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It's kinda like blood pressure. Except, lower BP is better.
On 10/30/2018 6:55 PM, Engl wrote:
> Hi Ed
>
> Indeed, oil pressure on your car (still think of it as your car!) is
> great as you indicate.
>
> Bob England
>
> On Oct 30, 2018, at 2:01 PM, E.A. Driver <edriver@sasktel.net
>
>> Good afternoon
>> As with Bruce and Bob at rebuild of a BJ8 engine I added DWR hcpump
>> in 2000, although I sold the car in 2016, I assume the current
>> owner will verify that oil pressure during driving still ranges
>> from 55 to 60 psi and at idle 20-25psi. As Michael has stated if the
>> correct bearing clearances were met during rebuild there should be no
>> issues.
>> Cheers
>> Ed
>>
>> E.A. Driver
>> Web master Saskatchewan British Car Club
>> Saskatoon, Saskatchewan
>> Canada
>>
>>
>> On 30/10/2018 9:52 AM, Bruce Steele wrote:
>>>
>>> I echo Bobâ??s comments. Iâ??ve had the DWR high capacity pump for years.
>>>
>>> Bruce Steele
>>>
>>> Brea, CA
>>>
>>> 1960 BN7
>>>
>>> *From:*Healeys [mailto:healeys-bounces@autox.team.net] *On Behalf Of
>>> *Bob Spidell
>>> *Sent:* Tuesday, October 30, 2018 7:17 AM
>>> *To:* healeys@autox.team.net
>>> *Subject:* Re: [Healeys] oil pump
>>>
>>> I'll offer what I know/have heard*. I have the 'high capacity' type
>>> in my BJ8, which is what the DWR techs/sales people recommended for
>>> a road car. Older 6-cyl cars had a rotor type pump. They (the
>>> rotor type) are supposed to be more efficient--i.e. they pump more
>>> oil--at lower RPMs. At some point it was discovered, probably from
>>> service bay repairs, that this type of pump put an excessive shear
>>> load on the bevel gears on the cam that drive the pump, causing them
>>> to wear out. Later cars started getting the gear type pump, which
>>> is less efficient at lower RPMs but puts less of a load on the cam,
>>> and is probably less expensive to manufacture as well (esp. if the
>>> gears are the sintered iron variety). I think the bevel gears on
>>> the cams were re-engineered, IIRC they got an additional tooth to
>>> spread the load.
>>>
>>> The Welch HC pump is the rotor type. I did a full engine rebuild
>>> and installed the DWR HC pump; I didn't notice any pressure change
>>> worth mentioning--I 'gained' 15 PSI at idle when I had my gauge
>>> overhauled--but the 'high capacity' I believe refers to volume
>>> rather than pressure (which, of course, is mostly dictated by engine
>>> speed).  The 'standard type' pump is a gear type, hence it's more
>>> appropriate for high-RPM race engines as pump flow is proportional
>>> to RPM, and at 6K RPM or more you'll get plenty of oil with less
>>> load from the gear type.
>>>
>>> I'm not positive, but if you look at the photos closely, you can see
>>> the 'gallery plug' on the top of the case. I suppose it allows
>>> inspection of the innards of the pump without having to break the
>>> case. I believe it's threaded so not likely to pop out. If you're
>>> getting a new pump you'll likely need a new drive shaft and,
>>> surprisingly, DWR sells it cheaper than our (US) vendors sell it at
>>> (I think they might import the DWR shaft).
>>>
>>> * apply appropriate grains of salt
>>>
>>> Bob
>>>
>>> On 10/30/2018 5:12 AM, simon.lachlan@alexarevel.plus.com
>>>
>>> Hi,
>>>
>>> Has anyone got the Denis Welch oil pump ENG672M? See:-
>>>
>>>
>>> https://www.bighealey.co.uk/performance-parts/austin-healey/engines/3000-bottom-end?page=3
>>>
>>>
>>> Their text:- â??Heat treated castings for longer life and
>>> removable gallery plugs to be sure it is clean are
>>> advantages of both types of oil pumps we offer. We recommend
>>> the high capacity for all road engines using a standard type
>>> crank up to 6000 rpm and the standard pump for race engines,
>>> steel cranks or anything over 6000 rpm. Both are precision
>>> machined and assembled in-house to control the highest quality.
>>> - ENG672 is the standard type.
>>> - ENG672M is the high capacity pump.â??
>>>
>>> What are â??removable gallery plugsâ???
>>>
>>> Is it just me or is the above a bit counter-intuitive? â??High
>>> capacityâ?? for road cars and â??standardâ?? for race engines? Surely
>>> the highest capacity is needed where the engine is working
>>> hardest ie racing?
>>>
>>> And donâ??t I remember that, with the standard BMC pumps, the
>>> older type is reckoned to be better than the newer type? Is this
>>> something similar to Denis Welchâ??s two pumps?
>>>
>>> Anyhow, if anyoneâ??s got oneâ?¦..whatâ??s it like? Did the oil
>>> pressure improve at all?
>>>
>>> Iâ??m guessing that most people will have fitted one as part of a
>>> big rebuild thus they wonâ??t have straightforward â??before and
>>> afterâ?? comparisons. Iâ??m thinking of fitting mine to my engine as
>>> part of a small winter project and hope I can squeeze a few more
>>> psi into the system.
>>>
>>>
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<p>It's kinda like blood pressure. Except, lower BP is better.<br>
</p>
<br>
<div class="moz-cite-prefix">On 10/30/2018 6:55 PM, Engl wrote:<br>
</div>
<blockquote type="cite"
cite="mid:F1C773BB-6821-4C66-925C-14180077BB0F@accesscomm.ca">
<meta http-equiv="content-type" content="text/html; charset=utf-8">
Hi Ed
<div><br>
</div>
<div>Indeed, oil pressure on your car (still think of it as your
car!) is great as you indicate. <br>
<br>
<div id="AppleMailSignature" dir="ltr">Bob England</div>
<div dir="ltr"><br>
On Oct 30, 2018, at 2:01 PM, E.A. Driver <<a
href="mailto:edriver@sasktel.net";
moz-do-not-send="true">edriver@sasktel.net</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<meta http-equiv="Content-Type" content="text/html;
charset=utf-8">
<div class="moz-cite-prefix">Good afternoon<br>
As with Bruce and Bob at rebuild of a BJ8 engine I added
DWR hcpump in 2000, although I sold the car in 2016, I
assume the current owner will verify that oil pressure
during driving still ranges from 55 to 60 psi and at idle
20-25psi. As Michael has stated if the correct bearing
clearances were met during rebuild there should be no
issues.<br>
Cheers<br>
Ed<br>
<br>
E.A. Driver<br>
Web master Saskatchewan British Car Club<br>
Saskatoon, Saskatchewan<br>
Canada<br>
<br>
<br>
On 30/10/2018 9:52 AM, Bruce Steele wrote:<br>
</div>
<blockquote type="cite"
cite="mid:09e901d47068$8ff0f530$afd2df90$@roadrunner.com">
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<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Trebuchet
MS",sans-serif;color:windowtext">I echo Bobâ??s
comments. Iâ??ve had the DWR high capacity pump for
years.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Trebuchet
MS",sans-serif;color:windowtext"><o:p>Â </o:p></span></p>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Trebuchet
MS",sans-serif;color:#1F497D">Bruce
Steele<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Trebuchet
MS",sans-serif;color:#1F497D">Brea,
CA<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Trebuchet
MS",sans-serif;color:#1F497D">1960
BN7<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Trebuchet
MS",sans-serif;color:windowtext"><o:p>Â </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="color:windowtext">From:</span></b><span
style="color:windowtext"> Healeys [<a
class="moz-txt-link-freetext"
href="mailto:healeys-bounces@autox.team.net";
moz-do-not-send="true">mailto:healeys-bounces@autox.team.net</a>]
<b>On Behalf Of </b>Bob Spidell<br>
<b>Sent:</b> Tuesday, October 30, 2018 7:17 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated"
href="mailto:healeys@autox.team.net";
moz-do-not-send="true">healeys@autox.team.net</a><br>
<b>Subject:</b> Re: [Healeys] oil
pump<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p>I'll offer what I know/have heard*. I have the 'high
capacity' type in my BJ8, which is what the DWR
techs/sales people recommended for a road car. Older
6-cyl cars had a rotor type pump. They (the rotor
type) are supposed to be more efficient--i.e. they
pump more oil--at lower RPMs. At some point it was
discovered, probably from service bay repairs, that
this type of pump put an excessive shear load on the
bevel gears on the cam that drive the pump, causing
them to wear out. Later cars started getting the gear
type pump, which is less efficient at lower RPMs but
puts less of a load on the cam, and is probably less
expensive to manufacture as well (esp. if the gears
are the sintered iron variety). I think the bevel
gears on the cams were re-engineered, IIRC they got an
additional tooth to spread the load.<span
style="font-size:12.0pt"><o:p></o:p></span></p>
<p>The Welch HC pump is the rotor type. I did a full
engine rebuild and installed the DWR HC pump; I didn't
notice any pressure change worth mentioning--I
'gained' 15 PSI at idle when I had my gauge
overhauled--but the 'high capacity' I believe refers
to volume rather than pressure (which, of course, is
mostly dictated by engine speed).  The 'standard
type' pump is a gear type, hence it's more appropriate
for high-RPM race engines as pump flow is proportional
to RPM, and at 6K RPM or more you'll get plenty of oil
with less load from the gear type.<o:p></o:p></p>
<p>I'm not positive, but if you look at the photos
closely, you can see the 'gallery plug' on the top of
the case. I suppose it allows inspection of the
innards of the pump without having to break the case.Â
I believe it's threaded so not likely to pop out. If
you're getting a new pump you'll likely need a new
drive shaft and, surprisingly, DWR sells it cheaper
than our (US) vendors sell it at (I think they might
import the DWR shaft).<o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">*
apply appropriate grains of salt<br>
<br>
Bob<o:p></o:p></p>
<div>
<p class="MsoNormal">On 10/30/2018 5:12 AM, <a
href="mailto:simon.lachlan@alexarevel.plus.com";
moz-do-not-send="true">simon.lachlan@alexarevel.plus.com</a>
wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal">Has anyone got the Denis Welch
oil pump ENG672M? See:-<o:p></o:p></p>
<p class="MsoNormal"><a
href="https://www.bighealey.co.uk/performance-parts/austin-healey/engines/3000-bottom-end?page=3";
moz-do-not-send="true">https://www.bighealey.co.uk/performance-parts/austin-healey/engines/3000-bottom-end?page=3</a><o:p></o:p></p>
<h2
style="mso-margin-top-alt:6.0pt;margin-right:0in;margin-bottom:6.0pt;margin-left:0in;line-height:20.25pt">Their
text:- â??<span
style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#555555;mso-fareast-language:EN-GB">Heat
treated castings for longer life and removable
gallery plugs to be sure it is clean are
advantages of both types of oil pumps we offer. We
recommend the high capacity for all road engines
using a standard type crank up to 6000 rpm and the
standard pump for race engines, steel cranks or
anything over 6000 rpm. Both are precision
machined and assembled in-house to control the
highest quality.<br>
</span><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#555555;mso-fareast-language:EN-GB">-
ENG672 is the standard type.</span><span
style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#555555;mso-fareast-language:EN-GB"><br>
- ENG672M is the high capacity
pump.â??</span><o:p></o:p></h2>
<p class="MsoNormal"
style="margin-bottom:12.75pt;line-height:14.4pt"><span
style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#555555;mso-fareast-language:EN-GB">What
are â??removable gallery plugsâ???</span><o:p></o:p></p>
<p class="MsoNormal"
style="margin-bottom:12.75pt;line-height:14.4pt"><span
style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#555555;mso-fareast-language:EN-GB">Is
it just me or is the above a bit
counter-intuitive? â??High capacityâ?? for road cars
and â??standardâ?? for race engines? Surely the
highest capacity is needed where the engine is
working hardest ie racing? </span><o:p></o:p></p>
<p class="MsoNormal"
style="margin-bottom:12.75pt;line-height:14.4pt"><span
style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#555555;mso-fareast-language:EN-GB">And
donâ??t I remember that, with the standard BMC
pumps, the older type is reckoned to be better
than the newer type? Is this something similar to
Denis Welchâ??s two pumps?</span><o:p></o:p></p>
<p class="MsoNormal"
style="margin-bottom:12.75pt;line-height:14.4pt"><span
style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#555555;mso-fareast-language:EN-GB">Anyhow,
if anyoneâ??s got oneâ?¦..whatâ??s it like? Did the oil
pressure improve at all?</span><o:p></o:p></p>
<p class="MsoNormal"
style="margin-bottom:12.75pt;line-height:14.4pt"><span
style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#555555;mso-fareast-language:EN-GB">Iâ??m
guessing that most people will have fitted one as
part of a big rebuild thus they wonâ??t have
straightforward â??before and afterâ?? comparisons.
Iâ??m thinking of fitting mine to my engine as part
of a small winter project and hope I can squeeze a
few more psi into the system. </span><o:p></o:p></p>
<br>
</blockquote>
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</blockquote>
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