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Fordson Tractors Discussion Forum

Re: Main Bearing Size ????

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Ramp Rat

09-08-2010 16:19:51

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Cool, than I have room to have this crankshaft turned when I get ready. ;-)

BTW, I've noticed that there are bearing sets sold for .040" undersize???? Can this be true???
Is a crankshaft turned that much worth while?
Thanks, Steve.

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Robert Major

09-08-2010 20:36:20

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 Re: Main Bearing Size ???? in reply to Ramp Rat, 09-08-2010 16:19:51  
Hi steve Not wanting to tread on the toes of the retired crank seems to depend how far the hardening goes into the crank. I have a fordson 6D motor that is at 30 thou and the hardness is all gone she has cut ridges in the crank in no time. 40 over is a waste of time for this but you can buy shells. I have to get her spray welded and bought back to new spec as it wont last again. I think there are some perkins out there that dont take to kindly to grinding atall. It seems that my crank guy has 40 plus under the belt too and experienced a lot of different stuff. He will just say dont bother to bring it just bin it on certain things when I ask. Regards Robert

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Earl -IL

09-08-2010 19:16:51

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 Re: Main Bearing Size ???? in reply to Ramp Rat, 09-08-2010 16:19:51  
If brg manufactures make the bearings, its OK to grind. I have run a crankgrinder since 1957.retired in 2001.

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