I have had a complete 181 for a while, it actually had a decent 288 top on it when I checked it out. It never seemed to idle right so I did a vac test and the flywheel side seal was toast. Well the case on the other side had a serious crack. I figured I should go all out clean it up, put in new bearings and seals.
here is the pic of the busted case.
here is the pic of the busted case.