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Re: crack in exhaust manifold M how to fix ?
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Posted by george md on July 26, 2007 at 22:51:59 from (12.177.53.100):
In Reply to: crack in exhaust manifold M how to fix ? posted by roger roland on July 26, 2007 at 18:51:56:
Roger, Brazing is a good repair for cast ,but leaves a bit to be desired for manifolds because of the thermal cycling and the difference in the expansion rates between braze and cast iron. A better repair is oxy/acet with cast iron rod (cast iron in stick form),with that process the base material and the repair material are the same. Here are two pictures ,one before and one after repair with oxy/ acet. george
Showing back of the broken heater box
assembled box , back side
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