Bought a D662 Kubota engine today
 

I hope to get it home in a couple of days. This is supposed to be a 18 horsepower model. It's condition is unknown, so I am looking forward to checking it out. It will go in one of the two 782's I picked up a couple of weeks ago.

Congrats Jim on the Kubota Engine!
Looking forward to pics!

What Mike said! I'll be watching this! :beerchug:

Pulled the D662 out of the Jacobson golf course mower frame yesterday and cleaned it up today. Fixed the stuck starter solenoid and got to crank it over and found compression, so it should run. Thankfully, there were no broken rod sounds like the KT 17 had! Gotta take a break from it for a couple of weeks and then the fun of installing it in the 782 will begin. The required picture is attached.

Diesel looks good Jim!
Looking forward to the install!:beerchug:

how will you be making the motor mounts?

Nice diesel! Looking forward to your updates.

I am in the process of doing the same thing on my 682. The Jacobson I got a hold of had the 950 engine in it and it appears to be allot taller then the 600. Unfortunately I have been unable to get any work done on it. I will be watching your progress.:beerchug:

Regarding the mounting-I am not sure yet. I plan to use the front engine/ radiator mount which came with the engine and modify it to fit. I have looked at the IPB of the engine and its mounting that is in the Chassis Manual (Illust. 1-151 Power unit exploded view) and will try to use that as a guide. I sure wish I knew someone locally with a real 782D so I could see firsthand how CCC did it. Oh well, it may not be as pretty, but we will make it work.

782D project has ended
 

A friend who repairs lots of Kubota engines in large commercial mowers told me I should pull the head on my D660 and make sure it was not cracked before I went too far with the 782D project. He sees a lot of them that have been cracked due to overheating. Mine came out of a Jacobsen golf course mower. Sure enough, it has multiple small cracks and cannot be used. I don't want to spend the money for a new one, so the 782 will be getting a different engine. I still have the good K321 that I removed from the 1450 when I installed a k341, so it will be now go into the 782. That will make life much simpler and cheaper too. I now have several new "spares" for the 1782 too.

You just keepin the diesel motor? :bigthink:
It really isn't very easy to put the 14HP into the 782..... Granted, easier than a diesel conversion.... but not a "direct" switch.

Sorry to hear about the cracks.:angry:

I agree, that's a bummer.

Jim

Is it worth rebuilding? :bigthink:

J-Mech and Sam-
We did get the Kubota engine to start and run briefly when we first got it out of the old trashed out golf course mower frame. Since it was not plumbed to the radiator, we did not let it run long, but at least we knew it would run. There were no unusual noises other than unmuffled exhaust. From what we have seen, prices for heads can run $700 to $1300 and I am not willing to spend that kind of money on this. Right now I plan to take the engine to my machinist friend's shop. Hopefully, someday one of us can find a head and make use of it.
As for the K321 engine in the 782, what kind of problems do you forsee J-Mech? I expect some wiring differences, but what else should I look for? Any suggestions will be appreciated.

You should be able to find a used head. There are salvage yards for industrial mowing equipment. Where was it cracked? Between the valves? Some cracks aren't necessarily to worry about. Granted, I don't like them either, but I've taken a lot of running engines apart that had cracked heads that didn't have a single problem.

Maybe this will help.
Rebuilt cylinder head Kubota D600/640 $550
Used head E-Bay $350 buy it now
This stuff is out there. It only takes a few minutes of internet searching to find parts.

As far as going to a "K" series in the 782, it takes a different engine cradle, (the one from the 1450 might work, I don't know.) different wiring, (wiring shouldn't be too difficult) different driveshaft (again, the one from the 1450 may work, don't know). Like I said, not too major, but not a drop in. Why not just put another 2 cylinder in it? You can go with a KT, M, CH, Vangaurd, Onan, there are a lot of options.

I think you would need the cradle from a 1210. They had a Mag 12 in them. I had one and repowered it with a 16HP Vanguard.
Just my 2 cents but I think I'd look for a good used head for the Bota. The pics are how Cub mounted them in the 72 series tractors. If you want hi rez pics send me a PM with your e-mail address.

Agree with Jonathan, I'd stay with the Kubota plan just a little longer. Having a diesel GT is well worth some extra effort.

Thanks again for the suggestions guys. I have not totally given up on the idea of putting this or another Kubota in the 782. Right now I am working with limited space and have a 782 in pieces and a K321 in my way. Putting the two of them together would help with storage problems and allow me to play with the 782 a little until I decide what to do with it long term. I do have that nice 1782 diesel Super, just greedy and wanted to have two smokers. The D662 is not going away, but I do need to recover from Christmas before spending a bunch of money on the 782.

Just a thought, but you don't necessarily need to address the cracked head to mock up and fab your motor mounts, driveline, etc. I have plans on building something cool in the near future, and even with having all of the diesel specific things to get dimensions from, I think I'm going to go with a Kohler Command or Chinese v-twin diesel, but I would probably change my tune if a decent Kubota fell into my lap. In other words, the head will be the least of your worries. Sam is right, a cradle and driveshaft from a 1210 will be required for a plug and play K321AQS swap. You could modify the rails from a Quietline to work, as well. I wonder if you could solid mount the K321, with a short oil pan. ???

Update on the D662 and 1482
 

I finally located a good used Kubota D662 head. From what I have been told, the D600/640 heads would not work on this engine. Bought it Monday morning and USPS delivered it today! After finding the cracks in the original head I pulled the pan and checked the rods. Found one bearing that was beginning to fail and replaced the rod. I need to collect or fabricate a few more parts-gas tank, fan assy, muffler and alternator before installing the engine in the 782. I am not in too much of a hurry since I now have the K321 in it. I just finished a re-do of the 44C mower deck. I sprayed it with Van Sickle International Off White 471 70 paint using a gravity feed gun. I am pleased with the color. The deck is on the tractor and waiting for me to apply the new decals. I purchased one new bearing assy and my machinist friend built a second new one similar to what some others have recently wondered about whether it could be done or not. I purchased a couple of NICE high load double sealed bearings from McMaster Carr and my friend made a new shaft to fit and a couple of sleeves to go over the bearings. So far it is working fine, but testing time has been very limited.

Why did you replace the rod? What about the crank? What did it look like? Did you replace just one bearing? :bigthink::bigthink::bigthink:

A small piece of babbit was coming loose in the cap. The crank was fine.

So, you only replaced one bearing? :bigthink:

Yes, the others were fine.

Ok...... I wouldn't do that but it's your motor. If one was flaking, then the other are probably not far behind.

That is a possibility. After it has been run for a while I may pull the pan and check all of them again. It was only run briefly when I first got it so something else could show up when it is run for a longer period.