You guys know how hard it is sometime to weld an old junky exhaust manifold? I have done hundreds of them over the last 34 years most of them stick with Ni rod and some brazed. Some worked well some didn't. So move ahead 30 years i picked up some Crown Alloys .035 44-30 mig wire for cast iron. Its used with Argon and works great. This manifold on my Geo Metro had a crack and it has been hissing for 4 months or so. I drove the car around to warm it up since i wasn't planning to remove it and hit the crack with a die grinder and a stone. Then i dabbed the mig wire in the clean area and triggered it right up the crack. It took about 30 seconds and sealed the crack right up. I let the car run for a few minutes and then let it cool. So far so good. The 2# spool is 75 bucks and i wanted to try it out for a test.
UPDATE since i welded this. The car now has 4,000 miles on this fix and its still perfect...Bob
The repaired part is still perfect. I have been welding cast iron for at least 34 years and wish this wire had been out sooner it sure would have made some jobs easier. I have a few parts that need built up and polished off...Bob
Bob Wright
Metal Master Fab
Salem Ohio
Birthplace of the Silver and Deming drill bit.
5 Lathes, SBL Shaper, Lewis Mill, 7 drill presses, 5 welders...
Bob, is that stuff available in flux cored wire? Although my welder can use shielding gas I'd rather not have to buy a cylinder as well as the wire just for a cast iron welding experiment on my broken shaper (don't ask how it got broken).
(04-22-2012, 08:33 AM)stevec Wrote: Bob, is that stuff available in flux cored wire? Although my welder can use shielding gas I'd rather not have to buy a cylinder as well as the wire just for a cast iron welding experiment on my broken shaper (don't ask how it got broken).
No the wire needs the gas, sorry...Bob
Bob Wright
Metal Master Fab
Salem Ohio
Birthplace of the Silver and Deming drill bit.
5 Lathes, SBL Shaper, Lewis Mill, 7 drill presses, 5 welders...
