This is a multi-part message in MIME format.
--===============6710248037171233281==
boundary="------------3D9CEFF73037A9D7FACD140F"
Content-Language: en-GB
This is a multi-part message in MIME format.
--------------3D9CEFF73037A9D7FACD140F
Content-Transfer-Encoding: 8bit
Ed has his limitations as Ant does but I think Ant is more inclined to
repair things himself. Anyway they have to make a show and the result of
their work is not that important. If you look closely enough that shows.
SU's are certainly not rubbish. In fact they are a very clever design.
However it is not easy to get them absolutely identical which makes it
sometimes difficult to get them synchronised over the whole rpm range.
On a tuned engine it is complicated to get the needle profile and
dashpot spring right from scratch.
On older cars with SUs you have the problem of spindle wear/false air,
leakages and sometimes sticking pistons because of wear, dirt or
vibrations. I had SU's on my Triumph Spitfire and worked on them for
others on A-H, MG, Mini, TR, Sunbeamand on Strombergs (similar to SU) on
TR5/6, Saab, Volvo, Jensen-Healey. Spindle wear was nearly always an issue.
A Double Weber/DellOrto set up has a barrel for each cylinder which
makes for better breathing, no moving parts other than the butterflies
and accelerator pump and its spindles are on sealed ball bearings so no
wear/false air or leakage. They are very simple to set up on a rolling
road if you are properly equipped specialist with a large choice of
chokes and jets and once set up properly you do not have to touch them
for a long time. Many clubs have information on the jetting and the
venturies to be used. Failure of the diaphragm of the accelerator pumps
is extremely rare. In more that 40 years it never happened to me.
The gas mileage for both a properly set up SU set or Weber/DellOrto set
are very similar but Webers/DellOrtos perform better on full throttle
and high rpm.
I have a double DellOrto DHLA set up on my car (J-H) and I have not
touched them for years. If need be they are easy to balance without the
need of vacuum gauges and even setting the idle mixture without CO meter
or Colourtunes is easy enough if your ears are alright.
Kees Oudesluijs
Op 23-11-2020 om 18:26 schreef Bob Spidell:
> I generally like Ant Anstead--still preferred Edd, though--but when he
> called SUs 'rubbish' I almost threw my remote at the big screen. Even
> a pro like Edd had to bring in a specialist to tune the Webers on a Lambo.
>
> SUs are a simple, elegant design; compared to them fixed-choke carbs
> with their multiple jets, accelerator pumps--a common failure
> point--are a kludge. Both share common float valve/bowl issues.
>
>
> On 11/23/2020 8:48 AM, David Nock BCS via Healeys wrote:
>> We have removed several sets of Webers over the years on several
>> different British Cars. Triumphs, MGs, Healeys. Due to poor running,
>> poor gas economy etc.,
>> They are great if you have a high performance engine but on a stock
>> or mild built British motor they are more work that they are worth.
>> The SU carbs once set up correctly will not require and fiddling
>> David Nock
>> British Car Specialists
>> 209-948-8767
>> www.britishcarspecialists.com
>> *From:* Kees Oudesluijs via Healeys
>> *Sent:* Monday, November 23, 2020 8:28 AM
>> *To:* healeys@autox.team.net
>> *Subject:* Re: [Healeys] Non Healey Request
>>
>> The Weber, or better two Webers (or DellOrtos) should be fine.
>> However they should be fitted with the correct jets and venturies.
>> Best to contact a MG forum, they will know.
>>
>> Webers or DellOrtos are so much easier to maintain than the SUs. A
>> good book is Des Hammill's book How to Build & Power Tune Weber &
>> DellOrto DCOEE & DHLA Carburetors
>>
>> Kees Oudesluijs
>>
>>
>
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
>
> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/coudesluijs@chello.nl
>
--------------3D9CEFF73037A9D7FACD140F
Content-Transfer-Encoding: 8bit
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>Ed has his limitations as Ant does but I think Ant is more
inclined to repair things himself. Anyway they have to make a show
and the result of their work is not that important. If you look
closely enough that shows.</p>
<p>SU's are certainly not rubbish. In fact they are a very clever
design. However it is not easy to get them absolutely identical
which makes it sometimes difficult to get them synchronised over
the whole rpm range. On a tuned engine it is complicated to get
the needle profile and dashpot spring right from scratch. <br>
</p>
<p>On older cars with SUs you have the problem of spindle wear/false
air, leakages and sometimes sticking pistons because of wear, dirt
or vibrations. I had SU's on my Triumph Spitfire and worked on
them for others on A-H, MG, Mini, TR, Sunbeamand on Strombergs
(similar to SU) on TR5/6, Saab, Volvo, Jensen-Healey. Spindle wear
was nearly always an issue.<br>
</p>
<p>A Double Weber/DellOrto set up has a barrel for each cylinder
which makes for better breathing, no moving parts other than the
butterflies and accelerator pump and its spindles are on sealed
ball bearings so no wear/false air or leakage. They are very
simple to set up on a rolling road if you are properly equipped
specialist with a large choice of chokes and jets and once set up
properly you do not have to touch them for a long time. Many clubs
have information on the jetting and the venturies to be used.
Failure of the diaphragm of the accelerator pumps is extremely
rare. In more that 40 years it never happened to me.</p>
<p>The gas mileage for both a properly set up SU set or
Weber/DellOrto set are very similar but Webers/DellOrtos perform
better on full throttle and high rpm.<br>
</p>
<p>I have a double DellOrto DHLA set up on my car (J-H) and I have
not touched them for years. If need be they are easy to balance
without the need of vacuum gauges and even setting the idle
mixture without CO meter or Colourtunes is easy enough if your
ears are alright.</p>
<p><br>
</p>
<p>Kees Oudesluijs</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Op 23-11-2020 om 18:26 schreef Bob
Spidell:<br>
</div>
<blockquote type="cite"
cite="mid:c4b4b482-f527-36f3-cbc5-a4614f0025e9@comcast.net">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
I generally like Ant Anstead--still preferred Edd, though--but
when he called SUs 'rubbish' I almost threw my remote at the big
screen. Even a pro like Edd had to bring in a specialist to tune
the Webers on a Lambo.<br>
<br>
SUs are a simple, elegant design; compared to them fixed-choke
carbs with their multiple jets, accelerator pumps--a common
failure point--are a kludge. Both share common float valve/bowl
issues.<br>
<br>
<br>
<div class="moz-cite-prefix">On 11/23/2020 8:48 AM, David Nock BCS
via Healeys wrote:<br>
</div>
<blockquote type="cite"
cite="mid:EA980BA34385467EB2687A52252B6595@DavidNockHP">
<meta content="text/html; charset=UTF-8"
http-equiv="Content-Type">
<div dir="ltr">
<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR:
#000000">
<div>We have removed several sets of Webers over the years
on several different British Cars. Triumphs, MGs, Healeys.
Due to poor running, poor gas economy etc.,</div>
<div>They are great if you have a high performance engine
but on a stock or mild built British motor they are more
work that they are worth.</div>
<div>Â </div>
<div>The SU carbs once set up correctly will not require and
fiddling </div>
<div>Â </div>
<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR:
#000000">David Nock<br>
British Car Specialists<br>
209-948-8767<br>
<a class="moz-txt-link-abbreviated"
href="http://www.britishcarspecialists.com";
moz-do-not-send="true">www.britishcarspecialists.com</a></div>
<div style="FONT-SIZE: small; TEXT-DECORATION: none;
FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal;
COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline">
<div style="FONT: 10pt tahoma">
<div>Â </div>
<div style="BACKGROUND: #f5f5f5">
<div style="font-color: black"><b>From:</b> <a
title="healeys@autox.team.net"
moz-do-not-send="true">Kees Oudesluijs via Healeys</a>
</div>
<div><b>Sent:</b> Monday, November 23, 2020 8:28 AM</div>
<div><b>To:</b> <a title="healeys@autox.team.net"
moz-do-not-send="true">healeys@autox.team.net</a>
</div>
<div><b>Subject:</b> Re: [Healeys] Non Healey Request</div>
</div>
</div>
<div>Â </div>
</div>
<div style="FONT-SIZE: small; TEXT-DECORATION: none;
FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal;
COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline">
<p>The Weber, or better two Webers (or DellOrtos) should
be fine. However they should be fitted with the correct
jets and venturies. Best to contact a MG forum, they
will know.</p>
<p>Webers or DellOrtos are so much easier to maintain than
the SUs. A good book is Des Hammill's book How to Build
& Power Tune Weber & DellOrto DCOEE & DHLA
Carburetors<br>
</p>
<p>Kees Oudesluijs</p>
<p>Â </p>
<p>Â </p>
<br>
</div>
</div>
</div>
</blockquote>
<br>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre"
wrap="">_______________________________________________
Archive: <a class="moz-txt-link-freetext"
href="http://www.team.net/pipermail/healeys";>http://www.team.net/pipermail/healeys</a>
<a class="moz-txt-link-freetext"
href="http://autox.team.net/archive";>http://autox.team.net/archive</a>
<a class="moz-txt-link-abbreviated"
href="mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a>
<a class="moz-txt-link-freetext"
href="http://autox.team.net/mailman/listinfo/healeys";>http://autox.team.net/mailman/listinfo/healeys</a>
</pre>
</blockquote>
</body>
</html>
--------------3D9CEFF73037A9D7FACD140F--
--===============6710248037171233281==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
--===============6710248037171233281==--
|