NH "T"urbo "C"harged 24DA

whitetiger · Mar 23, 2007

Mega_Me said:
The turbo I found was off of a Kubota (of all things!) engine that powered a generator in a custom coach. Apparently, the engine let go due to a flaw in the camshaft and the guy I bought it from was parting out everything. The turbo is made by Mitsubishi Heavy Industries (MHI) and is a TD03 model. The center section is oil cooled and the intake and "charge" openings are close to the existing diameter(s) of the hose in the tractor now. Also, the overall compact size should work out good.

Based on several compressor maps, engine schematics and emails from "people in the know" at 3-4 psi of boost, I should be close to a safe reliable 28hp.....more if I wanted to jack up the fuel and wastegate settings. The engine the turbo came off of was 2L in displacement. The Perkins/Shibaura engine in the NH is 1.131L. Both engines have close to the same compression ratio and appear to operate in the same RPM range.

Pics of the turbo compared with a 1/2" wrench.

There is in no way, shape or form any connection between Perkins and Shibaura.

NoMo · Mar 24, 2007

The Deere 3520 has a Yanmar 3TNV84T 1.5L turbo-charged engine. You might look into the either the green or grey-market world for your project.

JSUnlimited · Mar 24, 2007

whitetiger said:
There is in no way, shape or form any connection between Perkins and Shibaura.

Then why is it that when I needed engine parts, they were ordered from Perkins?

You might want to read this aritcle just FYI.

Perkins Engines Opens New Engine Plant in Georgia

Irregardless, I'm still waiting on feedback on some details on the turbos I've mentioned before.

jwstewar,
You have a lot of good points and it is something I've thought of. Being a hydro, I am more comfortable with slightly increasing power with out having any shock to the system as would be with a gear drive. I agree that the relief would trip before anything would happen. But before the relief trips, I am out of power. As far as the pto is concerned, all of my driven implements have a properly adjusted slip clutch. I too run a tiller but only a 48" as that was what the dealer recomended. I'm concerned that you are burning the clutch? Does is possibly need adjusting?

Guys, keep in mind that I am only looking to provide 3-4 pounds of boost in the upper RPM range. I'm not looking to make a 50hp tractor out of this little TC. According to turbocharging formulas based on engine displacement, blah, blah, I would safely end up with about 28hp. From what I've read, for many years turbocharging was just an afterthought on many vehicles, machinery, etc. After some indepth reading, I often wonder why more things are not turbo'd? Possibly production costs, etc? So not only will the benfit slight additional increase in HP, it would also allow the engine to run more efficiently. And as I mentioned before, it would be something unique and if it does not work satisfactory, I'll change it back to the stock config and move on. Unless I'm wrong, the TC26DA uses the same everything as the TC24DA and so a couple more hp should not be a problem. I'm not really concerned with the dollar to hp increase ratio, this is a hobby for me and I enjoy tinkering with stuff like this.

So, at this point I am tracking down more specs on a couple of suitable turbos and then it's a matter of fabrication, etc.

And, all of the discussion here is a perfect example of why this site is valuable. Please keep the comments, questions, and concerns headed this way!

jwstewar · Mar 24, 2007

I too run a tiller but only a 48" as that was what the dealer recomended. I'm concerned that you are burning the clutch? Does is possibly need adjusting?

If I hand't got such a good deal on the 60", I would've had a 48" for it. But when you buy used. The only time I've have noticed the smell was when I pushed the ground speed a little too fast and the ground was a little too wet (was trying to get a handle on the weeds and before they got too much of a foot hold), slow down and everything is OK. Don't really think the clutch needs adjusting as I don't have any problems with dirt work or when running the bush hog or MMM. I have less than 700 hours and with hydro, since you don't really use the clutch, I don't think it would be an issue. I have adjusted the slip clutch on the tiller and I have had it slip on me when I hit a hard rock or something, so I don't think it is it either. I'll let you know more as I use it preparing the garden.

dfkrug · Mar 25, 2007

NoMo said:
The Deere 3520 has a Yanmar 3TNV84T 1.5L turbo-charged engine.

Interesting...the JD 3520 has exactly the same motor as in the Yanmar
CBL40 industrial tractor. Any idea what the turbo boost is? That
tractor is rated 37.2 motor hp like the Yanmar?

JSUnlimited · Mar 26, 2007

mikeyd said:
On the IHI turbo looks like you would be better off with either the Number 4 or 5. Looks like the TD025m would work but I have reservations. Another writer makes a very valid point about the inlets/outlets being very small on the IHI number3, I wonder if the TD025m poses the same problem. As I have stated to you before, I also don't like that the TD025m has to be oil and water cooled, just more work and something else to go wrong. I don't like the idea of capping off the water cooled part and only going with oil cooling as that is a very small turbo and it is spinning like crazy and generating a ton of heat. If the IHI does not need watercooling, or perhaps if there is another type TD025 that doesn't need it, or go the next size up, that maybe the better way to go. I like to go with the KISS principal when possible.

Mike, you are correct on the IHI RHF3. The inlet on the compressor side was a little over an 3/4" o.d. and the oulet was just over an inch. Still looking.

NoMo · Mar 26, 2007

dfkrug said:
Interesting...the JD 3520 has exactly the same motor as in the Yanmar CBL40 industrial tractor. Any idea what the turbo boost is? That
tractor is rated 37.2 motor hp like the Yanmar?

No idea on the boost. I did a quick search the other night when I made that post but could not find any kind of specs on the turbo itself.

Yes, Deere rates the engine at 37HP. They also have the 3720 which has the same engine, but adds an intercooler. It's rated at 44HP.

JSUnlimited · Apr 7, 2007

Just purchased a new turbo that should be more appropriate for my project. Its a new IHI RHB31 good for my engine size. It's a tad bigger than the RHF3 turbo mentioned a couple of posts earlier. Dimensions and specs look good. The good thing is it is only oil cooled and based on suggestions here, I believe I can work out the oil drain situation okay.

The seller included some stainless 45, 90 flange fittings and a plate of 1/4 inch stainless plate to make flanges.

So as soon as the brown truck arrives, I can get started on fabrication.

Also, I want to thank member "mikeyd" for the valuable info he has provided.