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Re: 861 Vs. 4000

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Author  [Modern View]

12-20-2012 20:40:08

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I've owned both and prefer the four cylinder 4000/8xx models for my purposes. I much like the small size, maneuverability and, expecially low overall height. I do not like the higher CG of the three cylinder 4000.

There is VERY little HP difference between the later 172 powered tractors and the 3 cylinder 4000s. Indeed, the early 192 3 cylinders produce slightly less PTO HP than do the late 172s in tractors with gear transmissions.


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Ultradog MN

12-21-2012 04:31:01

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 Re: 861 Vs. 4000 in reply to Dean, 12-20-2012 20:40:08  
If you like the size of the Priors you would probably like a 3 cyl 4000 SU as there is not much difference in size/height.
I'm curious where you got your HP numbers from.
I always assumed there was at least a 5-8 hp increase on a 3 cyl.

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12-21-2012 07:21:29

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 Re: 861 Vs. 4000 in reply to Ultradog MN, 12-21-2012 04:31:01  
I agree about the SU, and actually looked unsuccessfully for a decent 4000 SU a few years ago. Eventually, I bought a MF.

I once owned a 66 4000 utility SOS gasoline and did not like it for my mowing chores, though it would have made a decent loader tractor due to the heavy front axle and increrased weight.

I mow some very steep ground and around many trees and like the hundred series tractors with horizontal exhaust for limb clearance and low CG. The low seat position is great for driving beneath limbs.

I have CH Wendels Nebraska tractor test book. Most of my performance specs come from it.


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12-21-2012 06:49:29

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 Re: 861 Vs. 4000 in reply to Ultradog MN, 12-21-2012 04:31:01  
Depends on the year... the early 3-cylinders were rated lower than later ones. Nebraska test #892, 4000, SOS/201 diesel:45.6 pto h.p. Nebraska test #893, 4000 8-speed/201 diesel: 46.7 h.p. I don't have the gasser test results handy, but they're likely within 1-2 h.p. That puts them even with a 871/881 and a couple horses behind a 851/861. I'd guess the h.p. went up to 50 @ pto in mid '68, when the 192 gas was replaced with the 201, and the 5000 was bumped from 233 c.i. to 256. (my '72 sales literature lists the 4000 as 50 pto h.p.)
By this point, I'd bet most all those early ones have been rebuilt, and have gotten whatever upgrades they needed to make 50 h.p. (expcept the ones still running a 192)

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