140 Repower
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I was tempted to do the same thing and did some figuring and there was no way it would fit without stretching the frame.
There is a 20 HP V Twin version of the 10 HP Yanmar/China clone single cylinder diesel that's been readily available on eBay for a few years. That engine has been put into a 110 that's been on this site. If you can find the V Twin, it would be perfect for the 140 if you could:
Allow for differences in the length/width of the block base between the K321 and China diesel.
The hight of the crank vs. the K321.
Adapt some sort of stub shaft to the flywheel/ blower end to mate up with the 140 driveshaft. There are three or four small threaded holes on the China diesel to mount the recoil start but I don't think they are big enough for a stub shaft.
I have to check if the bolt holes on the other end are universal to fit the electromagnetic PTO. The oil filter is about even with the crank center, so it looks like it will clear the frame, unlike the B&S Vanguard conversion, where it has to be mounted remote or not at all. The right side frame rail would have to be boxed out to clear the electric starter.
These have been good engines for me. I have two 5KW generators with them, and another that will go into a Bolens 1050 tube frame tractor for a future project. I love the idea of the V Twin in my 140. That engine has two of the same cylinder heads of the 10 HP on a common 90 degree crank. It is still air cooled, so you don't have to worry about space for a radiator. Anyhow, the pushrod K361 is still going into my '69 140. It will be a lot easier to find another 140 than the V Twin China diesel. They are not that common yet. I have a photo somewhere that I will try to post. I just don't have it available in time for this thread.
Stephen
Allow for differences in the length/width of the block base between the K321 and China diesel.
The hight of the crank vs. the K321.
Adapt some sort of stub shaft to the flywheel/ blower end to mate up with the 140 driveshaft. There are three or four small threaded holes on the China diesel to mount the recoil start but I don't think they are big enough for a stub shaft.
I have to check if the bolt holes on the other end are universal to fit the electromagnetic PTO. The oil filter is about even with the crank center, so it looks like it will clear the frame, unlike the B&S Vanguard conversion, where it has to be mounted remote or not at all. The right side frame rail would have to be boxed out to clear the electric starter.
These have been good engines for me. I have two 5KW generators with them, and another that will go into a Bolens 1050 tube frame tractor for a future project. I love the idea of the V Twin in my 140. That engine has two of the same cylinder heads of the 10 HP on a common 90 degree crank. It is still air cooled, so you don't have to worry about space for a radiator. Anyhow, the pushrod K361 is still going into my '69 140. It will be a lot easier to find another 140 than the V Twin China diesel. They are not that common yet. I have a photo somewhere that I will try to post. I just don't have it available in time for this thread.
Stephen
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6,867 Posts
Is it just me or is the muffler VERY close to the fuel tank.
From what I have heard about 355 garden tractor (twin cylinder Diesels) they rattle bad and are noisy. I think those are yanmars in the tractors.
For 140, you may be better off with a single since the frame and hood are pretty narrow.
From what I have heard about 355 garden tractor (twin cylinder Diesels) they rattle bad and are noisy. I think those are yanmars in the tractors.
For 140, you may be better off with a single since the frame and hood are pretty narrow.
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452 Posts
Mathew,
I once seen a 140 repowered at a show with a china diesel from "Princess Auto" here. Never heard it run though but kind of looked funny with a small engine. Also the problem he ran into was the rotation of the motor and the hydrostat. The motor was turning backwards after it was installed and the hydrostat wouldn't work
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so he had to flip the motor around.
I once seen a 140 repowered at a show with a china diesel from "Princess Auto" here. Never heard it run though but kind of looked funny with a small engine. Also the problem he ran into was the rotation of the motor and the hydrostat. The motor was turning backwards after it was installed and the hydrostat wouldn't work
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270 Posts
I am honestly thinking of doing a frame stretch and installing a diesel in my '73 140. The motor is not in that great of shape and kinda needs replaced and the 140 in general needs hood work and a good refurbishment. I will keep you posted when I get back from my 3 month trip away from home.
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234 Posts
bill installed one in a 140. I bet you could email him for info. I don't think he stretched the frame. here is a link scroll down a little and you can see the pictures.
http://www.wfmachines.com/forums/sh...diesel-into-420-project?highlight=kubota+d722
http://www.wfmachines.com/forums/sh...diesel-into-420-project?highlight=kubota+d722
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308 Posts
A Kubota D602 should fit without any trouble. It's a very compact in-line twin cyclinder, 16 HP at 3600 rpm -- a very good match for the 140.:thumb:
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270 Posts
That is a good idea on the Z602. Thank you very much. I would like this to be a primary mower and snow removal machine. I will look into this further. Now if I could only find one.
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270 Posts
Good call on that one too. Not as much bite, but very suitable. I am personally hoping to find a Z602 though. I am having trouble finding either one though. I did find a Z602 on one site, but they want $5,500 for it plus shipping of $500. I think that is a little steep even for a new engine. I guess I am asking for some help on finding one. I am getting ready to start tearing the tractor down within a month or so.
Fastenall. My bet is that they only charge $150.
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270 Posts
Craig, can I ask you to get a few measurements on the radiator for me. I might be interested in that engine and radiator. Also,did that tractor have a front PTO like the Deere's?
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