Two Things about Diesel engines...

[workinallthetime]

there was a thread on here about adding a turbo somewhere, i read it a couple times and then never saw it again.

i would think that an intake modification some how would be a good place to start, as for pump chages i think that would have to do with how the pump is made.

good luck let us know when your smokin agg tires

 

[DieselPower]

1. NO
2. NO

On a factory stock tractor I don't really think you need it. Now if your talking about some of the 2,000-3,000+ HP pulling tractors I work on then it would be Yes, Yes. Somehow I doubt anyone here is spinning over 8K RPM in their tractor , if you are your on the wrong tractor site.

 

[sandman2234]

No on both questions.
Most people don't want to transfer a "weakest link" from the motor to a clutch or an axle or some other mechanical part that will give when stressed beyond it's capacity. It is a little different with a race vehicle than it is with something you make your living with or a "semi-toy" that the exta hp is just going to lessen your seat time, which you already enjoy and adding to the wrench time that your wife hates so much.
David from jax

 

[hill]

Serious answers.

1) Non turbo diesel engines really can't get hot enough to melt anything. One of the nice things about diesel fuel.

2) A few people have done that in the past. Maybe even a few here have heard of them. John Deere, Kubota, Allis Chalmers, Ford, New Holland among others. Manufacturers do it all the time. Often you can too with just the twist of the wrist and some calibration exptertise. Don't expect to go big like your cummins or my Duramax. But 2-5 hp is a very reasonable gain to expect. Some of the larger engines in the 60's and 70's used to go from 60-80hp with just fueling changes.


I have more hp on my stock Kubota L3410 than the tires can put to the ground for most things. BUT, 3-5 more hp would be nice when maxing out the loader plowing into a pile of spoils and the engine dies....

jb

Thanks!

I'm not interested in racing the silly thing . I do have a specific reason for asking though, and that is that I've just bought a new B7800 that shows a spec. of 22 hp at the PTO, and I have been given a 5' hogcutter by a neighbor that has a 25 hp minimum need according to the little owner's sheet that he gave me with it. I'm pretty sure that except in really tough cutting the tractor won't have much trouble because of this specification issue. I'm sure that the mower spec. is an estimate (hopefully not a low estimate) and the tractor has three ranges, but I thought if anyone has had success with a little goosing it might come out if I raise the subject here.

As to non turbo'd diesels and EGT - I have a Toyota BJ40 with approx. 85 normally aspirated HP. It's got a heck of a reputation for longevity but most teardowns will show cracks in the precombustion cups and often in the head. So I stuck a gauge in the cab to watch what's going on and found that even a long easy grade on the highway taken in fourth gear will quickly bring the combustion gas temperature to and over 900 degrees measured in the exhaust manifold just after all four pipes come together. That's hot enough to start cracking stuff. I let off and downshifted before it climbed any further and I had learned something. Even little underworked diesels can get mighty hot.

I like my trucks to stay under 1200 degrees in normal use but try to keep them below 900 degrees if possible. If it means I gear down and go a little slower so be it.That little 3.4 litre Toyota probably needs a thicker margin of safety than a 5.9 Cummins. Follow along to this little 91.5 ci Kubota and even considering it's nice low gearing, it works hard making long pulls across a field with a heavy anchor behind and probably gets pretty hot doing that. But who would know? I don't want to wait for a holed piston to find out.

Bottom line is that I think every diesel engine should have an EGT gauge installed as part of it's original installation. They can get too hot at the exhaust before a water temperature gauge will even move and it comes real quick when under load. JMO.

 

[zzvyb6]

Yes
Yes

I used heat tape tell-tales to check temps on a JD4430 cranked to "improve" a silo blower reach. Was not applied for traction applications, just stationary jobs (silo fill, ac for grain drying, etc). These machines came equipped and ready to turn up. All motor, transmissions and frame were designed so the base tractor was the highest power. Lower versions were detuned.

I recently checked my CUT for temp not because of power, but because I wanted to install an orchard exhaust pointed at the ground to reduce noise. I decided not to because of the high probability that the combustable material lying in the pathway of the said exhaust duct outlet would manifest itself as one of the 3 necessary and required elements of A FOREST FIRE.

 

[art]

Yes
Yes

I used heat tape tell-tales to check temps on a JD4430 cranked to "improve" a silo blower reach. Was not applied for traction applications, just stationary jobs (silo fill, ac for grain drying, etc).


Good thing it was for the pto load and not traction unless the tractor was lucky enough to have been updated to the 40 series rearend!

Often time just some good tuning will give you some extra power needed.

The 25 horsepower rating might just be there for the tractor's weight more then the power! We often see the manufacturer rating machines for the weight and horsepower to optimize the machines capacity although the average operator will never need it for there needs.
I'd try it first!!!

 

[bx23barry]

Back in the mid 70s I used a IH 966 (@90hp) to pull a heavy disc. I was a little too much for it but with loaded duals and lots of weight it worked with only some tire spinning. The engine was worked pretty hard making lots of black smoke. I took it as easy as I could but really wanted a gauge on that thing. That was really the only time I remember being too worried about "overheating" a tractor.

 

[excelagator]

I'm confused here..........

Worried about burning the engine up due to exhaust temp, but wanting more HP.

Dan

 

[john_bud]

I'm confused here..........

Worried about burning the engine up due to exhaust temp, but wanting more HP.

Dan

Actually, I thought he had a balanced thougth process. He identified the potential risks and asked experts (well, he asked us anyway!) if it was a concern.



To the original poster, Heck - the cost of an EGT is pretty low, why not stick one in and monitor ?

jb

 

[Lay8neyetdaddy]

I will be buying my first tractor, and I am also concerned about overheating. Wish they had safety shutoff, like generators do when they're
low on oil.

Being a first time tractor owner, can have an expensive learning curve.