Carburetor Research

[40phil41]

In the thread which I started entitled 'Running Lean??' there is a brief discussion about my carburetor. I'm still not 100% convinced that I have the correct carb. so am starting this new thread on this topic. Recall that the engine in my 1940 Dodge is a D24C (1946-48, Cdn. 25 in. block) but the carb. is the 1940 Stromberg (BXV-3). Two issues still bug me:

1. My MOPAR parts book (1940 to 1947 model years) shows that both 1940 and 1946-47 Dodge had a Stromberg Carb. However, the Chrysler part number is different between these years. This difference could be as simple as the throttle linkage or some internal differences or both.

2. Some web sites I have visited indicate that the correct carb. for 1946-48 Dodge is the Stromberg BXV-3. But these are U.S. sites. Is the U.S. D24 engine a 23 in. or 25 in. block? If 23, would the carb. be different than that on my Canadian D24C 25 in. engine?

Does anyone have a Stromberg catalogue that lists both the Canadian and U.S. engines/carb's.?

Thanks again,

Phil

[greg g]

Externally except for electrics for tranny applications the carbs are likley interchangable. Wonder if your lean condition with the 1940 carb is internal jetting. Block sizes aside, the mounting on the manifold would be the same and the carbs could interchange from one manifold to another but internally they might be jetted differently if the 40 engine is a 218 and the later is a 230 or larger. You might want to give George Ashe a call as he seems to know all about MOPAR carburation though I know he has a fondness for Carters over those srombergs. 814 354 2621.

[40phil41]

Thanks Greg. I am going to be out for the rest of today and tomorrow so I'll try to contact George later in the week. Probably not a real issue but something I am curious about.

Phil

[40phil41]

Well I finally got around to calling George Asche about my Stromberg carburetor. He is a very interesting and knowledgeable fellow. In fact, he totally dislikes Stromberg carbs. (if calling them junk can be interpreted as a dislike). He highly recommends using the Carters if originality is not an issue. Since I am after a smooth running engine I am going to install a N.O.S. Carter that I have onto my D24C engine and see if there is any noticeable difference. The Carter I have is actually for a 1941-47 Dodge truck. Carb. model DTB1R. This wont happen now until after XMAS but I will let everyone know how this goes.

P.S. Over 20 years ago I had a Carter carb. on my engine until I came across the 'correct' Stromberg carb and swapped them out. Don't remember the effect on running (senility again).

Phil