stromberg carburetor

[blastermike]

hi, i am looking for a M series stromberg carb for an early 20's pierce arrow truck , carb type MP 2 carb is brass, hoping someone can help, thanks mike.

[Guest jaanalla]

I don't know if it would work, but I have a one bl. Scheibler Model S updraft carb that is

brass.

John Analla

San Diego, CA.

(858) 278-4084

[blastermike]

hi john, thanks for the offer but i'd like to try to find the correct stromberg carb if possible as i've been told adapting one can sometimes prove quiet costly,and not allways satisfactory, thanks again mike.

[carbking]

Mike - I have never seen a Stromberg type MP-2 carburetor. I do have its larger brother, the MP-3. Depending on space considerations, it MIGHT (or might not) be possible to redrill the mounting holes, either in the carburetor or the intake manifold to accept the MP-3 bolt pattern (2 15/16 instead of 2 11/16 inches) and install the MP-2 calibration (venturi, jets, etc.) in the MP-3.

As you know, the air intake on the MP-2 is set at a 90 degree from normal, specifically for use on the Pierce.

Consulting the Stromberg files, the entire production of the MP-2 carburetor went to Pierce for the 3 ton truck. There is an entry in the files that an experimental MP-2 was built for an industrial company (Vulcan Iron), but no record that it ever made production.

Good luck in your search.

Jon.

[blastermike]

hi jon, thanks for the advice, i realise that it is going to be a long shot trying to find an MP 2 carb, i did however find another pierce arrow 2 1/2 ton truck in CA which was missing the radiator aparently it had been stolen of the truck a few years back, the owner would not sell the carb seperately, and i wouldnt blame him for that knowing how few were made, i probably will have to consider adapting another updraft carb, but i have some time before i start restoring this truck, the MP 3 is a very large carb and from memory has a 4 bolt flange the MP 2 is 2 bolt, maybe it could be attached by a adaptor plate? something to consider, cheers mike.

[carbking]

Mike - someone has given you some erroneous information.

The large 4 bolt carburetor is the one ostensibly produced by Pierce, and yes, it is fairly large.

The MP-3 has a conventional 2 bolt flange. The "3" means it conforms to S.A.E. carburetor stands for a S.A.E. size three carburetor. The standard bolt pattern for a size 3 is 2 15/16 inches center to center. The "P" meant Pierce.

As stated before, I have never seen an MP-2; so cannot make a direct size comparison. However, with the standard Stromberg M series, the size 3 unit is approximately 20 percent physically larger than the size 2.

The MP series is quite unique in design. I will try to pull one of my MP-3's, and picture it for you. Perhaps the picture will also jog the memory of other readers.

Jon.

[carbking]

Mike - here are three views. Since the design is unique, hopefully someone viewing these pictures may be able to help you. The light wasn't the best, so the MP-3 doesn't show well in the box in the first picture. The MP-2 in pictures should look like this, except with an MP-2 designation.

http://www.thecarburetorshop.com/MP_3_1.jpg

http://www.thecarburetorshop.com/MP_3_2.jpg

http://www.thecarburetorshop.com/MP_3_3.jpg

Jon.

[blastermike]

hi jon, thank you for the pictures and advice, i had thought the mp 3 was a large 4 bolt carb as i had been offered one which was advertised as a pierce arrow truck carb, but the 2 bolt one you have pictures of is definately a lot closer in size to what i am looking for, in your opinion jon can the mp 3 you have be reduced by 20 % to match the flow of a mp 2, if i remember correctly the flange bolts are about 2 1/2 or so inches centre to centre, it wouldnt take much to make a adapter plate,i'll check that tommorow and let you know, cheers mike.