JD and Kubota question

[MF85]

I guess there is a HP loss with elevation, unless the engine is turbo charged. Yet prices go up with more HP, thus making a lower HP turbo charged engine possibly a better deal than a higher HP non-turbo charged engine. I'm trying to net 35 HP at 6,300 feet and the JD 4120 35 HP is 19k while the Kubota 5030 is 22k. Any comments? Why don't ALL manufacturers go turbo if it saves the horses? Is there a reason not to that I should know about?

Kubota compares theirs with other's "direct injection" engines. What is Kubota's if not direct injection and is it any more or less reliable for not being direct injection?

Thanks in advance for any help. As you can see, I'm in that apples to oranges thing and trying to hammer it out.

 

[ByronBob]

A diesel engine doesn't use Oxygen in the compression stroke. Is there a HP loss with diesel??

 

[SkyPup]

The JD and Kubota are both direct injection diesel engines. Turbochargers cost money too, that is the reason a turbocharged diesel is more expensive than a non turbocharged diesel. All diesels are not turbocharged since all diesel engines cost more to begin with and even more with a turbo.

At your altitude a turbodiesel would be a good idea, but you'll only lose about 6% of the sea level power in a non turbocharged engine.

6% of 50HP is only 3 HP, so we are not taking major losses at your altitude.

 

[SkyPup]

</font><font color="blue" class="small">( A diesel engine doesn't use Oxygen in the compression stroke. Is there a HP loss with diesel?? )</font>

??????? What are you talking about?????

A diesel compression ignition engine uses ALLOT more Oxygen than a spark ignition engine.

There is a horsepower loss with ALL internal combustion engines at altitude as the barometric pressure is less than at sealevel. There is also a oxygen loss with the hemogloblin in your bloodstream for the very same reason, less oxygen at altitude.

 

[rockyridgefarm]

JD uses both direct and indirect injection. Kubotas are indirect. Indirect uses a small prechamber where the air and fuel are swirled together before entering the cylinder.

There are great engines with either design. There are probably dog engines with either as well.

Don't expect any manufactureer to admit the any one else has a useable system. Or to compare to any recent machine their competitor offers.

If you are at high altitude, you will get great benifit from a turbo, something that is a real advantage for Deere right now.