Case 646 Poor Condition, Whats it Worth

[oliver244]

I can't give very accurate information on the spot, but I can tell you the the K321 and K341 blocks are entirely different, the K341 has a much higher crankshaft height for example. Not sure how it compares to the CCKA. Nothing is impossible, given enough time and effort. I would suggest that the pto side of the K341 will not accept the standard pump mount as used on the GT's and 644. that bracket would have to be fabricated and the frame modified to get the crankshaft height correct. Also, the Kohlers used on the Case/Ingersoll models all were narrow blocks with the modified oil pan as designated by the "A" after the K321 etc. K341's were never offered that way so all have the 2 quart pan which gives you an even higher crankshaft position before even considering the taller block.

Bob

Bob I'm not familiar with the 18hp K361 and wonder if your thinking about it.
I have a k321 wide base block and a k341 narrow base block which is off my sons Wheel Horse C161. The WH C161 uses the narrow base block in a rubber bushing mounted cradle. Both blocks have the same crankshaft height and both were made in narrow and wide flange blocks.

The gray block is the K341 and the blackish block is the K321.

While were talking about blocks, does the Case hydraulic pump need the raised machined boss on the Output shaft side of the block?

This k321 block off a Power King uses the raised boss to locate the clutch housing. Regrettable its scrap as came to me with a thrown rod that took out the camshaft mounting tube part of the block

[DavidBarkey]

I am no expert on this , but here is what I have surmised . The raised boss is not actually raised , but rather the outer material is removed concentric with the crankshaft bearing bore to centre the pump bracket for alignment purposes. I have a couple of low hour generator blocks I am going to have machined . One for a Case and one for a old IH cub cadet . The Case block needs the boss and bolt holes for the small oil pan done . The Cub cadet just need the small oil pan bolts.