I had a buddy of mine tell me I could get a touch more power out of my b1750. I would like to try it but not 100% sure how to go about it.
turn up fuel
- Thread starter tkosanic1
- Start date
Unless you plan on installing a pyrometer to monitor exhaust gas temp, another gauge to monitor coolant temp, and possibly a murphy emergency temp cutoff, I'd STRONGLY recommend leaving it alone. If it gets hot and smokes a very expensive to rebuild engine, will it be worth the extra 5 horsepower?
These little tractors don't have excessive cooling capacity like a Dodge pickup. If you can't dump the excess heat, how much good will the tractor be if you're always needing to monitor and slow down because it's building too much heat?
If you REALLY feel the need to mod it, fab up a small turbo system for it.
Better yet, leave it alone, be happy, and get projects done rather than working on the tractor. If you need more power, sell yours and buy a bigger one. You will save yourself many headaches, and the $$$ you will eventually spend either way will get you a more suitable machine.
Steve
These little tractors don't have excessive cooling capacity like a Dodge pickup. If you can't dump the excess heat, how much good will the tractor be if you're always needing to monitor and slow down because it's building too much heat?
If you REALLY feel the need to mod it, fab up a small turbo system for it.
Better yet, leave it alone, be happy, and get projects done rather than working on the tractor. If you need more power, sell yours and buy a bigger one. You will save yourself many headaches, and the $$$ you will eventually spend either way will get you a more suitable machine.
Steve
Last edited:
I have not quiet figured out the reason for wanting to modify the engine to boost power and performance. These are farm tractors not hot rods at the drag strip. Yeah a turbo can be done as we have seen it on here. But how much of a mechanical gain do you get by adding a turbo to a compact diesel tractor?
I agree with Apogee if you really want more power buy a bigger tractor.
I agree with Apogee if you really want more power buy a bigger tractor.
Actually, over fueling without a turbo is just wasting fuel and actually cools the motor. Running lean will overheat it. Now over fueling WITH a turbo, that's another matter and where you start getting into pyro's monitoring EGTs, though things like larger free flowing exhaust and propane injection can help cool things down. Advanced timing can net a bit of power on NA diesels, but at some cost of longevity, and the pay-up comes sooner with more advance. The only exception is that tired old diesels that are timed with chains that stretch can be brought back to specs by increasing timing from factory stock, though stretched chains are soon to fail and should be replaced anyway.
That said, as already said, these are tractors. They are made to do a job well and consistently for a long time. Increase in power isn't likely to net you much benefit as you'll be running up against other limitations pretty quick, and it's unlikely you'll be able to notice any benefit from the small gains you might get with minor changes. I'm no stranger to turned up diesel trucks. My DMax is quite mild but runs roughly 500 HP most of the time, and tops out at near 600 HP when I turn it all the way up (Juice/Edge/etc). But it never crossed my mind with a tractor. Now going from a D750 to D950 did cross my mind, but I still worried about potential for stripped/broken gears and shafts.
That said, as already said, these are tractors. They are made to do a job well and consistently for a long time. Increase in power isn't likely to net you much benefit as you'll be running up against other limitations pretty quick, and it's unlikely you'll be able to notice any benefit from the small gains you might get with minor changes. I'm no stranger to turned up diesel trucks. My DMax is quite mild but runs roughly 500 HP most of the time, and tops out at near 600 HP when I turn it all the way up (Juice/Edge/etc). But it never crossed my mind with a tractor. Now going from a D750 to D950 did cross my mind, but I still worried about potential for stripped/broken gears and shafts.
I have to disagree with the previous post. Over fueling a gas engine will cause the exhaust to run cooler. Over fueling a diesel cause excessive exhaust temps. The leaner a diesel runs the cooler the exhaust. If you have black smoke you have high temps.
Sorry, yet again I learn the lesson of not posting late at night when I can't sleep and take stupid (pain) pills...
"Lean" on a diesel basically just makes less power and slows it down. Up to the point it runs out of oxygen, it burns almost completely. Over fueling is putting more fuel in than can be burned with the available intake charge, so you have hot gas and unburned fuel coming out of the exhaust valve. That continued incomplete burn is what causes the soot and increased EGT.
Somehow my addled brain cross wired "gas is opposite of diesel" with "NA is opposite of TD". But that's one good thing about these open boards with larger member bases. If one member screws up, it's only a matter of time before they are corrected. Thanks for being polite in doing so.
"Lean" on a diesel basically just makes less power and slows it down. Up to the point it runs out of oxygen, it burns almost completely. Over fueling is putting more fuel in than can be burned with the available intake charge, so you have hot gas and unburned fuel coming out of the exhaust valve. That continued incomplete burn is what causes the soot and increased EGT.
Somehow my addled brain cross wired "gas is opposite of diesel" with "NA is opposite of TD". But that's one good thing about these open boards with larger member bases. If one member screws up, it's only a matter of time before they are corrected. Thanks for being polite in doing so.
Last edited:
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
BadDog,
Going from a old tired D750 to a new D950 causes me no ill effects, just more power to use.
Going from a old tired D750 to a new D950 causes me no ill effects, just more power to use.
Yes, I was following along on that. And my D750 has some blow-by, so I was casually looking for a D950. Then I bought the B2150 with 4 cylinder 24 HP motor (no idea the designation), partly/mostly for the backhoe, and the point became moot.BadDog,
Going from a old tired D750 to a new D950 causes me no ill effects, just more power to use.
I'm still waiting on the HOW too...LOL for more fuel...
I want to turn the fuel up on my ZB600 going in the Muscateer...Posted in this section of forum but no one seems to respond to my queery for help.
Oh well, maybe I'll have to hunt for another place for info which sux cause it's a good little engine and I really want to run it.
Again, still waiting to learn how to turn up fuel!
I want to turn the fuel up on my ZB600 going in the Muscateer...Posted in this section of forum but no one seems to respond to my queery for help.
Oh well, maybe I'll have to hunt for another place for info which sux cause it's a good little engine and I really want to run it.
Again, still waiting to learn how to turn up fuel!
I have no idea on the Kubota pumps, it depends on the pump. Often it's just an adjustment screw somewhat like setting idle mixture on a carburetor. Where to find it, how to adjust, and how sensitive it is will vary. Sometimes it's more complicated, particularly if you want/need to change the profile.
No 2 Kubota engines are the same so it makes it a little tough to tell you how. You can do what I do and study the parts manual for your particular engine and find the mechanism for rack setting. Then your on your own with what you do with it. You have been given some very good educated and experienced advice here. What you do with it is your choice. Have at it.I'm still waiting on the HOW too...LOL for more fuel...
I want to turn the fuel up on my ZB600 going in the Muscateer...Posted in this section of forum but no one seems to respond to my queery for help.
Oh well, maybe I'll have to hunt for another place for info which sux cause it's a good little engine and I really want to run it.
Again, still waiting to learn how to turn up fuel!
I fully understand the cause and effect and potential for problems when turning up a Diesel.
My shop contains some the timing gear to set the timing on this machine quite accurately if need be.
Turning pump up and letting out a bit of smoke may just overheat the pistons yes, but I'll throw a Pyro on anyway for good measure, as I've got a few of them floating around.
I like your suggestion of study the parts manual.
I'll have to order one then I suppose.
Does anyone know where to get parts for these ZB600 engines?
What is it your trying to accomplish by juicing up the fuel? Do you plan to plow the farm during the week then head to the race track on the weekends?
We are trying to tell you its not really a good idea to turn up your diesel engine by dumping more fuel into it. It's not worth it for horsepower you'll gain.
Horse power doesn't mean a damn thing unless you can transfer that power to the ground and get better pulling power. I highly doubt you'll get any increase of PTO power either. All you'll end up doing is burning alot more diesel fuel faster.
We are trying to tell you its not really a good idea to turn up your diesel engine by dumping more fuel into it. It's not worth it for horsepower you'll gain.
Horse power doesn't mean a damn thing unless you can transfer that power to the ground and get better pulling power. I highly doubt you'll get any increase of PTO power either. All you'll end up doing is burning alot more diesel fuel faster.
Perhaps I'm not fully explaining myself, clearly, take a look here!
http://www.orangetractortalks.com/forums/showthread.php?t=11826
Then look at the build thread, linked in the thread and thats when you one will inderstand this setup is not in a tractor.
I'm wanting more power cause I can..LOL I'm of the nature of the THREE T's of diesel Tune it up Turn it up and Turbo it!
Just saying...
Al
so thought time for update,
managed to secure a deal on a RHB31 turbo to crank some boost into this little engine. I also have a guy who will rebuild the injectors and help me deal with rebuilding the IP as well.
this turns out rather well for me as the old gas Tecumseh HH120 12HP engine is likely sold.
that leave two new clutches and install engine and be done.
oh of course there is wiring involved...I will be rewiring my ride from the current setup to the new dynamo charging system.
thats bout it for now...thanks for reading
Al
managed to secure a deal on a RHB31 turbo to crank some boost into this little engine. I also have a guy who will rebuild the injectors and help me deal with rebuilding the IP as well.
this turns out rather well for me as the old gas Tecumseh HH120 12HP engine is likely sold.
that leave two new clutches and install engine and be done.
oh of course there is wiring involved...I will be rewiring my ride from the current setup to the new dynamo charging system.
thats bout it for now...thanks for reading
Al
Eric, I get what you are saying- these tractors have more power than traction, so extra power doesn't net an advantage. But, it will give more PTO horsepower, which can be beneficial IF it isn't dangerous to the life of the engine. Like the recent post about powering a 72" finish mower- a couple extra horses can make a difference when you want to run something bigger.
Riotwarrior, I read your posts here and on your other thread- no need in getting impatient or insulting. Probably, no one answered you because they don't know. This is a good group, which means two things- if they know, they will jump in, and if they don't, they don't contribute what isn't helpful.
Riotwarrior, I read your posts here and on your other thread- no need in getting impatient or insulting. Probably, no one answered you because they don't know. This is a good group, which means two things- if they know, they will jump in, and if they don't, they don't contribute what isn't helpful.
On the very front of your zb600, right in front of the throttle lever there is a screw covered by a metal cap. remove that cap ( whatever method you chose, it is not made to be easy!) now if you loosen the jam nut and turn the screw counterclockwise you will increase maximum fuel. I don't know if you'll get much horsepower but you WILL get more smoke! LOL