7040 rebuild
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=26093
Printed Date: 26 Feb 2025 at 12:18am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7040 rebuild
Posted By: ROBERTSMM
Subject: 7040 rebuild
Date Posted: 21 Feb 2011 at 7:59pm
| 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 |
Replies:
Posted By: Orange Blood
Date Posted: 21 Feb 2011 at 8:01pm
|
Well, the intercooler will help some, but what if anything are you planning to do with the fuel pump, and or the turbo? The turbo was different also if I am not mistaken, that will really determine what will help or hurt the tractor? If you put the intercooler on it, then you may have to look at sizing of the radiator, since now the coolant will contain more heat, the 7060 has a bigger rad.
Just a few things to think about, but it will bolt on. ------------- Still in use: HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060 Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7 |
Posted By: ROBERTSMM
Date Posted: 21 Feb 2011 at 8:10pm
| 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. |
Posted By: Orange Blood
Date Posted: 21 Feb 2011 at 8:17pm
|
Well if you plan to leave the pump and turbo stock, you would gain a little cooler exhaust temps, but I don't know what that will really do for your situation since with stock fuel levels, the stock turbo won't be boosting and building as much heat in the intake as the higher fueled 7060 would. Without turing things up a bit, the intercooler may evenly wash itself, since the added benifit of a cooler air charge would be offset by the more restrictive airflow. Some of the pullers on here would have much better knowledge about that, but if stock all other areas, I would stay stock on the manifold too. These tractors really ran great stock. It's a whole nother ball game if you want to start tinkering with the fuel, turbos, and the likes, but then you need to start thinking about breaking things further back, even though I wouldn't worry about a mild/medium modification. ------------- Still in use: HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060 Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7 |
Posted By: chllngr528
Date Posted: 21 Feb 2011 at 8:27pm
|
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.
I hope I helped you understand a little how the turbo, fuel and intercooler work together. If you have a question let me know.
|
Posted By: ROBERTSMM
Date Posted: 21 Feb 2011 at 8:29pm
|
Are there any difference in the bottom ends (3500 to 3700) or did they just give them more fuel and boost. I think I could get the rest of the set up quite cheep if the bottom end will hold it. |
Posted By: ROBERTSMM
Date Posted: 21 Feb 2011 at 8:34pm
| 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. |
Posted By: chllngr528
Date Posted: 21 Feb 2011 at 8:52pm
|
I don't think you will achieve anything by just adding the intercooler. As stated previously you will be creating a restriction in the intake system so any preformance gained from the cooler air will be offset by the restricted airflow. This is my opinion not fact. I would also think that it wouldn't cool the air effectivly because you are not pushing the air through it fast enough. You may only drop your intake temp by 50 degrees or so.
|
Posted By: chllngr528
Date Posted: 21 Feb 2011 at 8:59pm
|
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.
At the end of the day its your tractor and you should do what you want with it.
|
Posted By: MACK
Date Posted: 21 Feb 2011 at 9:35pm
|
Any time you can cool the air going in the engine it is a +.
As far as restriction, there is O resrtiction with the intercooler manifold over the smaller intake.
Put it on, there is no loss with a intercooler. MACK
|
Posted By: Orange Blood
Date Posted: 22 Feb 2011 at 5:35am
|
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." ------------- Still in use: HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060 Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7 |
Posted By: Lonn
Date Posted: 22 Feb 2011 at 6:09am
|
Why go through the extra work if you aren't looking for more HP? 7040 is a fine tractor just the way it is in my book. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: ROBERTSMM
Date Posted: 22 Feb 2011 at 8:36am
| 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. |
Posted By: injpumpEd
Date Posted: 22 Feb 2011 at 10:18am
|
I personally think every diesel engine should be turbo-charged AND intercooled! If you add the intercooler and dont crank the fuel, it will help efficiency, and probably not overheat the cooling system either. I think the only reason intercoolers were only on larger tractors is due to cost, larger/higher power tractors cost more. the only negative thing about the oem AC intercooler is it makes valve cover bolt access a real pain! Ed. ------------- 210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers! |
Posted By: Orange Blood
Date Posted: 22 Feb 2011 at 10:27am
Ah new information, Now I agree you won't have any problems, even if you decide to up the fuel a small amount. ------------- Still in use: HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060 Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7 |
ROBERTSMM wrote:Posted By: TexasAllis
Date Posted: 22 Feb 2011 at 11:56am
When you get the mods done let the forum know how it worked out and if you can tell any difference in performance, cooling etc.
|
Posted By: DrAllis
Date Posted: 22 Feb 2011 at 1:08pm
| 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. |
Posted By: Good
Date Posted: 22 Feb 2011 at 1:46pm
|
My uncle put an air to air intercooler on his turboed 185 that has the pump turned up all the way. I know it's a different puppy but it's in front of the radiator with an electric fan on it blowing the hot air on radiator. Was always told air to air was better at cooling so it should be removing more heat and blowing it to the radiator.He really uses it too with a 5-16 plow,6 row notill,has knifed anhydrus before.He has never said he had any problems with running hot. I wonder if or how much difference there was in operating temp? I'll have to ask. ------------- B212,716,two 314H's,WC,WD,D19,190XT |
Posted By: chllngr528
Date Posted: 22 Feb 2011 at 5:21pm
|
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.
The reason they started started using intercoolers is because they were adding fuel and air to make more power. We all know that compressed air gets hot and that adding more fuel makes even more heat. So the only way to cool your EGTs is to 1 put a less restrictive exaust system on and 2 reduce the intake air temp. The reason smaller machines are not using intercoolers is because your not trying to shove 20 psi of compressed air into the cylinder.
Here is a example. Stock my truck makes 19 psi of boost. With my "preformance upgrades" it makes 45 psi with twin turbos. At full throttle my EGTs would skyrocket pass 1300.(1600 degrees is when the #6 piston likes to melt) I put a larger intercooler on and dropped my EGT by 250 degrees. Now I also run water/meth injection to help keep them even cooler. Basically what I am getting at is if you add more fuel you need more air when you have more air and fuel you need to find a way to cool her down. By just putting the intercooler on you not really doing anything but cooling the air a littlebit. But, with the intercooler on you can safely add more fuel later on down the road if you want. Your 6 to 1 half a dozen to another. I also didn't mean to sound like you shouldnt put it on. I was just trying to explain how the three have work together to achieve its maximum potential. Just put it on and lets us know what you think
|
Posted By: Chad S
Date Posted: 22 Feb 2011 at 6:41pm
|
I put one on a 4450. Dynoed before and after - No differance in horsepower. ------------- 36 WC,41 WC,53 WD45,57 D14,65 D21,68 XT,72 XT,81 7045 |
Posted By: ROBERTSMM
Date Posted: 22 Feb 2011 at 7:34pm
| 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! |