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Super C Crank Bearings

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Hartford in Beeton

04-08-2007 16:51:29

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I have removed the crank on a Super C engine and on the underside of the rear main bearing are the numbers 35580 1/3 DB L-200 1 51.

Are these bearings std, or undersized 0.01, 0.02 or 0.03?

If I use the Tisco rebuild kit on this website and use the 3 1/4 overbore pistons (3 7/16 bores, will the thermosiphon cooling of my Super A be able to cool the added horsepower/displacement?

Thanks for your help.

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El Toro

04-08-2007 19:23:27

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 Re: Super C Crank Bearings in reply to Hartford in Beeton, 04-08-2007 16:51:29  
Take that crankshaft to your local auto machine shop and have them measure it. It may need to be polished or ground undersize. They can supply the correct insert bearings too.

Your tractor should have a water pump for circulating the coolant. I don't think using an overbore kit will cause cooling problems provided
your block is thoroughly clean and the radiator isn't plugged. That block area around where the new sleeve seals are installed needs to a good cleaning. Hal

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Hartford in Beeton

04-08-2007 19:36:52

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 Re: Super C Crank Bearings in reply to El Toro, 04-08-2007 19:23:27  
I dont see any markings on the other side of the bearing indicating std 0.01 etc? I was only wondering if the crank had been reground before.

The engine is out of a Super C but I bought it to go into a Super A. The Super A does not have a water pump. That is why I am a little concerned with the increased displacement and the cooling of the thermosiphon of the SA.

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El Toro

04-09-2007 03:50:02

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 Re: Super C Crank Bearings in reply to Hartford in Beeton, 04-08-2007 19:36:52  
Those inserts usually have markings on them to tell if they're std. .001", .002" or .010" etc.

Close tolerance on these bearings determine good oil pressure. That's why I recommended having your machine shop to measure it. You could still put a water pump on your engine some of the later Super A's had water pumps. Hal

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04-08-2007 17:48:38

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 Re: Super C Crank Bearings in reply to Hartford in Beeton, 04-08-2007 16:51:29  
If you look on the other end of the shell, do you see std, +.003, etc ? If not, it is best to mic the crank. No matter what bearings were in it, you need to know what fits now.

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