I have a spare engine that has been bashed about a bit. A couple of the crank case lugs (which take the through bolts) are mostly broken away.
Is there a fix for this? I read about 'aluminium solder' (e.g. Lumiweld) but fixing it would need building up a lug and drilling - not just welding a missing bit back on - and I suspect that would need a mould of some sort.
This must be a common problem - especially for bikes without a bash plate.
Are there any ideas or, preferably, experiences out there? I suspect a professional welder is the way to go.