Inliners International Forums General Discussion Engines getting realy fed up with this

Thanks Bill,I'm begining to think there's a crack somewhere,its not smoking till the engine is good and hot,normal temp for about an hour,having the crank lock up suddenly,all that force has to go somewhere..smoke smells wrong for one problem,smells oily,watery,mixturey,like a very tired engine.but this isn't. ho hum..any clues on crack finding,dont meen sniffer dogs an big hairy coppers either