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  1. #1
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,898

    Cool MIG welding cast iron exhaust manifold.

    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...Bob
    http://www.crownalloys.com/TechSheet...ew_Warning.pdf
    Attached Images Attached Images
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

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