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Tractor performance at high altitude

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bryan h

05-02-2003 10:28:21




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Need help!!! Need to get a tractor. I am at 5000ft. elevation. Fairly unfamilar with tractor mechanics and my question is how will some old iron like 8Ns or ferguson TO20's handle the altitude (carbs, etc.). Are carb kits available for these machines?




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G Taylor

05-03-2003 16:12:30




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 Re: Tractor performance at high altitude in reply to bryan h, 05-02-2003 10:28:21  
Your tractor will have a longer rolling distance and have to have greater ground speed before it will take off compared to sea level operation. Recomend the pilot to breath oxygen if you take her over 10,000 ft. Engine cooling efficincy will be reduced as the thinner air cannot carry heat away as fast. Somewhat compensated by the reduced power output if naturaly aspirated.



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Fudd@work

05-02-2003 18:59:53




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 Re: Tractor performance at high altitude in reply to bryan h, 05-02-2003 10:28:21  
I live at 8500 Ft. and use a JD 50 and a Farmall 400. You can tell they don't have the power they should but I don't push them as hard and still get everything done. Do custom haying with them.



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G-MAN

05-02-2003 18:08:41




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 Re: Tractor performance at high altitude in reply to bryan h, 05-02-2003 10:28:21  
I worked as a service tech at a New Holland dealership that was at about 4300 ft or so elevation. Those older tractors seemed to handle it fine. You obviously won't make the power you'll have at sea-level, but just lean out the mixture some so you're not running too rich. The high-altitude pistons and the like are used to compensate for the lower atmospheric pressure at higher altitudes, but regular engines will run just fine with a little less power, because you can't burn as much gasoline. Fuel economy should be better at your altitude. A good tune-up should have you running fine.

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RAB

05-03-2003 10:58:47




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 Re: Re: Tractor performance at high altitude in reply to G-MAN, 05-02-2003 18:08:41  
G-MAN. Agree with most you said except I would think that the fuel economy will go down as the reduced effective compression pressure will lead to a lower thermodynamic efficiency of combustion. One would either need high compression pistons or a high compression head to compete on economy with the same, at sea level.
Regards, RAB



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BobG in VA

05-02-2003 12:19:56




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 Re: Tractor performance at high altitude in reply to bryan h, 05-02-2003 10:28:21  
Interesting Question, I'm not sure about 8Ns but Farmall's ('57 230 anyway) could be ordered with High Altitude FireCrater pistons. My 230 has them, however I'm at about 250' above sealevel so, my 230 puts out about 4-5 ponies more than the "flats" as compression is boosted somewhat. Sooooo, you may want to look into a Farmall if you want the possibility of HighAltitude stuff. Hope this helps. BobG in VA

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