I Still Hate My Tractor

[rsallen]

Best check the engine specs closely before investing in a turbo unit.
As a general rule the cam/s timing via the lobes over lap and lift are much different between turbo and non-turbo versions are among other things that differ of the seemingly otherwise same engine.

Have you really thought this through?
How much more power are you gaining vs the cost? And are you SURE it's going to meet what your expectations and needs are?

Myself, I'd take others advise here and trade toward a machine that would deliver what I required to begin with.

 

[aczlan]

Would you buy it with less than 100 hrs on it if you had no idea it ever had a turbo?
Yeah you would.
Fred

True, BUT if you leave the valve cover on, I would see the plug in the valve cover and ask questions about it...
And, if selling, I would disclose its history. To do otherwise could open the seller up to a lawsuit for misrepresentation if something were to happen down the road that was caused by the turbo.

Aaron Z

 

[nwltruck]

Given the smoke, power, and cold start problems I would believe there is something wrong with it. Bad fuel, plugged filter, bad hydro filter, timing, could be anything. Need to eliminate the small things first. You may be surprised at the power loss you get with some of the little things.

 

[The Fred]

So look let's keep my integrity out of the deal and stay on topic right, can we just try this once? I see used cars come in every day just total JUNK that a new car dealer pushed onto a consumer and these dealers have NO problem doing it, neither would most tractor dealers. You would be surprised to see a car with 100,000 miles come in and someone has scrawled on the engine in crayon "Timing Belt 95k" and a date next to it just to find it was never replaced. I see it all the time. IF I traded anything in I wouldn't care about the history do you think any dealer does? Of course not they make their own story up. Don't be too na?e Aaron it happens everyday.

Maybe if I posted that I will dress homeless person in front of Lowes and get enough coin to go inside and buy the PVC pieces I need to plumb up the high pressure side You think PVC will take 8 psi? Just kidding but that is some funny stuff right there mister! Drum roll for me.

THE TURBO IS GOING ON. I don't use the machine that much, ten years might get 750 hrs. if I keep it that long.

Darn you guys are ruthless on this forum.

Fred...filters are all new I just did the 50 hrs. service.

 

[the old grind]

Resale? Let's suppose that somewhere out there a first time buyer has a tuner car background. He already knows 'more is better' (Orange air cleaner, gawping tail-pipe extension, etc) I'd think he'd be all over a tractor with something extra, esp if it offered more power than other L3940s. (I doubt he'd have it dyno-tested.) So leaving the turbo on it might be a selling point some day, ... that's assuming the long shot that our OP isn't happy with the results.

Nowadays, the best reason to do something seems to be that someone else did it and has nothing but good to say about his effort. (LASIK eye surgery, accessory sunroof, DVD player, 'style' vs an old-school haircut, or that Enzyte guy on TV....) Can't say for sure about the rest of them, but I believe Fred will give us an honest appraisal once he's got 'er up & running. :thumbsup:

 

[4shorts]

Well I snapped a few photo's for you. It's a little hard to get a good photo because I have the stack conversion kit on mine. It's going to be interesting to see how you do this turbo install. Your going to need some wicked fab skills to make support brackets and such for the turbo. With it's weight your not going to want that thing bouncing around. The manifold that holds the turbo on this 5740 is pretty beefed up. You can see the turbo drain in the last photo.

 

[Midniteoyl]

Stock Kubota wastegate is set at 7 psi. I would doubt it will be an issue. I would bet the head gasket is the same one as the Bobcat S160.

Fred

I'd start at 3psi and not go over 6psi if you need that much power.

 

[The Fred]

EXCELLENT pix just what I needed. I want to assume on your 5740 the oil filter sticks out a bit because of the oil cooler? Mine has no cooler therefore the side cover might need to be modified which I would like to avoid unless I had another side cover. My turbo is much smaller than that. Your last picture shows a plug just behind the tractor frame near your turbo drain, this is what I was assuming is the plug for the drain, I was wrong.

Thank-you so much for taking the time.

Yup I'll start low psi. Checking the timing before I dive in too deep.

Fred

 

[4shorts]

EXCELLENT pix just what I needed. I want to assume on your 5740 the oil filter sticks out a bit because of the oil cooler? Mine has no cooler therefore the side cover might need to be modified which I would like to avoid unless I had another side cover. My turbo is much smaller than that. Your last picture shows a plug just behind the tractor frame near your turbo drain, this is what I was assuming is the plug for the drain, I was wrong.

Thank-you so much for taking the time.

Yup I'll start low psi. Checking the timing before I dive in too deep.

Fred

Nope. The oil filter if I remember correctly is pretty much the same as it was on my 4240. The biggest difference on the 5740 is the exhaust manifold. The two lines you see on the lower engine block are related to the turbo. Maybe one is an oil feed line and the other a drain?
There must be a coolant line there as well but the shop was busy today so I just snapped the photos quick for you. If you need anymore just let me know.
Your welcome and good luck.

 

[Fordman1981]

EXCELLENT pix just what I needed. I want to assume on your 5740 the oil filter sticks out a bit because of the oil cooler? Mine has no cooler therefore the side cover might need to be modified which I would like to avoid unless I had another side cover. My turbo is much smaller than that. Your last picture shows a plug just behind the tractor frame near your turbo drain, this is what I was assuming is the plug for the drain, I was wrong. Thank-you so much for taking the time. Yup I'll start low psi. Checking the timing before I dive in too deep. Fred

Good luck Fred looking forward to following your progress.

 

[kuboman]

The small line is the oil feed to the turbo. The larger line is the drain. There are no coolant lines to the turbo. If there is not a drilled and tapped port for the oil drain the you will need to drill and tap the block for the oil return. There should be a 1/8" pipe plug for the oil pressure line.

 

[MessickFarmEqu]

IMO.. a few notes. L3940 is our biggest seller in this series. Its not a machine we ever get power complaints with. Either your expectations are not realistic, or you have a mechanical problem there. One that adding a turbo is not going to change at all. I do think its cool and all, I'm just a bit confused.

 

[buickanddeere]

I keep wondering if this low power theme is just a running joke by a troll ?

 

[Coyote machine]

I've read all of this thread and the prior one you linked to. So far this is about the dumbest idea I've seen on TBN in a while. You, the OP insist people here tell you what you want to know and complain when they don't. Then you insist you'll do what you want no matter what, and tell me how to do it. Like a petulant child you may get more then you bargained for in the end. Question is, will you learn anything from it. I think not. Why? Because you pay NO attention to those who tell you what you NEED to hear. That is, what you plan to do is pointless and will not change the performance of your tractor, and very well could damage it possibly irreparably. You ignore or slam such advice, (not advise) and insist that the head gasket is probably the same, the this and that won't matter and I'll fudge the rest....
I cannot believe, so many who said in the prior thread that they were going to bow out are still here, trying their level best to tell you why you should either fix the current tractor's 'problems' or trade it up to what you should have bought before the tier 4 model dominate what's available.
I wouldn't complain that members here tell you what they feel will work, INSTEAD of what you want to hear. They're trying to help you, but you just can't see it. Being obstinate may render your tractor broken and devalued, but you continue to insist that you know what's best. the proof will be in the final results. And the head gasket is often different on turbo engines, like the Saab turbo someone mentioned, for obvious engineering reasons, including the overall engine compression being LOWER on those engines than the normally aspirated ones. But hey, you know it all, so we'll just sit back and watch 'er blow.:confused3:

 

[number two]

Hey,let's not count Fred out just yet.He's posted some great,hard to find info in the Oil.Fuel,&Lubricants forum.He's certainly no dummy.
Good Luck Fred!

 

[Loadstar]

It's not stock! The resale! Get a new tractor! The warranty! The gaskets! The pistons! The children! Waaaahhhh

It is his tractor. Go easy on the drums. Maybe things can be learned that dont involve your money/tractor. Heaven forbid a machine is removed from stock form. Never noticed any protest at the tractor pulls.

 

[94BULLITT]

I still have to seen a picture of the "gutless" L3940 with the landplane. I know he can post a picture. So come on Fred lets see a picture of it.

Well all you needed to do was check weight of tractor and the engine hp. You will see yours with the cab has a high weight to hp. In my opinion the L5740 would be minimum for a cabbed tractor.
Unless your engine has the necessary piston cooling jets your engine will not standup to the hp you will need to make the tractor what you expect it to do. Just buy the bigger tractor.

I disagree. I think of the L5740 as a hotrod of a tractor. I think it is a really light tractor for all of that power. I know it would be nice for snow blowing or some other heavy PTO work but it would not be as necessary for ground engaging work. KenB2920 Has a L3540 cab tractor and he pulls a 6' rotary cutter with it.

 

[Xfaxman]

--------------------
The same fuel I use in my other equipment has never bothered ever hoping it's isn't the issue. I have to fill my 330 gal. tank later this month I'll be sure to use ULSD on road.
------------------------------------
Thanks, Fred

Why not off road?

 

[MHarryE]

Hope your turbo installation works out. I remember the good old days when turbos on tractors were new and farmers started adding kits to their tractors followed by the companies doing the same thing. Like wasn't an International 1206 an 806 with a turbo? Your 3940 sounds like my 5740 as far as starting. It stays in the machine shed until the morning temps are consistently below freezing, then I have to make room in our heated garage. At the same temps our John Deeres, New Hollands and M135GX start without problem but they are all larger engine direct injected diesels. The indirect injected L5740, RTV900XT, and Cat 301.8 all suck at cold starting especially below zero. I take it your research hasn't turned up any other item they might change for the Bobcat version like higher capacity oil pump to make sure the turbo bearings are fed. Piston cooling - if you are going to be in a continuous hard pull like an ag tractor pulling a primary tillage implement but like a skid steer - they spend half their life backing up. Good luck. I am anxious to see how it all turns out.

 

[TomSeller]

Farmall? Get an Allis Chalmers ! The original orange tractor ! :thumbsup:

And then there were the "flambeau orange" Case tractors. The original "copy cat" orange tractor?