If your frame is aluminum, I imagine it has nutserts or riv-nuts.
I don't believe there will be enough meat(metal)to drill out and re-tap with a Heli-coil.

Probably should take it to a good bike shop and get a opinion.


http://www.avkfasteners.com/
http://www.bollhoff.com/web/usa/en/w...ts_rivkle.html
http://www.bylerrivet.com/products/r...s.aspx?cat=237
http://www.enfasco.com/frame4.htm