<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p><br>
</p>
<p>You probably have HS-2s. HS carbs have a separate float bowl
assembly. HIF carbs have the float bowl integral with the carb
body. I don't think those were ever fitted to MGAs. <br>
</p>
<p>If you don't already have one, get an SU tool kit. It will have a
couple of pointers you can attach to the pistons which will let
you sync the carbs. It will have a wrench for the mixture
adjustments, and most importantly, it will have a small tool to
center the needle on the HS carbs. <br>
</p>
<p>And, if you get totally frustrated with that MG, I will give it a
good home. :-) Selling *my* '62 MGA is one of the few regrets I
have. <br>
</p>
<p>If it's any consolation, my first encounter with those carbs was
anything but encouraging. Sitting there at idle, the engine would
rev up to 2000 RPM, then drop to 900, and keep repeating. <br>
</p>
HTH,<br>
Dave Ambrose<br>
<br>
<br>
<div class="moz-cite-prefix">On 12/27/2016 12:52 PM, Clayton
Kirkwood via Mgs wrote:<br>
</div>
<blockquote
cite="mid:00ae01d26083$3375b4e0$9a611ea0$@godblessthe.us"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<meta name="Generator" content="Microsoft Word 15 (filtered
medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
span.EmailStyle18
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.EmailStyle19
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="WordSection1">
<p class="MsoNormal">I have no idea which kind of SU’s I have.
This is on a 62A. How am I to tell?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> PaulHunt73
[<a class="moz-txt-link-freetext" href="mailto:paulhunt73@virginmedia.com">mailto:paulhunt73@virginmedia.com</a>] <br>
<b>Sent:</b> Tuesday, December 27, 2016 12:45 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:crk@godblessthe.us">crk@godblessthe.us</a>; <a class="moz-txt-link-abbreviated" href="mailto:mgs@autox.team.net">mgs@autox.team.net</a><br>
<b>Subject:</b> Re: [Mgs] Carbs still being nasty<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Times New
Roman",serif">OK, twin SUs then, but HS or HIF?</span><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Times New
Roman",serif">Screw both the idle screws in until you
can get it to idle, only then can you really have any
chance of adjusting the air-flow balance and mixture.</span><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Times New
Roman",serif">If you still have problems getting it
to idle, perhaps the mixtures are way out. The starting
point is to screw the jets up until the top is flush with
the bridge, then screw back down two full turns. You will
probably also need some enrichment from the choke.</span><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Times New
Roman",serif">For air-flow balance yes when listening
with a tube at the carb intakes if one carb is quieter
than the other the quieter one needs the idle screw to be
screwed in further until the sounds are as equal as you
can judge. This should speed up the idle, so while doing
that the louder carb may well need its screw unscrewed a
little to keep the engine at a reasonable idle speed.</span><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Times New
Roman",serif">Whilst you can adjust for air-flow
balance while the engine is warming you won't be able to
adjust properly for mixture until the engine is fully up
to temperature.</span><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Times New
Roman",serif">PaulH.</span><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"> <o:p></o:p></span></p>
</div>
<blockquote style="border:none;border-left:solid black
1.5pt;padding:0in 0in 0in
4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt">
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif">-----
Original Message ----- <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="background:#E4E4E4"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif">I
can’t keep the engine running when tuning for both slow
idle, it dies as soon as I start it. I have had some
success listening through the rubber tube and there is
significant difference. I presume the intake which
sounds weaker needs the idle raised??<o:p></o:p></span></p>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
</blockquote>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
<a class="moz-txt-link-abbreviated" href="mailto:Mgs@autox.team.net">Mgs@autox.team.net</a>
Donate: <a class="moz-txt-link-freetext" href="http://www.team.net/donate.html">http://www.team.net/donate.html</a>
Suggested annual donation $12.75
Archive: <a class="moz-txt-link-freetext" href="http://www.team.net/archive">http://www.team.net/archive</a>
Forums: <a class="moz-txt-link-freetext" href="http://www.team.net/forums">http://www.team.net/forums</a>
Unsubscribe: <a class="moz-txt-link-freetext" href="http://autox.team.net/mailman/options/mgs/stargazer1@cox.net">http://autox.team.net/mailman/options/mgs/stargazer1@cox.net</a>
</pre>
</blockquote>
<br>
</body>
</html>