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The SU AUF 301/303/305 fuel pump should deliver 15 Imperial
gallons/hour. Maximum pressure should be 3,8psi.
Kees Oudesluijs
Op 29-1-2021 om 23:12 schreef Michael Oritt:
> If all else fail check your fuel pump for sufficient delivery. I
> can't remember for sure but believe a free-flowing SU is supposed to
> pump a gallon in a minute, but I'm sure someone will correct me if I
> am wrong.
>
> Best--Michael Oritt
>
>
>
> On Fri, Jan 29, 2021 at 9:14 AM healeyguy--- via Healeys
>
> Len and Listers
> Pushing the pin up to lift the piston is the start of the "test
> the mixture setting" exercise. You begin the push, ever so
> slightly, and listen to the idling engine. The idle goes up.Â
> What do you do next? You continue to raise the pin to see what
> happens. If the idle continues to rise you know you are in a rich
> condition. If the idle stops going up and starts to drop off the
> mixture is pretty close. If the idle does not increase from the
> start you usually assume you are in a lean condition. This gets
> the carb mixture close at idle which in theory means the carb is
> going to operate throughout the RPM range.
>
> There is one other assumption here, that being that the carbs is
> in the same condition as new mounted on an engine operating as
> new. That is when allot of other stuff comes into play. The carb
> float bowl items, needle/seat and float level must be set
> correctly. Float must not be leaking thus making it sink. Carb
> must have the correct main needle and jet and they have to be
> installed and adjusted correctly. Flutter at high RPM may indicate
> that the piston spring in the suction chamber is weak or the
> incorrect spring installed. Ignition timing and condition and
> setting of ignition points.
> The list goes on and on......
> P
>
>
> -----Original Message-----
> From: Leonard Berkowitz <DrBerkowitz@hotmail.com
> Subject: [Healeys] Another backfiring question
>
> Hi all
>
> Just finished repairing and reinstalling the carburetors on my
> BJ7. I thought I had everything adjusted properly. According to my
> Haynes Manuel the engine speed should increase slightly when you
> lift the piston a very small amount. Mine does that. My dwell
> angle is where it needs to be and the car starts and idles nicely.
> Also sounds beautiful when I punch the accelerator linkages. The
> problem is that when I get it up to 60-70 mph I get what sounds
> like backfiring into my carburetors. Also sounds like it doesnâ??t
> have a whole lot left in the tank, so to speak. Does that sound
> like I am running too rich or too lean?
>
> Len Berkowitz
>
>
> _______________________________________________
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>
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<p>The SU AUF 301/303/305 fuel pump should deliver 15 Imperial
gallons/hour. Maximum pressure should be 3,8psi.</p>
<p>Kees Oudesluijs</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Op 29-1-2021 om 23:12 schreef Michael
Oritt:<br>
</div>
<blockquote type="cite"
cite="mid:CAPTa0B6f2BJ5XKAv0fpgW0hE+jeRxqiTV7U5tYm3NMCug5nbfA@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div class="gmail_default" style="color:#3333ff">If all else
fail check your fuel pump for sufficient delivery. I can't
remember for sure but believe a free-flowing SU is supposed to
pump a gallon in a minute, but I'm sure someone will correct
me if I am wrong.</div>
<div class="gmail_default" style="color:#3333ff"><br>
</div>
<div class="gmail_default" style="color:#3333ff">Best--Michael
Oritt</div>
<div class="gmail_default" style="color:#3333ff"><br>
</div>
<div class="gmail_default" style="color:#3333ff"><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Jan 29, 2021 at 9:14
AM healeyguy--- via Healeys <<a
href="mailto:healeys@autox.team.net";
moz-do-not-send="true">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 style="color:black;font:10pt Arial,Helvetica,sans-serif">
<div
style="font-family:arial,helvetica;font-size:10pt;color:black">
<div id="gmail-m_-8405075880273479824yiv9115048286">
<div style="color:black;font:10pt
Arial,Helvetica,sans-serif">Len and Listers</div>
<div style="color:black;font:10pt
Arial,Helvetica,sans-serif">Pushing the pin up to lift
the piston is the start of the "test the mixture
setting" exercise. You begin the push, ever so
slightly, and listen to the idling engine. The idle
goes up. What do you do next? You continue to raise
the pin to see what happens. If the idle continues to
rise you know you are in a rich condition. If the idle
stops going up and starts to drop off the mixture is
pretty close. If the idle does not increase from the
start you usually assume you are in a lean condition.Â
This gets the carb mixture close at idle which in
theory means the carb is going to operate throughout
the RPM range.  </div>
<div style="color:black;font:10pt
Arial,Helvetica,sans-serif"><br>
</div>
<div style="color:black;font:10pt
Arial,Helvetica,sans-serif">There is one other
assumption here, that being that the carbs is in the
same condition as new mounted on an engine operating
as new. That is when allot of other stuff comes into
play. The carb float bowl items, needle/seat and
float level must be set correctly. Float must not be
leaking thus making it sink. Carb must have the
correct main needle and jet and they have to be
installed and adjusted correctly. <span
style="font-size:10pt;background-color:transparent">Flutter
at high RPM may indicate that the piston spring in
the suction chamber is weak or the incorrect spring
installed. Ignition timing and condition and setting
of ignition points.</span></div>
<div style="color:black;font:10pt
Arial,Helvetica,sans-serif">The list goes on and
on......</div>
<div style="color:black;font:10pt
Arial,Helvetica,sans-serif">P<br clear="none">
<br clear="none">
<br clear="none">
<div
style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original
Message-----<br clear="none">
From: Leonard Berkowitz <<a
href="mailto:DrBerkowitz@hotmail.com";
target="_blank"
moz-do-not-send="true">DrBerkowitz@hotmail.com</a>><br
clear="none">
Subject: [Healeys] Another backfiring question<br
clear="none">
<br clear="none">
<div
id="gmail-m_-8405075880273479824yiv9115048286yqt58392">
<div
id="gmail-m_-8405075880273479824yiv9115048286">
<div dir="ltr">
<div
style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Hi
all</div>
<div
style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)"><br
clear="none">
</div>
<div
style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Just
finished repairing and reinstalling the
carburetors on my BJ7. I thought I had
everything adjusted properly. According to
my Haynes Manuel the engine speed should
increase slightly when you lift the piston a
very small amount. Mine does that. My dwell
angle is where it needs to be and the car
starts and idles nicely. Also sounds
beautiful when I punch the accelerator
linkages. The problem is that when I get it
up to 60-70 mph I get what sounds like
backfiring into my carburetors. Also sounds
like it doesnâ??t have a whole lot left in the
tank, so to speak. Does that sound like I am
running too rich or too lean? </div>
<div
style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)"><br
clear="none">
</div>
<div
style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">Len
Berkowitz </div>
</div>
</div>
</div>
<br>
<br clear="none">
</div>
</div>
</div>
</div>
</div>
_______________________________________________<br>
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<br>
</blockquote>
</div>
<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>
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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>
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href="http://autox.team.net/mailman/listinfo/healeys";>http://autox.team.net/mailman/listinfo/healeys</a>
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