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Farmall & IHC Tractors Discussion Forum
Show Parts for Model:

W4 motor

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Author  [Modern View]
toymaker 27

11-21-2012 12:41:41
172.218.208.223



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What reading should a compression test indicate?




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athol carr

11-21-2012 16:15:47
115.188.3.223



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 Re: W4 motor in reply to toymaker 27, 11-21-2012 12:41:41  
If the engine is Distillate or Kerosene burning the compression ratio is 4.5 or 4.4 to 1.0 not 5.9 to 1.0 The Blue Ribbon GS-1356 engine tune-up manual so the pressure would be about 95 psi at fast cranking speed for distillate engines and 120 psi for gasoline engines.



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CNKS

11-21-2012 14:36:23
216.144.104.128



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 Re: W4 motor in reply to toymaker 27, 11-21-2012 12:41:41  

Compression on a new or overhauled gas engine is about 125.



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CNKS

11-21-2012 14:39:00
216.144.104.128



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 Re: W4 motor in reply to CNKS, 11-21-2012 14:36:23  
Change that to 120 after checking weberstractorworks.com.



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gene bender

11-21-2012 14:30:05
207.177.56.85



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 Re: W4 motor in reply to toymaker 27, 11-21-2012 12:41:41  
Its not the reading as much as having all cycls pretty close to each other should get 75-90 or so



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gene bender

11-21-2012 14:30:05
207.177.56.85



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 Re: W4 motor in reply to toymaker 27, 11-21-2012 12:41:41  
Its not the reading as much as having all cycls pretty close to each other should get 75-90 or so



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The Red

11-21-2012 13:26:00
69.246.205.0



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 Re: W4 motor in reply to toymaker 27, 11-21-2012 12:41:41  
That is a 5.9 to 1 compression ratio on that engine. Should be around 110 psi.



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