7040 rebuild

Hello everyone, Im new to the site and to AC tractors.  Bought a 7040 last spring and really liked it.  im curently in the process of rebuilding it and have a 7060 intake here for it (intercooler).  Just wondering if anyone has done this before and if there will be any diference in performace (fuel economy,horsepower).  I know it should make a difference in both.  Any info is appreaciated

I plan on leaving the rest stock.  The preavious onwer had starting issues and had a new pump and injectors put in it 200hrs ago.  the tractor has 6000hrs on it.  Oh the reason I'm rebuilding the treactor is become it was using 2 gallone of oil a day with lots of blow by.  found out somone got crazy with ether 5 out of 6 had the secound ring cracked.  thus the starting problems.  The rest of the tractor is in great shape.

Well I don't know much about diesels in your model tractor but I do know this. A intercooler only cools the charged air from the turbo. Now while cooler air equals more density, the preformance value will be nill unless your increase the fuel supply to the combustion chamber (i.e turning up the pump). Now you will really reap the benifits of the intercooler if you can increase the airpressure coming from the turbo AND increase the fuel. I will do my best to explain this as quickly as possible. If you turn up the fuel you are increase the cylinder temp and cylinder pressure allowing you to make a little more boost( depending on the wastegate). By increasing the boost your also increasing the intake air temp thus making the cylinder temp even higher. This is where the intercooler comes in, by adding a intercooler you are cooling the intake air there by decreasing the cylinder temp and allowing you to add more fuel and air without cooking a cylinder. By adding fuel you will make more boost pressure because you are raising the cylinder pressures and increasing the  pressure on the turbo's drive wheel. Its alot of work to do all that THE RIGHT WAY so your machine will last years to come. In my opinion if its a work tractor I would just keep it the way it came from the dealer.

Edited by chllngr528 - 21 Feb 2011 at 8:35pm

Im not really looking for more power really just thinking of longjevity.  if I feed it with 350 degree air stock or 275 degree with the intercooler the itercooler seemes to be the way to go.

One other thing. By adding the intercooler you are adding more "space" for the air to fill up so it will take longer to get up to operating pressure. It would be a miniscule amount of time but just somthing else to consider.

I still think you are going to need to consider the operating temp of the engine, if you use the intercooler, that's fine, but if the intercooler pulls heat out of the air, where does it put it? In the coolant!, Now your coolant is hotter, unless you consider how hard you work the tractor, your operating climate, you will have to do something about the radiator size IMHO!  I am purly guessing here, but for example if you push the tractor hard, say with a big disk, I bet the collant temp will be up an extra 10-15 degrees?  Because now, you are taking some heat which used to go up and out the stack, and pulling it out prior to the combustion cycle, and putting it into the collant.  I know some of that heat would have made its way into the coolant through the sleeves, but not all.  If it's what you really what to do, and you don't plan on upping the fuel anytime ever, and you don't work the tractor to it's max, you will still be fine.  Just don't think later "ya know I got that cooler on there from the rebuild, let's up the fuel now too, but not expect it to overheat."

cooling system had a extra core put in the radiator and i think another blade on the fan.  Never had any overheating issuese with it but i appreaciate the input.  Im sure the temp will go up a bit Ill keep an eye on it.  I think im going to try it (intercooler was free) I can always change it back if I have problems.  Thank everyone for the info Ill let you know what happens when i hit the feilds.

ROBERTSMM wrote: cooling system had a extra core put in the radiator and i think another blade on the fan.  Never had any overheating issuese with it but i appreaciate the input.  Im sure the temp will go up a bit Ill keep an eye on it.  I think im going to try it (intercooler was free) I can always change it back if I have problems.  Thank everyone for the info Ill let you know what happens when i hit the feilds.

Be sure and report back as to how on an 80 degree F day and pulling it hard you can't keep the coolant temps out of the red !!!!!! 7060 radiator is 20% to 25% more capacity than a 7040 radiator.

I highly doubt it will make the coolant temp go up at all. You probably wont even notice it on there and it certainly wont hurt anything.

Edited by chllngr528 - 22 Feb 2011 at 5:24pm

I appreaciate all the info guys.  I just got the o,haul kit today and should have it together in a couple weeks.  Ill let you know how it runs in the spring when i get to the fields.  Im hoping less fuel and better performace.  again thanks for the info!