Re: Farmall B cooling system - Pressurized or not

Posted by Hugh MacKay on July 08, 2006 at 03:44:05 from (216.208.58.124):

In Reply to: Re: Farmall B cooling system - Pressurized or not posted by Roger46 on July 07, 2006 at 19:28:49:

Roger: I do know the difference in those rads. I can also tell you the main reason for the block change at serial number 310300. The block, part number 354898 is a C-123 block and was used at that time in Super C with a water pump. Those blocks that were used in Super A and had thicker sleeves giving the same 113 cubic inch engine, and without a water pump.

Since the larger C-123 piston and sleeve kits will fit in the old C-113 block used in early SA, also A, B and C. Therefor the changes made in the block must have been for cooling purposes. When I say this I'm thinking more of water pump being reason than presurized versus non-presurized. That is not to say what you've done will not work fine.

Back to the block, and why IH did the thicker sleeves on Super A tractors. It was less expensive to manufacture sleeves than cast two separate blocks.

The main reason I said it was unlikely anyone would put a presurized rad on a B is there were only roughly 25,000 of those presurized rads made. You were quite lucky to find one, not a lot of Supers have been junked yet.

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