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Allis Chalmers 1937 Model B

A

Anonymous-0

Well-known Member
I am restoring a 1937 Allis Chalmers Model B tractor. After surgicaly removing the old muffler so I could replace it with a new muffler, I looked thru my file of tractor pictures to see what the installed muffler looked like on early Model B tractors. In 6 of the pics I have on early Model B's , not one has a muffler.
My question is, was the muffler not a stock item on tractors of that vintage? I remember riding with my Grandfather on his steel wheeled tractor while plowing in the early 1930's. There was no muffler on that tractor.
I will be glad to hear comments from anyone out there in old tractor land.
 
I think most early Bs had the muffler under the
hood, that's why you don't see them in the pics.
Agco and other AC venders should carry them and
Nelson brand is usually the best.
 
They used an under-hood muffler until i believe 1947 when they switched to the stack. Is your 37 a wakasha??
 
Under hood is available, but have a close look before you purchase. The outlet is short and crimped, and I am told that the muffler can get quite hot and cause the paint to burn on the hood.
Check Tony's Tractors, they stock both types I think.
Cheers,
Rex
 
Our '36 WC and my uncles '37 came without a muffler. I don't see why Allis would put a muffler on a '37 B but I could be wrong. WC's had a short round pipe that was flattened at the outlet end. We didn't do much night work (no lights) but when we did those babies would put out a shower of sparks like you wouldn't believe. It's a wonder we didn't set the whole neighborhood on fire. Mufflers all but stopped the sparks but it wasn't until 1945 or so when we bought a muffler. Now that I think of it, some distant neighbors did set their barn on fire with an Allis C that they had bought new. It did not have a muffler. Sparks fell on some loose hay near the barn and before they noticed it the whole barn was ablaze.
 
My "Hearty Thanks" to those who responded to my 1937 A-C muffler inquiry.I did find a picture of an early A-C Model B with the hood removed and there did appear to be a horizontal elongated sheet metal object above the intake manifold which could be a muffler.
 
Yes the old style under hood muffler is available and yes they will burn the paint on the hood. Dont ask how I know. In my opinion the stack muffler is better.
 
In a 1941 AC "B" brochure I ran into on the net there is a description of the difference between the Standard B and the "Special". The Special added the following list of equipment to the Standard: Electric lights, self starter, radiator shutter, muffler and oversized 9-24 rear rubber tires. There were other Special models available for specialized crops also. In later years, I noticed pictures of B's that all had the tall muffler sticking out of the hood.
 
In response to the question of my A-C Model B having a Waukasha motor, I do not know how to identify a Waukasha. The tractor serial # is 31577. There is no number on the flange near the air cleaner where the Operating Insruction Book shows that the engine number should be.
A recheck of the serial number indicates my Model B to be a 1939 build. My C.H. Wendel "The A-C Story" book shows that the first 96 B's with Waukasha engines were built in 1937.
Not knowing any of the history on this Model B, it is possible that the original engine may have been replaced, possibly even with a power unit engine
 
I hope I am not "beating a dead horse".Two other features on my non electric Model B are:
#1--It has a steel pan seat instead of the
normal box seat.
#2--There is a petcock in the intake manifold
just above the carburetor. I read that
this petcock, to let "cooling air" into the
intake manifold, was most prevelant on the
"B" power unit engine.
 
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