Not one for the
>>> purist I suspect :-)
>>> Best wishes
>>> Paul
>>>
>>> -----Original Message-----
>>> From: Chris Dimmock [mailto:austin.healey@gmail.com]
>>> Sent: 29 September 2010 16:07
>>> To: Paul Leeks
>>> Subject: Re: [Healeys] oil pressure relief valve
>>>
>>> Hi Paul, What parts did you rebuild/ replace if you didn't remove
>>> the
>>> oil pressure relief spring/ valve?
>
>>>
>>> On 30/09/2010, at 12:52 AM, "Paul Leeks" <Paull@glasgows.co.uk>
>>> wrote: Robert
>>>> Yes, I had more oil pressure before the rebuild but I didn't
>>>> touch (let alone
>>>> change) the oil pressure relief value/spring. Now the pressure
>>>> is low, so I suppose, if it is the OPRV, then it must be due to
>>>> it becoming
>>>> blocked or
>>>> stuck rather than wear?
>>>>
>
> On 04/10/2010, at 7:24 PM, "Paul Leeks" <Paull@glasgows.co.uk> wrote:
>
>> 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
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