[makoman1860]

Yes you could tig it, or you can do what most radiator shops do and braze or solder it. Allstate 31FC is a popular brazing material, and Harris Al Core has been a popular soldering material. Zap is right though, normally the area is pinched shut first reguardless.

 

[makoman1860]

Boy that muggyweld is expensive. Most of the radiator shops around here use Harris Alcor, which is a zinc based alloy and is flux cored. Another popular one is BTI soldercraft 780. Alcor is about $20 a spool. [ame]http://www.amazon.com/dp/B002Z5Q7SC/ref=asc_df_B002Z5Q7SC1220711?tag=stylefeeder-20&creative=395261&creativeASIN=B002Z5Q7SC&linkCode=asn[/ame]
-Aaron

P.S. I forgot Harris Al-solder if you want a low temperature material. I think muggyweld is just a re-packaged Esab product.