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Allis Chalmers Discussion Forum
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Straight pipes

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Guyzoo

01-13-2006 05:53:30




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Hi, I would like to know if you can hurt an engine by putting on a straight pipe?? I would like to put one on my WD an on my Farmall H.
Would it be harder on the engine or the only thing it is harder on is my ears LOL
THANKS A BUNCH FOR YOUR OPINION
(I use it for plowing snow)




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Pat Cruise

01-13-2006 14:30:37




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 Re: Straight pipes in reply to Guyzoo, 01-13-2006 05:53:30  
I used to pull a bone stock wd allis with a two and five sixteenths straight pipe on it from the manifold,However I machined a cone out of steel that was a half inch smaller than the id of the pipe and welded it in the pipe just above where the reducer came out of the manifold.It was very loud but I had no problems pulling against JD's or Ollies and keeping up with them. Still had just enough back pressure too.

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Zonie

01-13-2006 13:13:37




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 Re: Straight pipes in reply to Guyzoo, 01-13-2006 05:53:30  
I know that a straight pipe on my farmall H hurts the lugging power, I can pull better if I leave the muffler on the tractor.



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D17JIM

01-13-2006 06:56:44




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 Re: Straight pipes in reply to Guyzoo, 01-13-2006 05:53:30  
When Dad bought a new series IV D17 in 1965 I was 15 and bought a straight pipe for it and it ran fine. The 17 was our only tractor other than 2 wd45's. Dad didn't like the pipe so I always got to drive the 17. But I know the 3 years on that tractor did not help my hearing !!!!! ! Dad put the muffler back on as soon as I left home for college. Your choice, but it won't hurt the tractors. WHAT DID YOU SAY !!!

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old

01-13-2006 06:43:56




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 Re: Straight pipes in reply to Guyzoo, 01-13-2006 05:53:30  
Stright pipes are ok to run, what hurts and engine is when you run it with open manifold. That causes cold air to hitthe valves and the causes them to burn before there time. Stright pipes ony cause one problem, that with your ears and if you live in town it can be a problem with the cops and the guy next door. LOL



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BillyinStoughton

01-13-2006 06:23:49




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 Re: Straight pipes in reply to Guyzoo, 01-13-2006 05:53:30  
You are not going to hurt the engine by running a straight pipe. The one thing you need to keep in mind (if the tractor isn"t shedded)is to throw the old coffee can over the stack if you can"t get a rain cap on it. Cause water down the pipe sure will hurt an engine.



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Vince H

01-13-2006 06:01:44




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 Re: Straight pipes in reply to Guyzoo, 01-13-2006 05:53:30  
I am not an expert, but generally with any engine the less back pressure you create, the more power you'll get. By running straight pipes the engine will have to work less to exhale the the exhaust and more of the power from the firing cylinder goes to the tranny. Now I am not expert so I can't say if this would hurt the engine or not, but I don't see why it would.



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BCnT

01-13-2006 07:43:24




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 Re: Straight pipes in reply to Vince H, 01-13-2006 06:01:44  
sorry but yes you do need back pressure for an engine to develop its full horsepower...if you ever have a chance to run your equiptment on a dyno try it with a straight thru type muffler and uncorked...loud dont make HP.
i aint an expert but folks been payin me for over forty years to make stuff run rite.



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