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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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COCKSHUTT 50

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hummy

11-08-2006 15:44:10




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I tore my engine down to rebuild and found my crank had already been turned .040 on the rods. I have a 262 engine that I'm hoping that I can use the crank,cam and rods out of in this engine. Has anyone had any trouble using the cast iron pistons doing this? Or maybe I'm opening another can of worms.




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Error5

11-09-2006 10:53:43




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 Re: COCKSHUTT 50 in reply to hummy, 11-08-2006 15:44:10  
You can use the pistons if you clearance them either by milling some off to clear the head or useing a thicker gasket or both .You will need to use the 262 cam with the 4 3/8 crank for clearance also works well .E mail me if you want I dont want to give out all the secrets on here.



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hummy

11-08-2006 19:09:24




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 Re: COCKSHUTT 50 in reply to hummy, 11-08-2006 15:44:10  
My 50 still has the 273 BUDA engine. It is a 3 3/4" bore



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J Schwiebert

11-09-2006 04:12:34




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 Re: COCKSHUTT 50 in reply to hummy, 11-08-2006 19:09:24  
Bore is not the problem. The 262 has a longer stroke than a 230 and or a 273. Put the pistons in and they will stick out of the top of the block 1/8 of an inch when they are at TDC. I think your 50 has a 4.125 stroke and a a 262 has a 4.375 stroke. You can do the math to double check me if your are bored today and need a chalange. Questions? J. Now if you want to go pulling you make a step in the right direction.

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J Schwiebert

11-09-2006 08:49:28




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 Re: COCKSHUTT 50 in reply to J Schwiebert, 11-09-2006 04:12:34  
That is true, but a 262 has a 4.475 stroke and depending on how you rounded it off your cubic inches now goes to close to 290 cubic inches. I used to know a guy that pulls one and it has a little over 300 cubes using that crank.



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Tramway Guy

11-09-2006 12:36:18




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 Re: COCKSHUTT 50 in reply to J Schwiebert, 11-09-2006 08:49:28  
You are right....as usual.
The stroke on the 262 is 1/4" longer.
Wonder if the 230 crank would work. There are probably a few out there.



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Tramway Guy

11-09-2006 06:49:18




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 Re: COCKSHUTT 50 in reply to J Schwiebert, 11-09-2006 04:12:34  
If I use the 3-3/4" bore with 4.125" stroke, I get 273.35 cubic inches. So maybe they are the same crankshaft.
The 273 engine was a non-sleeved engine, so they could get bigger pistons in it.



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J Schwiebert

11-08-2006 17:55:17




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 Re: COCKSHUTT 50 in reply to hummy, 11-08-2006 15:44:10  
My thinking is a little fuszzy at the minute because of the stuff I had to absorb at this meeting, but I think a 262 has a larger bore and what is bad for you in using your old pistons is the stroke is longer. I can check early in the morning.



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