Are turbo diesels better??

[dkc923]

I have a friend that has a M7040 that does not have a turbo on it according to him. We were talking about my new MX5100 the other day and he said that he doesn't like the new motors because they have turbos. His reason for not liking them is because he says they burn twice as much fuel as the older non turbo motors. I have driven both tractors and I dont know about fuel consumption but I do know that my new mx5100 is much quieter than his tractor and just seems to run much smoother to me. Just wondering what you guys think are turbo motors better or the older style?

 

[helomech]

Not true. A turbo should be more efficient than a non turbo model everything else being equal. Now my 50hp kubota does burn more fuel than my 50 hp massey ever did, but the masey was 2wd and it was impossible to use all the power the engine had.

 

[TripleR]

Many turbos are used to meet emissions requirements as helomech notes they re more efficient than a natural aspiration engine. Yes, you can tune them for more power, but the main use on some is efficiency. Kubota replaced their naturally aspirated engined M5040 with a turbo M5140.

We have two turbo diesels and three natural aspiration, can't really say which is better, but turbos on ours run cleaner.

EDIT: Deleted link, my mistake.

 

[BAP]

Generally speaking most turbo engines with equal size and equal fuel will generate more power out of the same amount of fuel. Thus making them more efficient. A turbo engine will tend to be quicker to respond when you need more speed or power.

 

[GWD]

My dealer told me that the turbo added 2 HP to the engine. It is not a "turbo" in the sense that car turbos are used - to radically increase HP.

In the M7040 the turbo is used to pass the emissions standards. The slight HP increase is insignificant and unnoticeable.

Note: I used to have a Porsche 924 Turbo. Now THAT is what a turbo is all about!

 

[Rob]

Note: I used to have a Porsche 924 Turbo. Now THAT is what a turbo is all about!

have you tried the 924 carrera GTS , now thats a 924...., i have a friend with one sitting in his garage collecting dust, such a waste

rob

 

[dkc923]

His may have a turbo idk I didn't look but he says it doesn't. Next time I'm over there I will look and see but I do know for sure his is a good bit louder than mine. I sure do love my orange tractor

 

[hodge]

Turbo's are amazing. If you keep clean oil going to them and clean air going into them, they will last a long time. Treat it right, and it is maintenance free. Best of all, it is free power, using the exhaust stream. A turbo allows the engine to develop more torque, which is more useful and important than horsepower.

 

[Eric McCarthy]

Navistar 7.3L POWER STROKE..... That is all...

 

[kuboman]

For a given fuel rate a turboed engine will give you a minor increase in power but a noticeable increase in torque plus cleaner exhaust.

 

[TripleR]

His may have a turbo idk I didn't look but he says it doesn't. Next time I'm over there I will look and see but I do know for sure his is a good bit louder than mine. I sure do love my orange tractor

His may be an older model and be normally aspirated, there is a serial number break, but I don't know what it is. I believe the HDC is natural aspiration and HDC-1 has turbo, gwdixon will know.

I have an M8540 and also traded a L5030 natural aspiration for an L5740 with turbo and really don't notice any objectionable noise.

 

[dkc923]

His may be an older model and be normally aspirated, there is a serial number break, but I don't know what it is. I believe the HDC is natural aspiration and HDC-1 has turbo, gwdixon will know.

I have an M8540 and also traded a L5030 natural aspiration for an L5740 with turbo and really don't notice any objectionable noise.

Yeah his tractor does have the hydraulic shuttle shift!

 

[Bulldog]

My dealer told me that the turbo added 2 HP to the engine. It is not a "turbo" in the sense that car turbos are used - to radically increase HP.

In the M7040 the turbo is used to pass the emissions standards. The slight HP increase is insignificant and unnoticeable.

I guess it can varry on different models but look at the old M series:

M6800 - 202 CI - 68 hp - no turbo
M8200 - 202 CI - 82 hp - turbo
M9000 - 202 CI - 92 hp - turbo with intercooler

Same CI engine and 68hp compaired to 92hp isn't a huge increase but it is a noticeable difference when you put a load behind it.

It seems to me that the bigger the equipment is the more you notice the difference a turbo makes.

 

[GWD]

I guess it can varry on different models but look at the old M series:

M6800 - 202 CI - 68 hp - no turbo
M8200 - 202 CI - 82 hp - turbo
M9000 - 202 CI - 92 hp - turbo with intercooler

Same CI engine and 68hp compaired to 92hp isn't a huge increase but it is a noticeable difference when you put a load behind it.

It seems to me that the bigger the equipment is the more you notice the difference a turbo makes.

Actually, the engine's displacement is only part of the story. Kubota has tuned the same engine to a wide variety of HP ratings - even their non-turbo models.

An example is the 4740 (47HP) to the 5740 (57HP). All use the same 2.4L engine. Almost a 20% increase.

Other models to check are here if anyone is interested:

http://www.tractordata.com/farm-tractors/tractor-brands/kubota/kubota-tractors.html

 

[Bulldog]

Actually, the engine's displacement is only part of the story.

I agree fully, I was more or less making a general statement.

The Cat C15 engine is a prime example.

I'm not sure if these numbers are the lowest and highest but that engine can be tuned down to 325hp and up as high as 600 hp. That's a huge range in HP from one engine.