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Case Tractors Discussion Forum
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Boring a SC

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walter

02-02-2004 09:28:36




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I want to convert my SC 3 5/8 bore to 3 11/16 bore, I already have the pistons. Any problems boring my old sleeves which are still in the block to that size? Can this be done using a portable boring bar so I don't have to split the tractor?




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C. Amick

02-03-2004 09:30:50




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 Re: Boring a SC in reply to walter, 02-02-2004 09:28:36  
DCTom says that he has bored DC sleeves with them removed from the block. He says he used a boring bar and a heavy duty boring bar clamp. The clamp needs to be placed around the top of the sleeve where the metat is thicker so that you avoid distortion of the sleeve. I was looking for a set of SC sleeves that I could have bored to 3-11/16" and never found any in usable condition. They are always pitted really badly on the exterior. Don L. has a supplier that makes sleeves. I am waiting on a set from him.

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Flambeau Red

02-02-2004 18:57:08




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 Re: Boring a SC in reply to walter, 02-02-2004 09:28:36  
I also have a reboring question regarding an SC. Has anyone rebored the old SC block (3 1/2" bore) to a 3 5/8"? JI Case came out with the 3 5/8" bore in 1953. I compared the engine parts between the earlier block and the newer and the part numbers match up with the exception of the sleeves and the pistons. I'd like to hear from Mike Schotte, Les Fortunate, Case Poor, John Saeli, C. Amick, Todd Hamilton, Dr Cy Kosis, Mr Hainey and anyone else who is working on SCs.

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george md

02-02-2004 12:09:50




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 Re: Boring a SC in reply to walter, 02-02-2004 09:28:36  
Walter, Yes you can bore them in the block and in
the block is the best place to bore them. With that
said there are 4 reasons to remove the block and
crank 1 to clean out the boring chips, 2 - to clean
out the honing grit ( needs to be hot tanked or
run thru wash cabinet) 3- the liners are above the
deck ( either all but the one you are boring or set the bar on parellels ) 4 - you need to replace the orings on the liners anyhow .
A small amount of honing grit left in the block or
in an oil passage would be a disaster as that engine
does not have a full flow oil filter sys . I bore
and sleeve liners that are no longer available ,
but not in the tractor .

george

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