[Healeys] Oil Pump

[Michael Salter]

Hi Jonas, failure of the cam and lifters in any engine can have some very
nasty consequences. The flakes of metal shed from the cam are typically very
hard and invariably manage to get past the oil filter and eventually travel
with the oil to every bearing surface in the engine.
My experience has been that to avoid damage to the rebuilt engine it is
essential that every oil gallery plug is removed from the block and the head
and the galleries are thoroughly flushed; I found this out the hard
(expensive) way!!!

Michael S
BN1 #174

-----Original Message-----
From: "Jonas Payne" <jpaynepbr at cox.net>
Sent: b6/b03/b2014 8:51 a.m.
To: "healeys at autox.team.net" <healeys at autox.team.net>
Subject: [Healeys] Oil Pump

We are rebuilding the engine from a '61 AH 3000.



While the tolerances on the old pump check out (per my machinist) , the
owner of the car was complaining of low oil pressure (40 psi running, 20 PSI
at idle).  There was nothing on the top or bottom end suggested major
problems to the main or rod bearings nor the typical rockershaft issues.



Effectively, the cam and lifters failed and the valves and guides were shot
on the motor.



All of that said, there are some options for the oil pump as follows:



Replace with new gear type - readily available.

Replace with original style vane type - on backorder with all known
suppliers with no delivery date in site.

Re-use the old pump as is

Obtain a re-built pump (I have no idea where I'd have this done)



I was told that the gear type makes pressure at high rpm and the vane style
at low rpm - if this is true, given this owner's driving style, I'm not sure
that a high rpm pump is the best way to go.



Jonas Payne

PBR Consulting Services, LLC

702.882.6711
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