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Farmall & IHC Tractors Discussion Forum
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M numbers puzzle

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Adam Whitson

10-18-2004 11:58:12




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I have an M, found these number on top of pistons. Can anyone tell me if they are original or was it rebuilt? Is this a super M kit? Firecraters?

Pistons: 374265-R1 B CAM-Z16

KBK 233471 X1 (Engine matches)
BLOCK: 6722 DJ 4 6*12*T
Head: 8060-DB
Front Bolster: 9141-DC 5*26*T
Front Gear Cover: 6378-DD




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DWV

10-18-2004 13:23:14




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 Re: M numbers puzzle in reply to Adam Whitson, 10-18-2004 11:58:12  
Yes its firecrater piston.Never saw a M in that serial # range that tractor and engine serial #
match.Not to say it couldn't be.



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Ronald

10-18-2004 12:54:33




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 Re: M numbers puzzle in reply to Adam Whitson, 10-18-2004 11:58:12  
I believe a M came standard with a 3 7/8's bore. Super M's were 4 standard. If the piston tops are flat and 3 7/8 bore, then they are the orginal size. Fire crater pistons have humps on top that go up inside the fire chamber of the head. These increase the compression ratio of the engine.



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