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John Deere Tractors Discussion Forum
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Jug Swap

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Ben Lanpi

05-03-2007 16:14:39




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Will the clylinder block from a B ser# 201 + fit on a B with a ser# starting with 174 So a 1944 B have 190 CI (I like it)
Thanks Ben




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Mike M

05-04-2007 07:23:51




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 Re: Jug Swap in reply to Ben Lanpi, 05-03-2007 16:14:39  
I have seen it done by tractor pullers. It does take some major cobulation.

You can also bore your block out to accept the larger pistons from the late B and have the same thing if you put a late B cam in.



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Ben Lanpi

05-04-2007 14:05:55




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 Re: Jug Swap in reply to Mike M, 05-04-2007 07:23:51  
Mike M How far can you bore out a pre 201 ser #B Block, Can I go to a 201 spec plus .125? and I need a 201 plus cam?
Thanks Ben



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Mike M

05-06-2007 09:37:01




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 Re: Jug Swap in reply to Ben Lanpi, 05-04-2007 14:05:55  
I don't really know for sure ? and castings may vary also.

I have just heard of several that were bored from 4 1/2" to 4 11/16" back in the days they were used on the farm and they held up well.



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teddy52food

05-04-2007 05:25:18




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 Re: Jug Swap in reply to Ben Lanpi, 05-03-2007 16:14:39  
I am not real sure, but I think the way the oil is fed to the rockers is different. Maybe someone else can shed some light on this.



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