My Willys 3A and 3B Community
3A, 3B, DJ Technical Knowledge Base => "Modifications"-- Technical Questions, Answers, Incites => Topic started by: Quebec Jeep on March 26, 2013, 01:43:52 PM
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It's the first time that I heard about this. I'm not a big fan of modifications but I though someone here might be interested by it.
I'm not even sure if I can post those ads here. Bill or John let me know and I will remove it.
Jeep Willys Kubota V2003/V2203/V2403 Diesel Conversion Kit $999.95
Overland Diesel.com's Kubota 03 Series diesel engine to Early Jeep T90 Conversion Kit! As seen in current JP Magazine!
Replace the worn out 134 F or L engine in your old Jeep with a V2003/V2203/V2403 Kubota Diesel! This kit gives you the main components needed to make the adaption!
The Kit includes:
-CNC milled High Quality Aluminium(6061-T6) Adapter Plate
- Kubota flywheel modified with Pilot Bearing and early Jeep Clutch bolt pattern (Auburn style )
-Weld in engine bracket system using soft mounts/ Hardware
Metric Hardware to mount adapter to engine
* Bellhousings on early CJ's with starter bushing built in, will need to change to the later nose cone style starter bellhousing to fit Kubota flywheel.
(http://pages.videotron.com/lavoip/index_files/Forum/Jdiesel1.JPG)
(http://pages.videotron.com/lavoip/index_files/Forum/Jdiesel2.JPG)
(http://pages.videotron.com/lavoip/index_files/Forum/Jdiesel3.JPG)
(http://pages.videotron.com/lavoip/index_files/Forum/Jdiesel4.JPG)
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Your post is OK, Pascal. Neat stuff, not something I would do unless gas gets crazy and diesel is still cheep. But if I found a Kubota engine on my front porch I'd definitely be getting hold of these guys.
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If someone couldn't find a decent L head that's a pretty neat idea. Looks like a nice clean fit too. I wonder if they require two batteries?
Doesn't look like a big performance gain except for the 4cyl turbo version. engine specs...http://www.countrysalesandservice.com/pdfs/Super03.pdf
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I always thought that might be a good conversion, especially if you could spec the motor with enough torque to allow a guy to change the diffs to 4.18 or even a 3.72. Nice way to avoid over drives and keep your engine speed down. Just thinking.
Todd
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Diesel nut that I am, I say, "Very, very cool."
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I think it is very cool. Before I rebuilt another V6 for the Jalopy, I was considering a diesel swap.
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I have actually thought about doing this is I were to get a second jeep that was going to be a daily driver. Because I already have a Toyota 3 cylinder sitting in my shed right now. 8-)
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How much HP and torque do these kubota engines put out?
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A quick look at a conversion chart I found online reveals that the "ps" figures shown on the Kubota pdf are very close to hp figures, which means the turbo diesel (as shown in the pic) would have about 45-55 hp and over 100 lbs of torque. Pretty nice.
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So these engines for this modification have less HP than the Lhead? Do they get better milage than the Lhead? Sorry for all these questions, I'm trying to justify spending a grand on the kit and another couple grand on an engine. So far torque is the only thing I'm seeing.
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Imho, I'm no expert by no means, but the advantage to me would be mileage, and the coolness factor of having a diesel jeep, the kubotas I've delt with are very fuel efficient and very reliable. I would think a turbo charged model would be better than a L head at higher elevations. But, most kubotas, like most small diesels, run at 3,000 rpms max, and really dont have any power to about 2300 or so. that would mean 45 MPH with stock gearing and transmission, without a OD, and have other drivability issues. I'm sure there are fixes for these issues, but rebuilding a l head isn't that expensive. Again, just my uneducated, just judging by experience opinon.
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I agree with gmcjr. Fuel mileage, coolness. There is no way a diesel conversion in a flatfender could ever be "cost-effective."
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I'm guessing you would have to have a OD with a diesel, just to be a gear spiltter, so you wouldn't lose as much rpms between shifts. Just a thought.
I wonder what the weight difference would be?
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Here's one in action:
https://www.youtube.com/watch?v=3W6QrFM6nyg
https://www.youtube.com/watch?v=4NzMbGuLSTU
https://www.youtube.com/watch?v=DZPsPQs3wR4
https://www.youtube.com/watch?v=uNVfYaS7tcs
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The air intake goes back under the cowl, I wonder what kinda air filter he's running.
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Here's one in action:
https://www.youtube.com/watch?v=3W6QrFM6nyg
https://www.youtube.com/watch?v=4NzMbGuLSTU
https://www.youtube.com/watch?v=DZPsPQs3wR4
https://www.youtube.com/watch?v=uNVfYaS7tcs
That looks to be the same one in QuebecJeep's ad, only because there appears to be a small siren mounted on the fender next to the alternator, both in the ad and the videos. I must be dreaming. :-)
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Just an opinionated old fart, but I just don't see any real "upgrade" with that. Marginally better torque and no doubt much better mileage, but less drivable for most uses.
I have had 4 Benz diesels over the years, starting with a 190Db, then a 240D, followed by a 300SD (617 turbo), and the last a 300CD (also 617 turbo). Each and every one was a royal pain in the posterior when temps got below zero F. The non-turbo 190 and 240 D were totally gutless and I well remember being in 2nd gear on I70 in CO trying to keep 20 mph while everyone is zooming by at 75 mph and watching my butt hoping not to have to hit the ditch to keep from getting a plastic/metal enema. The 617 turbos were WAY better, but with a highly significant turbo lag that caused a big drivability issue. However, once spooled up, those engines have enough torque to do just about anything, including going over both I70 and I90 passes at 75 mph.
For less money-probably a lot less money, there could be a small block Chevy under there, custom built to suit your driving style and needs, something that has two to three times the torque and gets 50% better mileage than the L head. If you are going to hack it anyway, I just can't see that the tractor motor has any real merit.
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That specific Kubota might not be the right motor for a project, it is convienent that all of the attachments are available. I was looking at a Yanmar conversion at one time when I was having all kinds of motor trouble. There are several 3 cylinder diesels available that are popular with agriculture, marine and stationary applications. I think the 3 cylinder would be a nice fit, especially one of the larger ones, horsepower and torque, But as the same with the sbc you would have to fabricate all of your own attachment points and linkages. Never easy.
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I dig it. Course I'm biased since I'm putting a diesel in my MB. There is a guy in the willys section on pirate4x4 building a flatty with this motor.
Definitely something I'd consider doing. It would be nice to be able to burn used motor oil as fuel. :D
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I dig it. Course I'm biased since I'm putting a diesel in my MB. There is a guy in the willys section on pirate4x4 building a flatty with this motor.
Definitely something I'd consider doing. It would be nice to be able to burn used motor oil as fuel. :D
Wouldn't work, sorry. :'(
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Why do you say that? A mechanically injected engine will burn oil. Even the TDI motors can have "runaway" from a blown turbo seal sending oil into the cylinders and the motor will keep running even when the fuel is shutoff.
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An Isuzu 4BD-1T or 2T would be a better swap. More HP and more tranny options since it can be adapted to an SBC bell or a SBF bell. And it will fit in a low hood flatty. It will be close, but will work. I thought about doing this to the Jalopy before I rebuilt another 225 V6 for it.