Case 680CK Backhoe

MH55

Member
Friend has an early 680CK that broke a rod the other day. Trying to find out what engine is in this machine and if it was in any other tractors. Needs a block, has a hole in the side... A long block would make for an easy swap. Can't seem to find much info on these machines. Lot of info for 530's/580's. Any help would be greatly appreciated. Hate to see this old machine partsed out...

Derrick
 
I think I read, not positive, that the 680 CK used the same engine as the 830. Pretty sure 630 and 580 used the same engines.

430, 530 and 630 all used the 188 diesel but injection pump was set differently on all. All gas engines were different displacements on these 3.

Jim
 
The 680 uses the same engine as the 870 farm tractor (336 cid). It"s engine is much bigger than the 530/580 series.
 
The 730/830/930/1030 engines were all power cell engines. The 770, 870, 970, 1070, and up were all direct injection. The 680 backhoe used the direct injection engine with 336 CID which is the same as the 870.
 
The early 680's used the powercell engine as in the 730, I believe the first to use a direct injection was the 680 C, but for sure an early 680 should not be direct injection as was in the 870. Either a 400-700-800- 730-830 will fit but with their respective HP ratings. Tom could be right on the 301 in the C but I believe it was a direct injection. mEl
 
Will the later engines bolt into the early chassis?
Would greatly open up options for finding a new engine for this old beast...
 
Yes, linkages and other small items should be easy to overcome. Crank flange front casting pattern all the same, may have to use a couple different capscrews for the flywheel pattern as the early engine had two dowell bolts and the later just six grade 8 fine thread bolts. mEl
 

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