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Discussion Forum
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Allis C rebuild question

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fryguy_21

01-14-2008 21:49:58




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I bought a semi restored 1944 "C" around 6 months ago, it initially ran great! I have had some problems lately with loss of power. I have been noticing oil leaking through my spark plug holes on #2&3 cylinders. Is this a sure sign of needing a rebuild? If so could I replace my "C" motor with a "CA" without any major modifications? I have noticed that rebuild kits are so expensive that you can by a nice running engine for less! I am a new tractor owner and I would like any suggestions you may have.

Thanks!!

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Gordon in IN

01-18-2008 15:51:27




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 Re: Allis C rebuild question in reply to fryguy_21, 01-14-2008 21:49:58  
The CA engine should "bolt right in" everything should fit and function, linkages etc. should be the same.

The CA engine is a much "better" more modern engine with full pressure oil lubrication on the main bearings, camshaft bearings and the Connecting ROD bearings. (The original C engine has oil pressure lube to the main bearings and cam bearings only with the connecting rods lubed by a "stream or spray" of oil from holes in the camshaft.)

The CA engine can have the horsepower increased with an increased bore cylinder and high compression piston - sleeve set and still hold up well. Hope that this helps.

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Ted in NE OH

01-15-2008 06:47:53




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 Re: Allis C rebuild question in reply to fryguy_21, 01-14-2008 21:49:58  
Are you sure oil is coming fron spark plug hole and not driping from valve cover. Before you condem the engine do a compression test.



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Dandy Don

01-14-2008 22:21:24




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 Re: Allis C rebuild question in reply to fryguy_21, 01-14-2008 21:49:58  
Yes, CA is the same engine.Both are 125 cubic inche motors. Will be a bolt in thing. Everything is the same. Good Luck. Don



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