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706 806 gas vs diesel- cheap horsepower?

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gdorsey

11-22-2006 16:21:27




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for some reason the majority of tractors coming up for sale here have had gas engines. i need a preferably 70 hp tractor for springtime (trying to plan ahead and save a little $ by shopping around) and was hoping to get a diesel, but they havent been too common. i've never run one of the gas 6 cylinders and i was wondering how much gas they burn compared to the diesel engines of the same class/model. Is there any less power, and are they cheaper to fix than diesels? i imagine they are based on my experience. i hear the 263 in the 706 was a good motor, but i dont know. never run one nor heard one run. also whats a fair value for example a fair 706 with the 263? what might i expect to pay at auction? do they go for less than the diesel with 282 or 310?

how much does a 706 weigh?

thanks!!!

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Jim Allen

11-23-2006 04:56:04




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to gdorsey, 11-22-2006 16:21:27  
I came close to buying a gasser with the thought in mind to make some improvements. Diesel fuel is still more expensive than gas, so the running economy advantage for a diesel is somewhat negated by that.

I considered converting a gas tractor to propane because propane is even cheaper than gas or diesel, though they tend to burn more gallons. I also considerfed converting it to a fuel injection system (a throttle body EFI system) to increase efficiency by 5-10 perrcent by most estimations. In theory, you could convert a gas tractor to run on E85 fuel, which is 85 percent ethanol (burn what you grow!).

For the small farmer that runs few hours per year, a gasser makes more sense. On average a gas engine will use 30 percent more fuel than a diesel. Let's say you use the tractor 50 hours per year. A diesel using 4 GPH for 50 hour would use 200 gallons. The average price around here is $2.55/gallon, so that's $510.

An equivalent power gas tractor would use about 5.5 GPH, so that's 275 gallons. Right now the average proice for gas is $2.20 a gallon so that's $605. a year, an increase of $95.

Lets say the average price of the diesel tractor you want is $6500 for a decent but high hours unit. Looking around you can find find similar HP gassers for about $4500, usually in better shape and with lower hours, a difference of $2000.

How many years at a savings of $95 a year will it take to pay off the higher cost of the diesel by fuel economy alone? My calculator says 21 years for the 50 hour a year farmer.

FWIW, these are the numbers I played with when I made up my mind that I would accept a gasser.I had been looking at diesel tractors and in the HP I wanted, they were in the $6-7000 range for a decent unit locally. In the search, I found a pristine 90hp (green) 4020 gasser with 2500 hours for $4500 (at a dealer no less) and if one of their sales guys hadn't been a total bozo, I'd be runnning it now. A week later, I was driving my very tired 826. It was pretty cheap and it's very economical even by diesel standards, but I've also had to put a fair bit of money and time into it. Objectively, that 2500 hour unit was the better tractor mechanically and it probably wouldn't have had as many (or any)
problems. 'Course I wouldn't have met all you wunnerful red tractors guys either!! And how can you put a price on that!

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Jim Allen

11-23-2006 16:03:52




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to Jim Allen, 11-23-2006 04:56:04  
I was just generalizing here. As far as fuel consumption goes, it will vary a lot from tractor to tractor, but 30 percent is the average difference between gas and diesel engines. Fuel costs seem to vary a lot by region and I used current taxed fuel prices as an example.



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Doc Larry

11-23-2006 15:46:10




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to Jim Allen, 11-23-2006 04:56:04  
Jim,

You may not need to pay that much for diesel. You should be able to buy it for ag use without the highway tax, which puts the price at about the same as gas at the pump. I paid $2.19 for some diesel this morning at a station where gas was about the same. And if you can"t find anyone to sell you the ag fuel, you can probably get a tax rebate when you do your income taxes.



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Hugh MacKay

11-23-2006 13:35:19




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to Jim Allen, 11-23-2006 04:56:04  
Jim: I think you'll find there is greater spread than you indicate between gas and diesel consumption in farm tractors. I've never owned a 6 cylinder gasser, in fact I've only ever seen one, that being a 460. Back in the late 50s early 60s, our Farmall 300, just about satisfied us it would be the last gasser on the farm. When we bought our Farmall 560D we were already using Farmall 300 on a NH 460 haybine and burning 3 imperial gallons of gas per hour. 560D operated the haybine much easier on 1.25 imperial gallons of diesel, and the 656D even hit the 1 gallon per hour mark. on that same haybine. The 300 always broke 3-4 shear bolts everyday, while I never remember changing a shear bolt with the diesels. Diesels never broke shear bolts as they were steady and always one 540 pto rpm. In fact I still have NH 460 shear bolts in my tool box and the 460 haybine has been gone for 33 years.

I will however agree with you on low hour tractors, the gasser will come out ahead in the long run. Diesel needs to be worked, and it takes a lot of work to justify the investment. In fact I'm starting to wonder if we can justify any low hour tractor. These little offsets I have are running just as high repair bills as when I worked them 10 times as much as I do now. I guess it's inflation, least that is what I tell my good better half.

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Hugh MacKay

11-23-2006 02:49:48




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to gdorsey, 11-22-2006 16:21:27  
gdorsey: I see these gassers as excellent candidates for a diesel repower. Very few people have ever been able to afford the gasoline comsumption, thus you find youself with a chassis in much better shape than most diesels. Energy cost rose sharply, shortly after a lot of these were built, thus many of them got put on standby status on a lot of farms, loader duty, etc.

Through the 70s, 80s, and 90s the diesels were the ones that took the hammering, pulling heavy loads for long hours. Not saying you wont find a good diesel, but I'm betting you'll find a lot more gassers with 5,000 hours or less. If you've watched Allan's experience, and I single out Allan as he has taken several 6 cylinder Farmalls and restored them A1 mechanically. You never hear him crying about power train noise from his gassers.

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low budget

11-22-2006 22:29:04




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to gdorsey, 11-22-2006 16:21:27  
From my limited experience, I'd say go with a 806 diesel. Around here (NY) you can by them for $5000 or less. The 361D seems to be pretty easy starting and if the pump isn't turned up it shouldn't be bad on fuel at all. Why bother with a gas engine or a 282D? I have no experience with the 310D. The 706/806 is all the same chassis, so the choice boils down to engine.



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the tractor vet

11-22-2006 21:20:26




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to gdorsey, 11-22-2006 16:21:27  
Well i would recomend getting one a later model 706 gasser with the 291 gasser , but this is the down side of running a 706 gasser ya MUST RUN 93 octain gas . Whenthey are tuned correctly they will do fine on fuel usage i ran a 67 706 gasser for years as my main tractor and pulled 4x16 710 plows with it and got along just fine and could run 10 inches deep in first high in corn ground and 4th low in sod . The tank holds real close to 35 gallon and i could get two to three nights of plowen in running 4 to 6 hours a night . She always seamed to run better at night and i always like plowen at night as long as i had a field opened up first and never ever open a fiel at night under the alfluance of inkilhoil ya won'
t like what ya see in the daylite. At this time my to good friends both run a 706 gasser on is a 67 with the 291 and the other is a 65 with the 263 to 291 update . when we did the update on the 65 it gained a bunch oh Hp. and dropped fuel comp. When i was in busness i bought and sold a ton of 706 gasser and the people that bought them from me just loved them as a chore tractor or a main work tractor . One day while i was eating lunch at the local lunch spot the local deal came in and started raggen on me for having three 706 gasser sitting at my shop and told me that ya can't sell them gasser and i looked him in the eye and said well Frank them three setting up at the shop will be gone by tomarrow as they are the last of the semi load that i got in on monday there was five on the load that time . Now the good part or bad part of all this was that 4 of the 5 came out of the dead row at a dealer only auction and all they needed was new batterys and the chargen system repaired . All had excelant T/A's and engine they just would not run with no juice .

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Thack

11-22-2006 19:46:34




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to gdorsey, 11-22-2006 16:21:27  
I bought a 706g about a month ago and have a 706d to compair too so;

Fuel use; I have pulled wagon, disk, chores and such and the higher cost of diesel evens things out but...I have not put a plow on yet, that might be different.

Power; the D will lug on, the gasser likes to get mad about it, hence the plow disclaimer, but I can"t say for sure yet. But is the power there, yep!

Cheaper to fix yes but the D will go about twice the hours (at least) before overhaul so you could say the gas is just spreading it out. I can"t complain about the 263 but I have no experience with the other.

Price; For a gas that need nothing, not talking about a muffler, front tires or a tear in the seat, but I am talking rear tires, T/A etc, $3,500-$4,500. Diesels seem to bring 2-3k more.

Weight is probably 11,000lbs.

I like mine and I am glad I bought it, it does equal amonts of different work and fits my need fine. If you will be doing mostly tillage go diesel. Another thing, it is an outdoor dog and needs space, if a guy had just a couple acres and used it a lot around the house in the country, the yard at the house in the country would look like a armored school training site.

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Dave in MN

11-22-2006 19:34:33




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to gdorsey, 11-22-2006 16:21:27  
I perfer my 706 gas because I use it exclusively on a 10"X71' wet corn auger. I do mis-use the tractor by not properly warming up engine or letting it cool of long enough before turning it off. I feel that I can get away with more because it is a gas. I paid $1725 for it 5 years ago.



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cadet trooper

11-22-2006 19:06:35




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to gdorsey, 11-22-2006 16:21:27  
What's the fuel tank size on those tractors? I'm thinking somewhere around 15 gallons. If so I guess it's all relative a Toyota Corolla gas tank is 13 gallons and it gets 30+ miles to the gallon it sure makes me feel better than filling my 27 gallon gas tank on my pickup truck I think they should put bank branches at the service stations. All kidding aside I have a friend of mine who bought a cherry Case CK930 gas tractor it had a gazillion gallon gas tank behind the seat and he said after one season that was it he used it for a chore tractor after that and that was when gas was around .75cents a gallon. I guess it's like my dad used to say the accelerator is attached to your pocket book the more you push down on it the more your pocketbook flies open.

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billde

11-22-2006 20:18:49




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to cadet trooper, 11-22-2006 19:06:35  
if I remember correctly the 706 has about a 34 gallon tank.



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Erik in WI

11-22-2006 18:04:44




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to gdorsey, 11-22-2006 16:21:27  
For least fuel consumtion, the diesel will win hands down. The gassers are cheaper and simpler to rebuild, and will go cheaper at auction. The condition of the tractor will be a big factor in the price. Look for a late model 706 gas with the 291 engine not the 263 or for one with the 310 German diesel.

(German diesels love a steady diet of hard work, they are not a chore tractor!)

Good luck

Erik in WI

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Erik in WI

11-22-2006 18:07:35




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to Erik in WI, 11-22-2006 18:04:44  
Oh yea, I forgot to mention, they don't make fuel barrels big enough for 806 gassers :(

Erik in WI



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Allan In NE

11-22-2006 17:59:21




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to gdorsey, 11-22-2006 16:21:27  
Guess it depends on what you're going to use the tractor for.

I've got two gassers under loaders that really work great. Also, in the hay fields, ya just can't beat 'em.

Never owned an 06 model, but IH is IH as they say.

Allan



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karl f

11-22-2006 16:53:16




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to gdorsey, 11-22-2006 16:21:27  
i LOVE my 656 gas (c-263)
easy starter (even in MN winters--we plug it in). sounds beautiful under load or at idle. has a race car quality idle, and snappy governor. that tractor has a 5 speed trans like an H or M. you can plow in 3rd gear with it, and when under full load with a corn chopper or disc mower-conditiner, it will burn 4 gallons an hour. light loads, it's much better you can move round bales all day on about 5 gallons and still make it home, although cold weather makes it thirstier.
706 with that motor has larger carb jets and runs at higher rpms which do consume more fuel.
-karl f

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steveormary

11-23-2006 10:07:29




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 Re: 706 806 gas vs diesel- cheap horsepower? in reply to karl f, 11-22-2006 16:53:16  
I had a 706 ger.diesel 310 engine. Pulled a 4-16 simi mount plow and a 15ft. tandem disk in 4 and low. I could pull a 14ft.swather 5mph(4 and low)at rated pto speed in heavy alfalfa. Good tractor. Never really kept track of fuel usage.

steveormary



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