<div style="color:black;font: 12pt Arial, Helvetica, sans-serif;">
<div> <font size="3">Carburetors are not trivial. The fuel/air ratio controls are subtle and subject to many outside variables such as temperature. The A/F ration needed at a given air flow will be different depending on engine speed vs throttle position so adjustments are, at best, a compromise. <br>
</font></div>
<div><font size="3"><br>
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<div><font size="3">The lads in Coventry spend many, many hours setting up an optimum compromise and I see no sense in tossing all that work in the bin unless you have made really significant changes to the engine (cam, compression, porting, etc)</font></div>
<div><font size="3"><br>
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<div><font size="3">I agree. I'll stick with the SU's.</font><br>
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<div style="clear:both"><font size="4">Dave </font><br>
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<div style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original Message-----<br>
From: Michael Marr <mmarr@albiontechnical.com><br>
To: dave <dave@ranteer.com>; Mark J Bradakis <mark@bradakis.com><br>
Cc: triumphs@autox.team.net <triumphs@autox.team.net><br>
Sent: Wed, Feb 5, 2020 2:05 pm<br>
Subject: Re: [TR] weber carbs<br>
<br>
<div id="yiv1082235734">
<style><!-- #yiv1082235734 _filtered {} _filtered {} #yiv1082235734 #yiv1082235734 p.yiv1082235734MsoNormal, #yiv1082235734 li.yiv1082235734MsoNormal, #yiv1082235734 div.yiv1082235734MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri", sans-serif;} #yiv1082235734 a:link, #yiv1082235734 span.yiv1082235734MsoHyperlink { color:blue; text-decoration:underline;} #yiv1082235734 span.yiv1082235734EmailStyle19 { font-family:"Calibri", sans-serif; color:windowtext;} #yiv1082235734 .yiv1082235734MsoChpDefault { font-size:10.0pt;} _filtered {} #yiv1082235734 div.yiv1082235734WordSection1 {} --></style>
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<div class="yiv1082235734MsoNormal">Here’s an interesting article on various carb choices for the BMC B Series engine, which I think would be fairly analogous to the TR2 through TR4 engines. It covers the 32/36 DGV, the 45DCOE, and the variations on the H4 and H6 SUs.</div>
<div class="yiv1082235734MsoNormal"> </div>
<div class="yiv1082235734MsoNormal"><a rel="noopener noreferrer" target="_blank" href="http://www.mgbmga.com/tech/mgb19.htm">http://www.mgbmga.com/tech/mgb19.htm</a></div>
<div class="yiv1082235734MsoNormal"> </div>
<div class="yiv1082235734MsoNormal">I think I will keep my SUs <span style="font-family:UI sans-serif;">
😊</span></div>
<div class="yiv1082235734MsoNormal"> </div>
<div class="yiv1082235734MsoNormal">Mike</div>
<div class="yiv1082235734MsoNormal"> </div>
<div>
<div class="yiv1082235734MsoNormal">Michael J Marr, P.E., CEng.</div>
<div class="yiv1082235734MsoNormal">Albion Technical Services</div>
<div class="yiv1082235734MsoNormal">W5918 Hackbarth Rd</div>
<div class="yiv1082235734MsoNormal">Fort Atkinson, WI 53538</div>
<div class="yiv1082235734MsoNormal"> </div>
<div class="yiv1082235734MsoNormal">Cell: 630-202-0065</div>
<div class="yiv1082235734MsoNormal">Email: mmarr@albiontechnical.com</div>
</div>
<div class="yiv1082235734MsoNormal"> </div>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in;">
<div class="yiv1082235734MsoNormal"><b>From:</b> dave <dave@ranteer.com> <br>
<b>Sent:</b> Wednesday, February 5, 2020 10:41 AM<br>
<b>To:</b> Michael Marr <mmarr@albiontechnical.com>; Mark J Bradakis <mark@bradakis.com><br>
<b>Cc:</b> triumphs@autox.team.net<br>
<b>Subject:</b> Re: [TR] weber carbs</div>
</div>
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<div class="yiv1082235734MsoNormal"> </div>
<div class="yiv1082235734MsoNormal">Yes, for a stock engine. My tr4 is waaay not stock </div>
<div>
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<div>
<div class="yiv1082235734MsoNormal"><span style="color:black;">-------- Original message --------</span></div>
</div>
<div>
<div class="yiv1082235734MsoNormal"><span style="color:black;">From: Michael Marr <<a rel="noopener noreferrer" ymailto="mailto:mmarr@albiontechnical.com" target="_blank" href="mailto:mmarr@albiontechnical.com">mmarr@albiontechnical.com</a>>
</span></div>
</div>
<div>
<div class="yiv1082235734MsoNormal"><span style="color:black;">Date: 2/5/20 9:52 AM (GMT-06:00)
</span></div>
</div>
<div>
<div class="yiv1082235734MsoNormal"><span style="color:black;">To: Mark J Bradakis <<a rel="noopener noreferrer" ymailto="mailto:mark@bradakis.com" target="_blank" href="mailto:mark@bradakis.com">mark@bradakis.com</a>>
</span></div>
</div>
<div>
<div class="yiv1082235734MsoNormal"><span style="color:black;">Cc: <a rel="noopener noreferrer" ymailto="mailto:triumphs@autox.team.net" target="_blank" href="mailto:triumphs@autox.team.net">
triumphs@autox.team.net</a> </span></div>
</div>
<div>
<div class="yiv1082235734MsoNormal"><span style="color:black;">Subject: Re: [TR] weber carbs
</span></div>
</div>
<div>
<div class="yiv1082235734MsoNormal"><span style="color:black;"> </span></div>
</div>
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<div class="yiv1082235734MsoNormal">Well, having written what I wrote, I did a little research and found that someone is actually offering a dual 32/36 DGEV setup for a TR7. So maybe it’s easier to do than I thought. I would think this would be a lot of carb for this engine,
however. </div>
<div>
<div class="yiv1082235734MsoNormal"> </div>
</div>
<div>
<div class="yiv1082235734MsoNormal"><a rel="noopener noreferrer" target="_blank" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.amazon.com_TRIUMPH-2DDUAL-2DWEBER-2DCONVERSION-2DP28-2D010_dp_B01N5QPJC6&d=DwMGaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=YR2ZqwGj7Zo2C-yt3QUBH5aoBlZNxWL23aumdGkLOtY&m=7HzNzfvdUM6eLoIatW3HzHNXiNGHAVnsScu6J0FesL8&s=mrOdqSUfNTGASBfzHMZuytE3qwTliPWUOiS437-v3Xs&e=">https://www.amazon.com/TRIUMPH-DUAL-WEBER-CONVERSION-P28-010/dp/B01N5QPJC6</a></div>
</div>
<div>
<div class="yiv1082235734MsoNormal"> </div>
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<div>
<div class="yiv1082235734MsoNormal" style="margin-bottom:12.0pt;">Mike</div>
<div id="yiv1082235734AppleMailSignature">
<div class="yiv1082235734MsoNormal">Michael Marr</div>
<div>
<div>
<div class="yiv1082235734MsoNormal"> </div>
</div>
<div>
<div class="yiv1082235734MsoNormal">Mobile: 630-202-0065</div>
</div>
<div>
<div class="yiv1082235734MsoNormal"> </div>
</div>
<div>
<div class="yiv1082235734MsoNormal">Sent from my iPad</div>
</div>
</div>
</div>
<div>
<div class="yiv1082235734MsoNormal" style="margin-bottom:12.0pt;"><br>
On Feb 5, 2020, at 07:03, Michael Marr <<a rel="noopener noreferrer" ymailto="mailto:mmarr@albiontechnical.com" target="_blank" href="mailto:mmarr@albiontechnical.com">mmarr@albiontechnical.com</a>> wrote:</div>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt;">
<div>
<div class="yiv1082235734MsoNormal">I don’t know a lot about Weber carbs, but I believe that these particular carbs are progressive choke - that is, at normal throttle openings only one choke (the smaller one) is in use. The second choke opens only when the throttle is opened
wide. I believe this style of Weber was developed to give cars the economy of a single choke carb under normal driving conditions, with the ability to greatly increase mixture flow to the engine when additional power was needed. As such, I would think that
it would be difficult to synchronize a pair of them. But, as I said up front, I know very little about Weber carbs...<br>
<br>
Mike<br>
<br>
Michael Marr<br>
<br>
Mobile: 630-202-0065<br>
<br>
Sent from my iPad<br>
<br>
<br>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt;">
<div class="yiv1082235734MsoNormal">On Feb 5, 2020, at 02:23, Mark J Bradakis <<a rel="noopener noreferrer" ymailto="mailto:mark@bradakis.com" target="_blank" href="mailto:mark@bradakis.com">mark@bradakis.com</a>> wrote:</div>
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<div class="yiv1082235734MsoNormal">On 2/4/20 8:00 PM, dave wrote:</div>
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<div class="yiv1082235734MsoNormal">I think I found the ID – could it be a 32-36 DGV?</div>
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<div class="yiv1082235734MsoNormal">Yep.</div>
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<div class="yiv1082235734MsoNormal">mjb.</div>
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