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Farmall A compression

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Gerald

05-14-2003 20:25:11




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I have a Farmall A circa 1939-1940. The engine has not been rebuilt, most likely original. Engine does not smoke. What compression value should I expect? What value would be too low?....Thanks....Gerald




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CNKS

05-15-2003 17:55:55




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 Re: Farmall A compression in reply to Gerald, 05-14-2003 20:25:11  
See tune up specs for the C 113 engine at www.weberstractorworks.com.



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scotty

05-15-2003 06:40:51




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 Re: Farmall A compression in reply to Gerald, 05-14-2003 20:25:11  
Gerald, Gene b is right on all counts, Im sure he has rebuilt a lot more engines than me. I thought I would mention that I just started rebuilding my 49 Super A. I got it running the other day and let it run about 15 or 20 minutes. I then shut it down and removed the spark plugs and checked each cylinder with a compression tester. my readings were all 110 to 115 lbs. Which I was happy to see because I dont have 500 bucks for a rebuild. Hope this helps.
scotty

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gene b

05-15-2003 02:35:13




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 Re: Farmall A compression in reply to Gerald, 05-14-2003 20:25:11  
The most important reading is how close together are the readings dont want 80 50 75 95 for an example. Your readings can all be ;pw or high depending whether all plugs are removed, is the engine warm, are you using a starter to turn over or crank, did you put oil in the cycl first. Better get someone who is experienced with the test to help.



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Gary-Miss

05-14-2003 20:39:40




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 Re: Farmall A compression in reply to Gerald, 05-14-2003 20:25:11  
If it's original AND, if it was a distillate burner, it won't have muchsince they had dish top pistons rather than the flat tops for the gas burners or the high altitudes which have an ice creanm cone on the top with acrater.



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