Anyone have a M12x1.5 thread repair kit?

What is a secondhand sump worth?
Oh and there are other methods. Doesn't matter now though cause you have paid your money but.....
If you removed the sump, drilled the plug hole out to 14mm then filled it with a liquid metal ( found out today how bloody good Belzona is - go google em. Have an unlimited supply through work ) you could basically re-tap the standard size and away you go. Still Teflon tape and a fibre washer would have sufficed
Seriously you should take advantage of your grunts in the workshop - bloody engineers
Good advice from Mick though. Makes perfect sense but how many others would scream "Doh!!" before they realised they should have taken precautions? ---- Now there is a loaded question.

Engine in. I've seen a tutorial on a disassembled postie bike showing how to do it with minimal swarf (as if it were being done on the bike). You pack the drill bit and tap with grease, go slow, and wipe a greased coathanger or something around the inside. Fingers crossed. Besides, there's a chance that this engine would munch soft aluminium swarf, IIRC it doesn't have any plain bearings, they're all rolling bearings like a two stroke.

Adrian, if you saw how anal this report I'm writing needs to be, you'd be surprised that I'm even able to change my own oil Bloody aerospace traceability. No wonder you don't get flying prototypes six months after conception anymore. This is a design company so there aren't any grunts around, although my boss/director in the UK used to be a RAF mechanic so he's got a fair bit of practical knowledge.

I won. Bike runs and doesn't leak.
I ended up taking the chuck off my drill press and turning it with my hand to drill the hole because the disassembled drill press didn't have enough torque to turn the 12.4 mm bit! I drilled through a $1 Bunnings socket to use it as a guide, because the only surface perpendicular to the hole was the spot face around the hole. The hole is slightly non cylindrical but it works well enough. I was furious when the tap kept slipping when starting the hole but it ended up being a decent thread most of the way through.
Thanks for the advice guys.

What is a secondhand sump worth?
Oh and there are other methods. Doesn't matter now though cause you have paid your money but.....
If you removed the sump, drilled the plug hole out to 14mm then filled it with a liquid metal ( found out today how bloody good Belzona is - go google em. Have an unlimited supply through work ) you could basically re-tap the standard size and away you go. Still Teflon tape and a fibre washer would have sufficed
Seriously you should take advantage of your grunts in the workshop - bloody engineers
Good advice from Mick though. Makes perfect sense but how many others would scream "Doh!!" before they realised they should have taken precautions? ---- Now there is a loaded question.

Belzona is the ducks guts, although quite pricey. We actually used to use it to repair leaks on our high voltage transformers. The stuff is THAT good that you can actually machine it once it's set.

If it can be used on 500k HV transformers, then I'm fairly sure you could adapt it to your bike!