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David,
Are the factory settings per SU the same as those in the shop manual
(Bentley, in my case)?
Bob
On 11/29/2018 8:18 AM, David Nock wrote:
> We install and sell probably about 50Â to 75 SU fuel pump a year with
> almost 0 returns. The only time when we had an issue with the SU pumps
> is when they first came out with the Positive Ground pumps.
> The reason for this is they went backwards in time about 50 years.
> Originally the pumps only had a set of points and no condensor. Then
> they installed a condensor in the early 50s to solve the pitting
> points and sticking problems they were having. These pumps were used
> thru the early 80â??s with very few issues other than failures due to
> age. Sometime in the late 80â??s or early 90â??s there was a demand for
> originallity for a Positive Ground pump at the time the had changed
> from a condensor to a diode in across the points. So the answer to a
> Positive Ground pump was to remove the diode. This returned the pump
> the original design and they started having pump failures in the
> Positive ground pumps.
> Then somewhere in the late 90â??s they started installing a non polarity
> concious diode in all the pumps. Thus solving the problem with pump
> failure due to the points.
> The one issue that we did find with the pumps in the late 90â??s up
> until about 2005 was that the diaphgrams / points adjustments were
> incorrect. So we would always pull all of our pumps apart and re
> adjust the points to the factory settings as per SU.
> David Nock
> healeydoc@sbcglobal.net
> 209 948 8767
> www.britishcarspecialists.com
>
> Help us have our Founder Norman Nock inducteed into the
> British Sportscar Hall of Fame, You can vote for your favorites
> by visiting the site at.
> www.britishsportscarhall.org
>
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<p>David,</p>
<p>Are the factory settings per SU the same as those in the shop
manual (Bentley, in my case)?</p>
<p>Bob</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 11/29/2018 8:18 AM, David Nock
wrote:<br>
</div>
<blockquote type="cite"
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<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR:
#000000">
<div>We install and sell probably about 50Â to 75 SU fuel pump
a year with almost 0 returns. The only time when we had an
issue with the SU pumps is when they first came out with the
Positive Ground pumps.</div>
<div>Â </div>
<div>The reason for this is they went backwards in time about
50 years.</div>
<div>Â </div>
<div>Originally the pumps only had a set of points and no
condensor. Then they installed a condensor in the early 50s
to solve the pitting points and sticking problems they were
having. These pumps were used thru the early 80â??s with very
few issues other than failures due to age. Sometime in the
late 80â??s or early 90â??s there was a demand for originallity
for a Positive Ground pump at the time the had changed from
a condensor to a diode in across the points. So the answer
to a Positive Ground pump was to remove the diode. This
returned the pump the original design and they started
having pump failures in the Positive ground pumps.</div>
<div>Â </div>
<div>Then somewhere in the late 90â??s they started installing a
non polarity concious diode in all the pumps. Thus solving
the problem with pump failure due to the points. </div>
<div>Â </div>
<div>The one issue that we did find with the pumps in the late
90â??s up until about 2005 was that the diaphgrams / points
adjustments were incorrect. So we would always pull all of
our pumps apart and re adjust the points to the factory
settings as per SU.</div>
<div>Â </div>
<div>Â </div>
<div>Â </div>
<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR:
#000000">David Nock<br>
<a class="moz-txt-link-abbreviated"
href="mailto:healeydoc@sbcglobal.net";>healeydoc@sbcglobal.net</a><br>
209 948 8767<br>
<a class="moz-txt-link-abbreviated"
href="http://www.britishcarspecialists.com";>www.britishcarspecialists.com</a><br>
<br>
Help us have our Founder Norman Nock inducteed into the <br>
British Sportscar Hall of Fame, You can vote for your
favorites <br>
by visiting the site at.<br>
<a class="moz-txt-link-abbreviated"
href="http://www.britishsportscarhall.org";>www.britishsportscarhall.org</a><br>
</div>
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<div>Â </div>
<br>
</div>
</div>
</div>
</div>
</blockquote>
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