Exhaust system alert

Exhaust System Alert Extra attention badly needed By Greg Napert April 1998 ohn Sturch, general manager of Wall Colmonoy Corporation, says that approximately 20 to 30 percent of all exhaust systems sent to Wall Colmonoy are in such bad...


"We won't repair a muffler to fit a bent stack. We put the muffler back to original specs and then fix the stacks," Dawley explains. "That becomes a big problem for those who feel there's nothing wrong with their stacks. They have to understand that heating and cooling cycles change the way these things fit. The tubes can't be bent back into shape because there is too much stress in the metal. Also, there's really not enough material to be bending the tubes. The proper way to make the repair is to replace the tubes where they're bent. That way you don't weld any stresses into it," says Dawley.

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