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How Many Dual Carburetor SJs Were Built?

  • RandyEma
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20 Jan 2015 17:48 #28965 by RandyEma
Replied by RandyEma on topic How Many Dual Carburetor SJs Were Built?
jim Hoe made several sets of rams horn manifolds . R

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  • Bob Roller
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19 Jan 2015 20:27 #28957 by Bob Roller
Replied by Bob Roller on topic a bit ore on dual carb SJ's
I found a picture of what appears to be J585 and it shows tandem intake manifolds so it would appear that maybe 4 were made.Jim Hoe is standing beside the car with the hood up.I made the comment that there was no steering column thru the left side of the fire wall so it probably was the GN convertible.

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  • TheOMDude
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08 Jan 2015 18:34 #28844 by TheOMDude
Replied by TheOMDude on topic How Many Dual Carburetor SJs Were Built?
Once again, I am indebted to you all for the information.

Dick Stewart
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  • Bob Roller
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08 Jan 2015 17:02 #28842 by Bob Roller
Replied by Bob Roller on topic Duesenberg superchargers
What Randy says makes sense.The three cars he mentions are all later cars.
The poor low speed performance he mentions makes my theory or dumping more fuel than can be properly burned is feasible.J572 had the dual carburetor blower but was pushing a lot of fuel into a small area normally serviced by a single down draft unit.

Bob Roller

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  • RandyEma
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08 Jan 2015 16:48 #28841 by RandyEma
Replied by RandyEma on topic How Many Dual Carburetor SJs Were Built?
Hello.To my knowledge their are build sheets by Duesenberg for 38 superchargers plus the prototype built by Duesenberg bros for a customers J. These SC were moved around by the factory in there period to 50 different cars. Today there are a number of reproductions built totaling roughly another 20 SC giving you atotal of 59. the dual carb cars were designed for flat out driving and were not real successful in traffic conditions and I would have to count these . The Rams horn was only used by the factory on three (3) cars the Duesenberg special and the 2 short wheelbase cars. R

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08 Jan 2015 15:03 #28837 by alsancle
Replied by alsancle on topic How Many Dual Carburetor SJs Were Built?
Again I will defer to Randy's wisdom but here is my recollection:

1. Mormon Meteor
2. SSJ #1
3. SSJ #2
4. Mormon Meteor Spare that allegedly ended up in J292.

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  • TheOMDude
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07 Jan 2015 21:09 #28833 by TheOMDude
Replied by TheOMDude on topic How Many Dual Carburetor SJs Were Built?
Chris:
Many thanks for that answer. It's exactly the sort of information I was looking for. Your information on the Petersen's car is invaluable.
The last thing I want to do is to misinform my audience.
I'll try to get in touch with Randy.
Thanks again for your answer, and your patience with a long-time Duesenberg enthusiast and new ACD Club member.

Dick Stewart
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  • Chris Summers
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07 Jan 2015 19:41 #28832 by Chris Summers
Replied by Chris Summers on topic How Many Dual Carburetor SJs Were Built?
The short answer you seem to seek is, "36 supercharged cars and very, very few of them were dual-carb." Randy may be able to give more firm numbers.

The Petersen's car was not supercharged originally, but when it was restored it was upgraded, as many were in the 1980s, with a reproduction blower and the ram's head manifolds.

Most surviving SJs now have reproduction blowers, even the cars that were blown originally, and most of the reproduction systems are the "hotter" dual-carb version.

Good luck with the exhibit. I look forward to visiting the museum once renovations are complete.

Chris Summers
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  • Justin Kerns
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07 Jan 2015 16:25 #28831 by Justin Kerns
Replied by Justin Kerns on topic How Many Dual Carburetor SJs Were Built?
Rare is completely relative. To some 1 of 100 is rare and to others it is common. You asked for a number and the truth is that there are only a few people who can answer that with some authority. Tom already suggested you contact Randy Ema and I would also suggest talking to Chris Summers. Between the two of them you should get the best available information.

In the world of Duesenberg one has to be specific as to chassis/engine numbers or things get confused very quickly. Hell it's confusing enough even when you have all the details! If you want to properly inform others as to the answer to your question then you really need a specific list of cars with numbers and body styles. Generalities and guesses just lead to the propagation of more Duesenberg misinformation.

That's my $.02!

Justin

Justin
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  • TheOMDude
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06 Jan 2015 23:24 #28828 by TheOMDude
Replied by TheOMDude on topic Thanks for the Attempts.
You people are talking 'way over my head.
I am a newbie on this board and chassis and engine numbers are Greek to me.
My purpose in posting was to have a basis upon which to state how rare the Petersen's 1933 Murphy Convertible Coupe is.
If anyone knows the chassis or engine number of those I have mentioned, that would help:

The Petersen's 1933 Murphy Convertible Coupe.
The 1933 Murphy Roadster (Chassis 235?) in the Central Texas Museum of Automotive History in Rosanky, Texas.
The 1933 SJ Brunn Riviera Convertible Sedan shown last summer at Pebble Beach.
The 1934 Rollston Limousine shown last summer at Pebble Beach.
The Mormon Meteor?

Meanwhile, it looks as though my initial guess of "a handful" is pretty close.
Thanks again for making the effort.

Dick Stewart
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  • Tom Georgeson
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06 Jan 2015 21:59 #28826 by Tom Georgeson
Replied by Tom Georgeson on topic dual carbs.
I'm sure that Randy came give you the correct numbers of cars with this set up.

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  • Bob Roller
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06 Jan 2015 14:33 #28824 by Bob Roller
Replied by Bob Roller on topic Dual carburetor SJ's
Consulting a somewhat faded memory of mine,the rams horn twin manifolds was supposedly an idea to get the power up on the Duesenberg Special in 1935.J572 has a dual carburetor supercharger but a standard manifold.The 1933 Brunn Riviera was SJ528 and sister car SJ525 had the single carburetor superchargers and the third one had no supercharger.
I am familiar with SJ528 as an unsupercharged car and the owner of record in 1951 told me he had the blower for it.I remember seeing it when we delivered the remains of J467 to him in late 1953. I have also heard there were six dual carburetor superchargers made but have no way no verify it.

Bob Roller

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  • landmark
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06 Jan 2015 14:21 #28823 by landmark
Replied by landmark on topic How Many Dual Carburetor SJs Were Built?
Hello Dick,

maybe this older thread could be helpful.

forums.phpstack-1081784-3880776.cloudwaysapps.com/phpbb2/viewto ... 7db8d3497a


Cheers

Matt

Was man besonders gerne tut,
ist selten ganz besonders gut

Wilhelm Busch

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  • TheOMDude
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05 Jan 2015 07:58 #28814 by TheOMDude
How Many Dual Carburetor SJs Were Built? was created by TheOMDude
I am a docent at the Petersen Automotive Museum in Los Angeles. We are currently closed, but are exhibiting some of our cars at the Ronald Regan Presidential Library. Starting February 1, 2015, that exhibit will include our 1933 Murphy Convertible Coupe.
I am preparing a presentation on Duesenbergs for the Pit Crew at the Petersen.
Various sources say there were 36 or 37 supercharged Js (and several were retrofitted), but none mention how many were built with the supercharger and the dual carburetor "Ram's Horn" manifold, like our car.
I understand there is one in a Museum in Texas, and I presume the Mormon Meteor was another. I saw that the 1334 Rollston Limousine and the 1933 SJ Brunn Riviera Convertible Sedan that appeared in the Pebble Beach Concours d'Elegance last August both had it.
That makes five. Does anyone know about any others?

Dick Stewart
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