cocorico said
The crank doesn't 'see' such a  temperature anyway - you can always touch the crank case, but not the cylinder head!  

Yeah I was reading up on that a while ago I was thinking of making some nylon plugs to put in the crank to fill the void and was quite surprised how low 2 stroke crankcase temps were but I suppose it makes sense when you think that atomised fuel/oil and air is constantly being sucked in and spun around in there.