You would need to buy a short engine in order to get the crankcase and they are expensive but mabe somone on the forum has a unit that has been written off and are willing to part with it.
Anyway here is a link to the sghort engine block CLICK HERE
Regards,
Bruce
Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
You may be able to try some JB weld just to seal the crankcase up again ,especially if it's just leaking oil.
Product Use JB Weld Original General metal repairs, very strong bond (sets in 4-6 hours, cures in 15-24 hrs). JB KwikWeld Faster setting version (sets in 6 minutes). JB Weld HighHeat Better for areas near engines or exhaust where high temps are expected. JB Weld SteelStik Putty version, good for quick patches, easy to mold.
Alternatives (similar products):
Devcon Plastic Steel
Permatex Cold Weld
Loctite Metal/Concrete Epoxy
Also seen second hand motors for $50. on eBay and Facebook marketplace.
Black Friday specials are coming up ,I usually see a new motor for $80.