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Farmall & IHC Tractors Discussion Forum
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Compression readings on Super M

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NC Mike

04-06-2008 16:26:47




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Took a set of compression readings on the sm today. The tractor was warmed up and all readings were at these pressures in 3 compression strokes. All held the readings with no loss of of pressure. #1 130 psi, #3 120 Psi, #4 130 psi, #2 128 psi. How would you rate these readings?




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CNKS

04-06-2008 17:51:59




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 Re: Compression readings on Super M in reply to NC Mike, 04-06-2008 16:26:47  
# 3 is borderline, 117 would be down by 10%, (90% of 130) but if it was mine I would do nothing until it uses excessive oil. Powerwise you are fine. If it has step head or fire crater pistons, you are down some.



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DCW

04-06-2008 16:34:41




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 Re: Compression readings on Super M in reply to NC Mike, 04-06-2008 16:26:47  
Perfect.



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