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Case Tractors Discussion Forum
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Case 311 Gen'l Purpose engine/ block cracked

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Mike Winkler

11-25-2006 12:57:32




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I'm wondering how to handle a problem. My 1955 300 Series Case needed a rebuild which we started, have had crank reconditioned and when we knocked out the sleeves found that the block is cracked between the inner cylinders. It appears that the condition existed since a freeze situation(years before I owned it) which resulted in a weld-up of a water channel on the block elswhere, and the subsequent head work and new head gasket were installed and the tractor has been used by me for the last 12 years apparently with the cracks in the block. Is this possible? I now must decide if I want to have this block welded and machined to use again, or buy a salvage block, find a used running engine, buy a long block rebuild or part out the rig and find another tractor to blow snow and hog brush. I am open to suggestions. Mike

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varmint

11-25-2006 14:42:48




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 Re: Case 311 Gen'l Purpose engine/ block cracked in reply to Mike Winkler, 11-25-2006 12:57:32  
guess you are saying the block is craked at the bottom of the sleeve? that won"t bother the engine at all. crack atop is adifferent story.



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Mike Winkler

11-27-2006 16:39:54




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 Re: Case 311 Gen'l Purpose engine/ block cracked in reply to varmint, 11-25-2006 14:42:48  
Thanks for the response, I guess I wasn't clear enough. It is in fact cracked at the top, the surface that interfaces with the head gasket. It appears that it was that way for a long time but I never had any fluids in the wrong compartment.



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Mike Winkler

11-27-2006 20:32:12




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 Re: Case 311 Gen'l Purpose engine/ block cracked in reply to Mike Winkler, 11-27-2006 16:39:54  
I have called around and there are many Case VAC parts available. I am not sure if the Case 300 series I have is of the VAC group. My parts manual and measurement indicates the piston is 3 3/8 inch not the 3 1/4 inch the VAC specs indicate. I believe it is a 1955. Is there some overlap between production of the VAC engine and the 300 engine?



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C. Amick

11-27-2006 17:13:32




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 Re: Case 311 Gen'l Purpose engine/ block cracked in reply to Mike Winkler, 11-27-2006 16:39:54  
The crack shouldn't hurt anything as long as the head gasket seals good around the cylinders. You might want to put a little J.B. Weld in the crack.



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cnj152

11-30-2006 19:06:28




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 Re: Case 311 Gen'l Purpose engine/ block cracked in reply to C. Amick, 11-27-2006 17:13:32  
We had a 300 with cracked block at the top with no problems. Head gasket sealed the area. I would not worry.



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