Buying Advice Turbo or not

[hilltop Haven Farm]

Would like to hear some pros/cons of a 3cyl turbo and a 4 cyl natural diesel.

 

[jeff9366]

Turbo adds complexity to engine.

Turbo ameliorates engine power loss during high altitude operation.



( I prefer large displacement engines to lower displacement engines at moderate altitudes. Torque generally comes on at lower RPMs.)

 

[dieselcrawler]

I'm a big fan of diesels, more so of turbo'd ones. I'll take the added complexity of of the system for the added power and fuel efficiency, even at my lower altitudes. I've kicked around the idea of adding a turbo to my little 27hp JD 3005, have added a turbo to an old '84 Chevy K30 military truck I had, and loved the results on the 6.2l v-8. No intercooler, about 10 lbs of boost under load... my Ford 7.3 powerstrokes are all high miles, but still keep on chugging along, all over 300k. With some basic maintenance, not much different than what one should be doing for their diesel motor anyway, and better power and fuel economy.

 

[radios1]

a turbocharger has a lag, and operates at an extremely fast RPM, and can't compete with a supercharger, much lower RPM, instant response, and much higher boost possible.. so, if the choice came down to a turbocharger or displacement, and a supercharger is ruled out, displacement is better!..

 

[Industrial Toys]

A turbo is a wonderful device. But also expensive initially and potentially down the road. I personally prefer a larger engine without turbo working less, rather then flogging the smaller one for more power. There is more profit in selling a smaller engine tractor with a turbo and it's also a big selling point.

 

[hilltop Haven Farm]

My reason for this question is the 2 tractors I'm looking at, kioti nx4510 has a turbo 3 cylinder, and a TYM 454 non turbo 4 cylinder. There specs are pretty close aside from completely different engines. I live in central pa where elevation is just moderate.

 

[Industrial Toys]

How does displacement compare?

 

[Tractorable]

The TYM has a 2.2L (133 cu in) Yanmar naturally aspirated 4 cylinder diesel. The Kioti has a 1.8L (111 cu in) Daedong turbocharged 3 cylinder diesel.

 

[hilltop Haven Farm]

They TYM has a 2.2L (133 cu in) Yanmar naturally aspirated 4 cylinder diesel. The Kioti has a 1.8L (111 cu in) Daedong turbocharged 3 cylinder

Correct. I will be using a 6' brush hog to mow about 20 acres, some loader work, eventually a grapple bucket, maintaining logging roads and driveways. Property is pretty hilly.

 

[Slowpoke Slim]

I'm at low elevation, and more concerned with long term durability, so I passed on the turbo.

 

[Tractorable]

They TYM has a 2.2L (133 cu in) Yanmar naturally aspirated 4 cylinder diesel. The Kioti has a 1.8L (111 cu in) Daedong turbocharged 3 cylinder

Correct. I will be using a 6' brush hog to mow about 20 acres, some loader work, eventually a grapple bucket, maintaining logging roads and driveways. Property is pretty hilly.

Have you considered the Yanmar YT347? Same 4TNV88C Yanmar engine as the TYM except it puts more power out to the PTO because it has a more efficient iHMT transmission. Lots of dealers in your area.

 

[mbu]

a turbocharger has a lag, and operates at an extremely fast RPM, and can't compete with a supercharger, much lower RPM, instant response, and much higher boost possible.. so, if the choice came down to a turbocharger or displacement, and a supercharger is ruled out, displacement is better!..

Not anymore, turbochargers technology has come a long way...

 

[farm boy00]

a turbocharger has a lag, and operates at an extremely fast RPM, and can't compete with a supercharger, much lower RPM, instant response, and much higher boost possible.. so, if the choice came down to a turbocharger or displacement, and a supercharger is ruled out, displacement is better!..

How do turbos operate at high rpms?? Beater diesels in trucks and semis usually red line at or lower then 3k rpm and have turbos that create power.

 

[Tractorable]

How do turbos operate at high rpms?? Beater diesels in trucks and semis usually red line at or lower then 3k rpm and have turbos that create power.

The motor may only be turning at 3K rpm but the turbo may be spinning at 15K rpm.

 

[Kyle_in_Tex]

The difference might be more torque in the turbo engine, depending on the amount of boost.

I would have to see the torque curve graphs from each engine to help make a decision.

Torque is good for tractors.

 

[ptsg]

Here is the torque curves for both engines.

Kioti (Daedong):

Hard to see but peaks about 150 Nm at around 1800-ish RPM

Tym (Yanmar):

 

[deserteagle71]

Having owned multiple diesel-powered pickups through the years (all with turbos), I'd say turbo reliability is a non-issue. That's one component I never had problems with!

 

[Ortimber]

Having owned multiple diesel-powered pickups through the years (all with turbos), I'd say turbo reliability is a non-issue. That's one component I never had problems with!

I completely agree with this statement.
We have had many different machines with turbos, never an issue.

 

[ericm979]

I change the oil more frequently in my gas turbo cars and use synthetic oil. But those engines are highly tuned- the current one makes 295hp from 2 liters. I'm not sure I'd bother on a turbo tractor.

The torque curve on the Kioti looks good. For tractor use you want a torque curve that falls off towards PTO rpm. Tractor people call it "torque rise". The reasoning is that as you're pulling or plowing or whatever, when the engine rpms are dragged down due to load the torque increases, opposing the force. It's probably less of an issue on an HST where you can lower the gear ratio just by raising your foot. But even there it would be helpful in applications such as PTO driven chippers.

 

[mcfarmall]

I've heard that motorized washing machines have lots of problems. I'm going to go with the rock down at the creek as it's more reliable...especially at low altitudes.

You'll see more blown turbos at a superstock tractor pull than you will in a lifetime of owning a turbocharged truck, car, or farm tractor.