<div dir="ltr"><div>Word to the wise.</div>I recently installed a new County oil pump in my AH 3000. The engine builder took the brand new pump apart to inspect and found a significant amount of flashing from the housing casting inside the pump. The pump housing was cleaned up with a small die grinder and reassembled. The flashing was both impeding flow and could have easily come loose at some point.<div><br></div><div>Oil pressure on the finished engine is good. Whatever pump you buy, take it apart for inspection first.</div><div><br></div><div>Harold</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 22, 2023 at 8:30 AM Kees Oudesluijs via Healeys <<a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>You do not want a higher than standard oil pressure for normal
use but extra oil flow is never a bad thing in a hot engine. If
you fit a high volume pump you will get a higher oil pressure and
you have to reduce the oil pressure to standard by fitting a
weaker spring or adjusting the spring tension if possible.</p>
<p>Failing to do that may lead to the earlier mentioned damage to
the cam wheel and perhaps some other parts.</p>
<p>Kees Oudesluijs</p>
<p><br>
</p>
<p><br>
</p>
<div>Op 22-2-2023 om 16:14 schreef Simon
Lachlan via Healeys:<br>
</div>
<blockquote type="cite">
<div>
<p class="MsoNormal"><span>I
fitted the Welch “High Capacity” pump some years back.
Gained some psi across the range. Only fitted because it
turned up brand new and v.cheap on eBay.<u></u><u></u></span></p>
<p class="MsoNormal"><span>Anyhow,
I dug up the attached which is rather long and rather above
my technical skills or interest….I’d imagine it’s been
around the block a few times so most of you will have it
filed away.<u></u><u></u></span></p>
<p class="MsoNormal"><span>Simon<u></u><u></u></span></p>
<p class="MsoNormal"><span><u></u> <u></u></span></p>
<div>
<div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Healeys
<a href="mailto:healeys-bounces@autox.team.net" target="_blank"><healeys-bounces@autox.team.net></a> <b>On Behalf Of
</b>Bob Spidell<br>
<b>Sent:</b> 22 February 2023 14:08<br>
<b>To:</b> <a href="mailto:healeys@autox.team.net" target="_blank">healeys@autox.team.net</a><br>
<b>Subject:</b> Re: [Healeys] Parts from UK BJ8<u></u><u></u></span></p>
</div>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal" style="margin-bottom:12pt">This was news
to me (from Roger Moment's new book; 'engine' section):<br>
<br>
"I have found new gear-type pumps to have one gear a few
thousandths of an inch taller than the other, and neither with
the proper clearance to the bottom cover plate. This required
finding someone with a grinding table who could make the gears
identical, and then also machine the bottom of the pump
housing so that the proper end clearance to the cover plate
would result." I would at least check this on a gear-type
pump.<br>
<br>
The only knock on the vane-type pumps that I've aware of is
that the resistance was so high it would cause the cam gear
driving it to wear and eventually be stripped. I think this
was addressed by adding an extra tooth to the pump driveshaft
driven gear, hence lowering the torque on the gears. I have no
supporting evidence offhand, but I recall reading this
somewhere (now if I could just remember where I put my keys).
<br>
<br>
FWIW, I have about 7K miles on the 'upgraded'--presumably
rotary-type--pump from DWM in my BJ8 and my oil pressure is
stable, and no metal in the oil. I believe the gear-type
pump's gears are made of sintered iron; which I recall from
long ago caused problems in some aircraft piston
engines--Lycomings* IIRC--and I've never really trusted them
since (though my Mustang GT with 475HP has a pump with
sintered gears with no issues that I know of, but aftermarket
vendors offer ones with machined gears for boosted engines).<br>
<br>
Side note: When my dad was a factory rep for Ford back in the
sixties, he said owners would bring their cars in because 'The
oil pressure drops at idle.' Possibly one reason why
manufacturers went to idiot lights, though I suspect cost was
the major factor.<br>
<br>
<br>
* <a href="https://www.knr-inc.com/shop-talk-articles.html?id=101:200110-lycoming-oil-pumps&catid=25" target="_blank">https://www.knr-inc.com/shop-talk-articles.html?id=101:200110-lycoming-oil-pumps&catid=25</a><br>
<br>
<br>
<u></u><u></u></p>
<div>
<p class="MsoNormal">On 2/21/2023 11:18 PM, Alan Seigrist via
Healeys wrote:<u></u><u></u></p>
</div>
<blockquote style="margin-top:5pt;margin-bottom:5pt">
<div>
<p class="MsoNormal">As I understand it, the rotary vane was
much better for maintaining pressure at low rpms, which is
good for a road car.<u></u><u></u></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">On Wed, Feb 22, 2023 at 2:18 PM
Ricchardd Mayor <<a href="mailto:boyracer466@gmail.com" target="_blank">boyracer466@gmail.com</a>>
wrote:<u></u><u></u></p>
</div>
<blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm">
<div>
<p class="MsoNormal">The rotary vane pump was used in
the 100/6 - 26D - engines. It caused many problems.
It is not suitable for any use, contrary to what
someone may be trying to sell you. <u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal" style="margin-bottom:12pt">Richard Mayor<br>
<a href="mailto:boyracer466@gmail.com" target="_blank">boyracer466@gmail.com</a><u></u><u></u></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<blockquote style="margin-top:5pt;margin-bottom:5pt">
<div>
<p class="MsoNormal">On Feb 21, 2023, at 7:35
PM, Alan Seigrist <<a href="mailto:healey.nut@gmail.com" target="_blank">healey.nut@gmail.com</a>>
wrote:<u></u><u></u></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">As I understand it, the
rotary vane pump is superior for road
applications, gear pump superior for racing
applications. <u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">On Wed, Feb 22, 2023 at
11:32 AM Ricchardd Mayor <<a href="mailto:boyracer466@gmail.com" target="_blank">boyracer466@gmail.com</a>>
wrote:<u></u><u></u></p>
</div>
<blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm">
<div>
<p class="MsoNormal">Bob, The brand name
is “County” ….. not “Country”. Whatever
brand you buy just be sure it is the
gear style oil pump. <u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal" style="margin-bottom:12pt">Richard Mayor<br>
<a href="mailto:boyracer466@gmail.com" target="_blank">boyracer466@gmail.com</a><u></u><u></u></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<blockquote style="margin-top:5pt;margin-bottom:5pt">
<div>
<p class="MsoNormal">On Feb 21,
2023, at 6:49 PM, Alan Seigrist
<<a href="mailto:healey.nut@gmail.com" target="_blank">healey.nut@gmail.com</a>>
wrote:<u></u><u></u></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">Not sure
why but Longstone Tyres in the
UK has crazy good shipping
rates. It's not the same with
anyone else.<br>
<br>
Generally speaking when
ordering parts from the UK, it
seems to add about 30% to the
total price. I have had
better luck with DHL or Royal
Post shipping for reliability
of delivery in the past...
seems customs works in
concert with USPS & DHL
(Deutsche Post) to protect
USPS, so FedEx and UPS
sometimes can get hung up in
customs. It may have
improved, not sure....<u></u><u></u></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">On Wed,
Feb 22, 2023 at 3:31 AM <<a href="mailto:rfbegani@gmail.com" target="_blank">rfbegani@gmail.com</a>> wrote:<u></u><u></u></p>
</div>
<blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<div>
<p class="MsoNormal"><span style="font-size:16pt;font-family:Arial,sans-serif" lang="EN-US"> </span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:16pt;font-family:Arial,sans-serif" lang="EN-US">I have
decided to replace
my oil pump and my
rear bumper. I
remember you all
seem to say that
Moss pumps are from
country and are not
satisfactory, and we
should buy from the
UK such as Dennis
Welch. </span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:16pt;font-family:Arial,sans-serif" lang="EN-US"> </span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:16pt;font-family:Arial,sans-serif" lang="EN-US">Also,
have decided to
replace my original
real bumper because
it is scratched and
blackened in places.</span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:16pt;font-family:Arial,sans-serif" lang="EN-US"> </span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:16pt;font-family:Arial,sans-serif" lang="EN-US">Also,
as the pound is 1.21
to the dollar the
parts from DM are
almost ½ price from
Moss and others. My
experience with UK
on buying Michelin
Tires was great
because freight
charges via HM Post
is very inexpensive
and direct to my
door. Is DM freight
similar?</span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:16pt;font-family:Arial,sans-serif" lang="EN-US"> </span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:16pt;font-family:Arial,sans-serif" lang="EN-US">Bob
Begani</span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:16pt;font-family:Arial,sans-serif" lang="EN-US">67 BJ8
</span><span lang="EN-US"><u></u><u></u></span></p>
</div>
</div>
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