[TR] weber carbs

Michael Marr mmarr at albiontechnical.com
Wed Feb 5 13:05:45 MST 2020


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.

http://www.mgbmga.com/tech/mgb19.htm

I think I will keep my SUs 😊

Mike

Michael J Marr, P.E., CEng.
Albion Technical Services
W5918 Hackbarth Rd
Fort Atkinson, WI 53538

Cell:  630-202-0065
Email:  mmarr at albiontechnical.com

From: dave <dave at ranteer.com>
Sent: Wednesday, February 5, 2020 10:41 AM
To: Michael Marr <mmarr at albiontechnical.com>; Mark J Bradakis <mark at bradakis.com>
Cc: triumphs at autox.team.net
Subject: Re: [TR] weber carbs

Yes,  for a stock engine.   My tr4 is waaay not stock

-------- Original message --------
From: Michael Marr <mmarr at albiontechnical.com<mailto:mmarr at albiontechnical.com>>
Date: 2/5/20 9:52 AM (GMT-06:00)
To: Mark J Bradakis <mark at bradakis.com<mailto:mark at bradakis.com>>
Cc: triumphs at autox.team.net<mailto:triumphs at autox.team.net>
Subject: Re: [TR] weber carbs

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.

https://www.amazon.com/TRIUMPH-DUAL-WEBER-CONVERSION-P28-010/dp/B01N5QPJC6<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=>

Mike
Michael Marr

Mobile:  630-202-0065

Sent from my iPad

On Feb 5, 2020, at 07:03, Michael Marr <mmarr at albiontechnical.com<mailto:mmarr at albiontechnical.com>> wrote:
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...

Mike

Michael Marr

Mobile:  630-202-0065

Sent from my iPad


On Feb 5, 2020, at 02:23, Mark J Bradakis <mark at bradakis.com<mailto:mark at bradakis.com>> wrote:

On 2/4/20 8:00 PM, dave wrote:

I think I found the ID – could it be a 32-36 DGV?



Yep.

mjb.


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