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From Small To Larger Diesel.


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#1 Cvans ONLINE  

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Posted October 08, 2013 - 09:15 PM

Have a couple of diesel projects this winter so I thought I better get started. 

Several years ago I purchased a Kubota G4200 garden tractor. It's a 2 cyl. 12hp. (Z430) diesel of 430cc displacement. I've had a Kubota snow blower for this series of tractor and gave it a try last winter. The little 12hp. engine is definitely short of ponies for this large blower. 

I was able to locate a 3 cyl. Kubota (D950) 950cc, 21.5hp. diesel engine for very reasonable so the snow blower is going to have plenty of power this winter. As you can see in the following photo there is a big difference in the size of these two engines which is going to necessitate lengthening the frame 6 inches. 

D950 005.JPG

 

 

The first thing needing change was the belt pulley adapter that bolts to the flywheel. It needed to have the shoulder machined off of the face, the outside diameter reduced, and new mounting holes drilled and taped into the flywheel and pulley adapter.

D950 001.JPG D950 002.JPG

 

 

Next some material had to be removed from the engines back plate so the engine could set down into the frame rails. 

D950 003.JPG D950 004.JPG

 

Then the flywheel was replaced along with the pulley adapter. Fortunately the drive shaft adapter on the front of both engines used the same bolt pattern so nothing needed to be done there. 

d950 007 (2).JPG

 

And here is going to be the new home for the D950.

D950 007.JPG

 

 

 


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#2 olcowhand OFFLINE  

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Posted October 08, 2013 - 09:17 PM

Woohoo....love this project! 


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#3 bowtiebutler956 OFFLINE  

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Posted October 08, 2013 - 09:26 PM

 This is going to be good! Love it! :thumbs: 

 

Matt


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#4 Talntedmrgreen ONLINE  

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Posted October 09, 2013 - 05:21 AM

Cool!



#5 KennyP ONLINE  

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Posted October 09, 2013 - 07:06 AM

That should perk it up. I take it you haven't extended the frame as yet?



#6 Cvans ONLINE  

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Posted October 09, 2013 - 09:15 AM

 

I take it you haven't extended the frame as yet?

 

 

Not yet. This gets worked on between fishing trips this time of year. I've had the engine hanging in the frame to get measurements.

Fortunately I have another tractor like this for parts will use it for the frame parts I need to extend this one. Hopefully tomorrow I will extend it and then drop the engine in. Today it's off to the lake.  :thumbs:


Edited by Cvans, October 09, 2013 - 09:16 AM.


#7 JDBrian OFFLINE  

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Posted October 09, 2013 - 10:37 AM

That should make the snow fly. Does the larger engine rev as high as the 2 cylinder one. You may have to change pulley sizes to maintain the same blower speed.


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#8 Dieselcubmike OFFLINE  

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Posted October 09, 2013 - 11:05 AM

Chris youll love the power of the 950. They run very well and are easy to get a few extra ponies out of just in case its needed. What tractor is this going into? 


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#9 Cvans ONLINE  

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Posted October 09, 2013 - 11:24 AM

 

 

What tractor is this going into? 

 

Kubota G4200. 



#10 Cvans ONLINE  

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Posted October 09, 2013 - 11:26 AM

 

 

Does the larger engine rev as high as the 2 cylinder one.

 

Rpm's should be fine. 

Thinking about speeding the blower up a little to throw the snow farther.   :smilewink:



#11 Cvans ONLINE  

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Posted October 10, 2013 - 09:28 PM

This afternoon I was able to spend a few hours working on the frame. I had forgotten that I had installed a Lister-Petters into 

 the frame at one time. So after removing the modifications both frames were cut and welded back together. 

This is where the project stands as of this evening. 

D950 001 (2).JPG

D950 002 (2).JPG

D950 003 (2).JPG


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#12 wvbuzzmaster ONLINE  

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Posted October 10, 2013 - 10:44 PM

Looks like you are making good progress.
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#13 Trav1s ONLINE  

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Posted October 14, 2013 - 10:22 PM

That 12 would be perfect for a 140  :smilewink:



#14 Texas Deere and Horse OFFLINE  

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Posted October 14, 2013 - 11:58 PM

Chris, you are getting there, I think it will handle the faster running SB with ho problems. :thumbs:


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#15 Cvans ONLINE  

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Posted October 15, 2013 - 12:26 AM

Here are some photos of where I left off on Saturday evening. I came in at 10:30 tonight and was too tired to start taking photos and down loading them. Will get some more tomorrow. 

The engine was mounted, PTO spacer made, and drive shaft installed. 

Hope to have it running and moving under it's own power tomorrow. 

D950 007.JPG

D950 005.JPG

D950 003.JPG

D950 002.JPG


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