[Healeys] Oil Pressure and replacing the oil pump

[Michael Salter]

 *"(All of which begs the question as to why BMC switched from one to
t’other!)"*
I recall reading in a TSB that the change was made because it was found
that the "rotor" pump was causing cam gear failures...

M

On Mon, Dec 30, 2019 at 2:05 PM <simon.lachlan at alexarevel.plus.com> wrote:

> Me too. DW “High Capacity” type pump which is their version of the older
> “rotor” type pump. It does a good job.
>
> The newer pumps are “Gear” type.
>
> I gathered, from people who know about these things, that the High
> Capacity is best all round and the Rotor only comes into its own at high
> revs.
>
> (All of which begs the question as to why BMC switched from one to
> t’other!)
>
> As to County, don’t know if they’ve attempted an oil pump. Their water
> pump is an inferior item, for sure. I studied Michaels’ blog on the topic
> and stripping down both original types and one County absolutely confirms
> what he says.
>
> Simon
>
>
>
> *From:* Healeys <healeys-bounces at autox.team.net> *On Behalf Of *Bruce
> Steele
> *Sent:* 30 December 2019 16:53
> *To:* 'Michael Salter' <michaelsalter at gmail.com>; 'Robert Begani' <
> rfbegani at gmail.com>
> *Cc:* healeys at autox.team.net
> *Subject:* Re: [Healeys] Oil Pressure and replacing the oil pump
>
>
>
> I installed Denis Welch push rods, along with the DWR-1 cam and hollow
> lifters, when my engine was done.  I also run a DWR high capacity oil
> pump.  I run around 40 pounds at speed.
>
>
>
> Bruce Steele
>
> Brea, CA
>
> 1960 BN7
>
>
>
> *From:* Healeys [mailto:healeys-bounces at autox.team.net
> <healeys-bounces at autox.team.net>] *On Behalf Of *Michael Salter
> *Sent:* Monday, December 30, 2019 6:20 AM
> *To:* Robert Begani <rfbegani at gmail.com>
> *Cc:* healeys at autox.team.net
> *Subject:* Re: [Healeys] Oil Pressure and replacing the oil pump
>
>
>
> Hi Robert, you are the second person that I have heard of who had that
> problem with "cheapo repo" push rods.
>
> It seems that those that are currently available are produced with too
> small a diameter of the cup so they seize on the rocker ball and break off.
>
> I would recommend that you inspect all the rocker ball ends carefully then
> install a set of good used push rods to prevent further problems.
>
>
>
> M
>
>
>
> BTW depending upon who supplied the bad parts you may be able to recover
> the costs involved.
>
>
>
> On Mon, Dec 30, 2019, 12:55 AM Robert Begani, <rfbegani at gmail.com> wrote:
>
> When I rebuilt the engine last year I did not replace the oil pump because
> I had good oil pressure.  Currently, from time to time, while breaking in
> the engine I am driving the car round trip 20-30 miles down the Tamiami
> Trail which is an open road for that stretch..  On a recent trip, the
> weather was cool, so the oil pressure was running 35 to 40 psi while the
> engine temperature was going up to 180 at 3000 rpm.  At 4000 rpm the
> temperature climbed over 180 degrees and the oil pressure dropped below 30
> psi. .  I am considering replacing the oil pump and remember that there is
> a discussion about the quality of Moss pumps.  Maybe I should buy the
> rebuild kit and change gears?
>
>
>
> Oh by the way, on the last run all hell broke loose and had the car towed
> home.  Seems the mushroom on top of one of the push rods broke.  So I am
> replacing all 12 of them.
>
>
>
> Regards,
>
>
>
> Bob Begani
>
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