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Discussion Forum

CA and B compatibility

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09-29-2002 20:49:53

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Can anyone tell me if the engines and rear end of these types of tractors will bolt together? I realize I would have somewhat of a b#st#rd tractor but...I have a B that needs a trans and a CA that needs an engine so you know!

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10-01-2002 16:06:13

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 Re: CA and B compatibility in reply to Chris, 09-29-2002 20:49:53  
the B and CA used the same motor. even if you have the oldest BE motor in the B, they will still interchange. The CA has a 4 speed transmission, but same bolt pattern. they have the same bevel gear box. axles on the B are narrower, but same bolt pattern. I saw a CE motor with a 4 speed (CA) transmission, with two narrow rear axle drop boxes (from a B) last summer. nice looking tractor. FOr you info the CA motor and CE used in the C and B are different internal and you cannot interchange some internal parts, but as a complete unit, no problem.

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09-30-2002 05:27:25

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 Re: CA and B compatibility in reply to Chris, 09-29-2002 20:49:53  
The external dimensions on the BE and CE blocks are all identical. The all have the the same stroke and crankshaft. The BE engines (found in older B's) had a smaller bore, but the larger bore was accomplished by using thinner sleeves and a larger piston, a drop in conversion for the older engines. The only differences would be some older engines on tractors not equipped with an electrical system didn't have the holes drilled for mounting a generator and the governor is a little different depending on whether or not the tractor had a magneto or distributor. Otherwise it's a bolt in switch.

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John W.

09-29-2002 21:13:27

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 Re: CA and B compatibility in reply to Chris, 09-29-2002 20:49:53  
Chris; The answer is,,,, sometimes. It depends on the year of both, they must be, generally within the same decade of production. there are exceptions and lots of these kinds of pairing where done. You will have to measure the bolt mounting spread on both engines to be sure they are the same, as well as the crank shaft center line, they MUST match exactly. C model engine work every time because the CA&C share common engines. The B engine has a smaller bore and stroke, therefore less horse power than either the C or CA. If you have a later production B and an earlier CA it should work,but, do the math, the measurments will tell all. Good Luck.

John W.

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09-30-2002 19:19:10

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 Re: Re: CA and B compatibility in reply to John W., 09-29-2002 21:13:27  
Your talking out your hole again.

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