Anyone Know About Welding?

You could try this I copied it off a web site  

Lumiweld Kit can be used anywhere to make a strong fused joint [similar to brazing], using only a butane blow lamp as a heat source. It will work on almost any type or grade of aluminium including Dural, Birmabrite [Land Rover bodywork], zinc alloys, Mazak, pot metal and die cast, resulting in a joint stronger than the parent metal. Tried and tested widely in motorcycle magazine workshops, Lumiweld has hundreds of applications for the car restorer too, such as broken carb flanges, thermostat housings, rocker covers, cracked aluminium engine blocks and cylinder heads, etc.