Brown serial identify

brews4me

New User
Can someone help me with this ID plate?

Year of tractor?
is 10/49 really the grea ratio?
motor specifics?

Photo attached!

Thanks much Jim
a211731.jpg
 
219 cubic in David Brown engine. 4 cylinder/55 cubes per hole... 3 15/16" bore in block(no sleeves), 4.5" stroke, 3 main bearings.

Many have had issues with crankshaft braking. In most cases it seems to be lugging the engine as the cause(hard pulling at less than 1600 rpms). I think it is a harmonics issues. Other issue is cranks that were often reground with the wrong radius in the corners. Moral of the story is, if you are going to work it hard, keep the revs up.

The final drives in yours have a 10 tooth gear driving a 49 tooth. They also came with 9-50, and 11-49.

Other models have different ratio options. 8-37, 11-58...
 

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