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waynem 
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Joined: 03 Aug 2011
Location: Milwaukee WI
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 Topic: Model B horsepower & carb question
Posted: 13 Aug 2011 at 5:44pm |
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This is my first tractor a 1940 Model B. I would like to order a carb kit it is a Zenith carb where do I find the carb numbers so I can order the correct kit? 2nd question I have been reading that there are 2 different horsepower ratings I think 39hp & a 20hp how do I find out the hp rating? As always everyone is so helpful to me because I am so new to this stuff thanks in advance.
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MNLonnie
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Location: Baxter MN
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Posted: 13 Aug 2011 at 5:49pm |
The hp would be more like 15 and 20 and yours would be 15 because it's the BE motor instead of CE. There is a round tag on the top surface of the carb toward the engine with the model # on it.
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Waukesha B, B, IB, G, styled WF, D15, 615 backhoe, 2-Oliver OC3's, 4 Ford Model T's, 3 Model A Fords, AV8 Coupe, AV8 Roadster, 1933 Ford Wrecker
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steigerbro24
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Posted: 13 Aug 2011 at 6:29pm |
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What do you mean by a BE engine? My B is a 1944 model.
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MNLonnie
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Posted: 13 Aug 2011 at 6:32pm |
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A 1944 would have a CE motor. The BE is 116 c.i. and the CE is 125 c.i. 1943 was the year they changed, all the C's and CA's had CE motors.
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Waukesha B, B, IB, G, styled WF, D15, 615 backhoe, 2-Oliver OC3's, 4 Ford Model T's, 3 Model A Fords, AV8 Coupe, AV8 Roadster, 1933 Ford Wrecker
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Bill Long
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Posted: 13 Aug 2011 at 6:39pm |
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Wayne M, First Congratulations on obtaining my favorite AC unit, the B. Listen closely to what is said above. They are accurate. If you need a Carb. kit you can contact any of the sponsor's of this site and they will be glad to help.
Let us know if there is any further assistance needed.
Take good care of my favorite.
Good Luck!
Bill Long
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waynem
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Location: Milwaukee WI
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Posted: 13 Aug 2011 at 6:49pm |
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norm[ind]
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Posted: 13 Aug 2011 at 6:53pm |
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we all the carb kits for zenith carbs 1-800-254-3116 we ship us mail
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CTuckerNWIL
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Posted: 13 Aug 2011 at 8:35pm |
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Welcome to the forum.
There is really no way of knowing what internals are in your engine without checking bore size. It more than likely was overhauled at some time in it's life and could say BE on the block but have 125 cubic inches.
Take it to a tractor show and belt her up to a dyno.
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Ken in Texas
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Posted: 13 Aug 2011 at 9:55pm |
CTuck is correct. Standard 3 3/8 liners and 3 7/16 overbore liners and pistons will slip right into a BE engine block. If you can't find the BE engine block SN in the left hand engine flange look on the back of the block right near the top below the head.
If you suspect a engine swap was made a rule of thumb is. A 38 B block casting number should end in a 9 or a 10. A 39 B block casting number should end in a 11. 40 a 12. 41 a 13 and so on. This pattern seems to hold true on Bs and Cs up thru the 40s. Some tractors produced early in any year may have engine block casting codes from the previous year.
Most heads have a actual casting date in raised numbers in the bottom of the oil galley.
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Jeff Z. NY
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Posted: 14 Aug 2011 at 7:25am |
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Most kits being sold are pretty much worthless.
They have a new needle valve and seat with a new gasket.
Someone is selling a better kit.
I bought one years ago from a person but I can't remember who it was.
His kit had alot more new parts along with 2 new shafts with brass shaft bushings and shaft seals.
Someone on here might know who he is.
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Dick L
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Posted: 14 Aug 2011 at 9:15am |
The BE had 3 1/4" pistons, The CE had 3 3/8" pistons. The only difference in the two engines was the pistons as far as HP. You will not find one out of ten BE engines that still have the 3/1/4" pistons still if that many. The low compression BE engines had either dished piston tops or a flat top that was shorter but still 3 1/4"
Some engines with 3 3/8" pistons had pistons in them that did not come all the way to the top of the block/deck.
After 70 years the only way to tell for sure is to remove the head and measure. You might be surprised as to what you would find.
Most carburetor problems are dirt. Dirt that can not always be seen with your eyes.
Spray can carburetor cleaner is good for cleaning your hands and the outside of the carburetor not the inside of a carburetor. Consumer protection dontchyaknow!
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Jeff Z. NY
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Posted: 14 Aug 2011 at 10:12am |
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Right you are.
You have to manually remove the dirt and that is easier said than done.
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waynem
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Location: Milwaukee WI
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Posted: 14 Aug 2011 at 10:47am |
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Thanks to all for the info. I found the engine numbers on the back of the block they are BE2754 Is this the correct engine in there or a replacement?
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Steve in NJ
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Posted: 14 Aug 2011 at 12:17pm |
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We have carb kits in stock. Also offer carb rebuilding services if interested...
Steve@B&B customcircuits@gmail.com
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Ken in Texas
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Posted: 14 Aug 2011 at 1:43pm |
waynem
If the BE engine number is that low and on the back, it probably came new in a 38B. Check the casting numbers (The raised numbers cast on the Left side of the block) and see if the last 2 numbers are 1 0. The early block would not have the tapped holes for a generator bracket on the front left side. Most if not all the blocks cast in 1940 had the holes tapped for genny mounting.
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CTuckerNWIL
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Posted: 14 Aug 2011 at 6:37pm |
 waynem wrote:
Thanks to all for the info. I found the engine numbers on the back of the block they are BE2754 Is this the correct engine in there or a replacement? |
That engine is out of a 38 B. What is the tractor number stamped by the shifter? Do you know for a fact the tractor is a 1940? That would put your tractor number between
B33502 and B49720. It is not uncommon after 70 years to find a tractor with an engine out of another tractor.
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waynem
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Posted: 15 Aug 2011 at 7:32am |
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Ken & CTucker the BE # is BE2754 the # on the left side of the engine AM-2916-10 the tractor # is B41011 the carb # is206989 on the outside & 8561 on the inside according to Jeff Z he says that carb was used in 1938 & 1939 aby more info would be helpful.
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Jeff Z. NY
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Posted: 15 Aug 2011 at 7:41am |
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From my records that casting # ending in 10 would make the engine a 1938.
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Ken in Texas
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Posted: 15 Aug 2011 at 12:09pm |
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The Transmission is a 1940. Does it have a electric starter? Most 40s do. How is the generator bolted on. I ask because special brackets have to be fabricated to mount a generator on a tractor with a 38 B engine, which is what you have.
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Ken in Texas
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Posted: 15 Aug 2011 at 12:26pm |
Tall Spindle adjustable front axles became available in 1940. Most if not all 40s with this axle also had 5 stud adapter hubs and 5 hole semi-dish reversable rear wheels.
 Is your 40 equiped this way? |
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waynem
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Posted: 15 Aug 2011 at 8:33pm |
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No my 1940 is not equipped like that I have no starter or generator or battery box & my rear tires do not have 5 bolt hubs like that.
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Ken in Texas
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Posted: 15 Aug 2011 at 9:05pm |
You may have a 38 or a early 39 tractor with a 1940 transmission swaped in . Do you have a water temp gauge? 38 Bs did not have one. There is no hole near the front of the hood behind the radiator cap for one. The notches in the rear wheels for the valve stem? Are they V shaped or like a half moon. 38s are half moon shape notches. Are the front wheels 5 hole automotive style? 1940. Are the hubs rivited to the wheel centers? late 38 and all 39s. Are the front wheels with hubs a one piece of cast iron with a steel rim? Early 39. Posting some pictures would help. It must have handbrakes too I bet.
Could be a 38 front half with a 40 rear half. We will figure it out soon. Ken
Someone may have built your B out of good parts from several Bs.
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Jeff Z. NY
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Posted: 15 Aug 2011 at 9:55pm |
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I guess it really doesn't matter much as long as it runs.
Remember "One Piece At A Time"
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waynem
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Posted: 16 Aug 2011 at 7:32am |
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Thanks I will check all these things out after work. I will also have to figure out how to post pictures.
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waynem
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Posted: 16 Aug 2011 at 7:34am |
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Yes it has hand brakes also.
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waynem
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Posted: 16 Aug 2011 at 7:35am |
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Also it has a temp gauge which does not work 1 more thing to figure out.
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Charlie175
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Posted: 16 Aug 2011 at 8:25am |
waynem wrote:
Also it has a temp gauge which does not work 1 more thing to figure out. |
they are cheap enough to replace. Hopefully is has not corroded/rusted itself to the mount.
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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JimD
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Posted: 16 Aug 2011 at 8:59am |
Not sure that Jeff is thinking of us, but I have been very happy with our kits. Here's a photo of one sprawled out.
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Owner of OKtractor.com PM for an instant response on parts. Open M-F 9-6 Central. We have new and used parts. 877-378-6543
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waynem
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Posted: 17 Aug 2011 at 8:26am |
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waynem
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Posted: 17 Aug 2011 at 8:27am |
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I will get better pictures later I am taking it to work to show off. I will also figure out posting pictures better.
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