Swapping the 10HP kohler for a 12HP kohler

[bell 11]

I have a 12HP kohler on a Cub Cadet 124 (1967-ish) That I bought... (I still need to go pick it up)...

I was wondering if anybody had an idea if I could use the 12HP to replace the 10HP on my 1975 B-100?

I should be able to tell by looking/ measuring, but the cub is 100 miles away and I don't have time to go pick it up yet... Thanks, Jon

[BairleaFarm 339]

I think the blocks are the same size so it should fit. I put a 10hp on a 73 4speed so you should have to room as far as other parts are concerened.

[big mike 13]

Jon,the Cub uses a narrow pan(no ears) and is not flat like the W/H(has a sump on one end) and would require drilling holes or making an adapter plate.You would also want to use your W/H bracketry as the starter generator from the Cub runs off the PTO end of the crank.

[bell 11]

Jon,the Cub uses a narrow pan(no ears) and is not flat like the W/H(has a sump on one end) and would require drilling holes or making an adapter plate.You would also want to use your W/H bracketry as the starter generator from the Cub runs off the PTO end of the crank.

That sounds do-able... I've read that the pans will interchange from the 10-12 hp... So, Hopefully, the crankshafts are the same...

[big mike 13]

Jon,you'll have to use the Cub pan.The W/H block has flanges on the ends for the pan,the Cub does not have the flanges and bolts up through pan and into blind holes in the block.

[TT-(Moderator) 1,129]

The CC engine most likely has a one inch crankshaft. (WH should be 1 1/8")

The blocks are different too. The CC block has a small oil pan and no ears to mount the large WH style oil pan.

I recommend scratching the idea. B)

[bell 11]

The CC engine most likely has a one inch crankshaft. (WH should be 1 1/8")

The blocks are different too. The CC block has a small oil pan and no ears to mount the large WH style oil pan.

I recommend scratching the idea.

Probably a good idea... I could probably get some decent $ out of the cub anyhow... It's pretty complete and in pretty good shape... Just the wrong color.. lol :whistle:

[big mike 13]

Nahhhh.....it's juuuust right B)