4 or 6 cylinder tractors

Just seams weird no modern 5 pots in the mix.Best of both worlds i would have thought a 5 pot :scratchhead:
I guess because they are a ‘hybrid’ you don’t get the full the advantages of one or the other, so neither the better balance/smoothness of a six nor the shortness/economy or cost/weight/manufacturing benefits of the fours.

In cars they are a “characterful” engine layout.
 

Victor

Member
Location
Devon
We bought a 4 cylinder Valtra 5 years ago, to replace a 6 cylinder NH. It is just as powerful, and the engine hangs on well. Yes, we have a big weight on the front linkage for ploughing etc, but for lighter jobs you have a handy compact tractor.
The last two tractors that we have bought have been 150 HP Kubotas. That 4 cylinder 6.1 litre engine is a beast, and torque is very low down on revs.
Tried a kubota 150 hp and it was good, Engine didn't stall at all compared to my Deutz ( but that's not saying a lot my 6 cyl Deutz stalls for fun)
 

DrDunc

Member
Livestock Farmer
Location
Dunsyre
If it's only doing heavy draught work and haulage, get a six.

If it's doing heavy draught work, haulage, spreading, cutting, baling, feeding.... etc......etc.......etc...... get a four :rolleyes:

It used to be if you wanted over 100hp you bought a six. There are now 4 cylinder engines near 200hp. If the diesel tank isn't big enough for a full days work, it's the wrong brand :p
 

beltbreaker

Member
Location
Ross-shire
Same conversation 17 years ago on FWI when I was looking for a 105ish tractor for ploughing, drilling, fert, haulage and spraying. 110 was about as big as 4cylinder would go.

Consensus was 4cyl won't keep up with 6. Kept 6506 Deere 430nm@1300rpm and bought 4cyl Valtra. Bought it on the figures 530nm @ 1150rpm. Tractor pulls 5 furrows and a press where as the 6 cylinder Deere won't lift the plough

It's not hard to read the specs and interpreter them and if unsure ask on here to further cloud you vision.

However have bought 6cylinder 155 Case since then which interestingly is the same physical size as a 4cylinder Kubota.

Buy what you feel suits your situation and don't worry what others think.
 
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Goweresque

Member
Location
North Wilts
Deutz DX90 was a 5 cylinder engine, I have two :) Silky smooth.

I was told once by an experienced engineer that 4 cylinder configuration is the worst possible from a balancing point of view - 3,5 and 6 cylinder engines have far more natural balance than 4 cylinder ones.
 

pappuller

Member
Livestock Farmer
Location
M6 Hard shoulder
Same conversation 17 years ago on FWI when I was looking for a 105ish tractor for ploughing, drilling, fert, haulage and spraying. 110 was about as big as 4cylinder would go.

Consensus was 4cyl won't keep up with 6. Kept 6506 Deere 430nm@1300rpm and bought 4cyl Valtra. Bought it on the figures 530nm @ 1150rpm. Tractor pulls 5 furrows and a press where as the 6 cylinder Deere won't lift the plough

It's not hard to read the specs and interpreter them and if unsure ask on here to further cloud you vision.

However have bought 6cylinder 155 Case since then which interestingly is the same physical size as a 4cylinder Kubota.

But what you feel suits your situation and don't worry what others think.
We have a kubota m7151 coming on demo and pricing a case pumax 140 (6cyl) both weighing in around 6.5 ton
 

beltbreaker

Member
Location
Ross-shire
New Kubota out, better gearbox, hopefully a better seat, new tyre options. Jury still out on them for me. Did everything I asked of it only more slowly than the Puma except for reversing. It also liked a dram. The Kubota loader was possibly the strongest looking (blindest) I have ever worked. If the improvements on the series 2 are all they are cracked up to be they will be good.
 

Manney

Member
Livestock Farmer
Location
Penzance
I believe (although I could be very wrong) that 5 cylinder engines are not common because the crank shaft is expensive to manufacture due to the 144 degree crank angle and that they are not inherently balanced so require balancer shafts unlike a straight 6.
 

essexpete

Member
Location
Essex
Deutz DX90 was a 5 cylinder engine, I have two :) Silky smooth.

I was told once by an experienced engineer that 4 cylinder configuration is the worst possible from a balancing point of view - 3,5 and 6 cylinder engines have far more natural balance than 4 cylinder ones.
Hence why many have balance weights running on shafts to damp out the vibration.
 

SFI - What % were you taking out of production?

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Red Tractor drops launch of green farming scheme amid anger from farmers

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As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
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