Mattml430 Posted March 12 Share Posted March 12 So I’m posting this for Ron because Doug and I had him barred from posting for using Phillips head screws somewhere. No not really he is just unable to post on the forum at the moment. Message from Ron. Hello 2249 Senior 6 owners I have a Stromberg UX2 carby on my Senior This carby replaced the TX2 that were the first ones fitted to the engine What I need to know is what is the size of the venturi on the correct UX2 that is fitted to the engine Maybe Carb King can help Link to comment Share on other sites More sharing options...
carbking Posted March 12 Share Posted March 12 The short answer: Stromberg did NOT sell a UX-2 to Dodge for the Senior 6. Jon Link to comment Share on other sites More sharing options...
carbking Posted March 12 Share Posted March 12 The long answer: The original Senior 6 was equipped with a Stromberg TX-2, with a 1 3/32 venturi (largest venturi Stromberg put in the TX-2). THE CARBURETOR WAS TOO SMALL! Stromberg also found that the 1 3/32 venturi was TOO LARGE FOR THE THROTTLE BORE OF THE TX-2, impacting the vacuum signal. The largest venturi I have found in the UX-2 is 1 1/16 (same throttle bore as the TX-2). VERY EARLY in the life of the Senior 6, the TX-2 was replaced by the UX-3 with a 1 1/8 inch venturi. As the UX-3 has a larger throttle bore, the venturi could also be larger. Jon Link to comment Share on other sites More sharing options...
RWPerry Posted March 12 Share Posted March 12 After going through three TX2s and a UX3 on my car and having all of them succumb to pot metal disease, I finally gave up and went with a Carter BB1. On many tours over the last 7 years it has worked great with no problems. 1 Link to comment Share on other sites More sharing options...
nearchoclatetown Posted March 12 Share Posted March 12 The first edition Senior owner's manual we have says Stromberg TX 2 as has been said but another book says it has 1 1/4 venturi which John says did not exist. I'd go with the BB1 if it was me. Besides that will give us something to pick at on Ron's car. Link to comment Share on other sites More sharing options...
carbking Posted March 12 Share Posted March 12 The TX-2 is what is referred to as an S.A.E. size 2 carburetor. The S.A.E. size 2 carbs were listed as being a "nominal" 1 1/4 inch carburetor. This terminology confused some early documentationalists. I don't have a good one to measure, but most Stromberg size 2 carbs have a 1 and 7/16 inch throttle bore. The size 3 would be 1 11/16 inches. The Carter BB-1 289s or later 289sd both have 1 1/16 inch venturii. As all BB-1 Carters are straight flange, either would require a cross-flange adapter. Jon Link to comment Share on other sites More sharing options...
Mattml430 Posted March 13 Author Share Posted March 13 Ron’s pics he sent me today Pic 1 My carby Pic 2 UX 3 and UX2 showing the flang size Pic 3 the other UX2 base that is 15/16 venturi It looks like Jon has answered my guestion about which is the correct venturi size for my engine Link to comment Share on other sites More sharing options...
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