Reply to "Exhaust Manifold tips?"

jon3613Member

During restoration of the headers I had difficulty in removing the bolts not only due to the rust but also the flanges were twisted and not planar to the head. The flanges "sprung" after I got the last few bolts out. So even if I replaced the gaskets I wasn't sure that the force was sufficient to maintain a seal around each port. I used a torch to heat each header tube and gently bent the flange (using a rod in the port)into position and a gasket as a reference, then verifying on the head. I used a straight edge to verify flatness as well. This system worked well, no leaks since. I also chased the threads and use anti-seize as the others did. Note, since I had the headers off I added O2 sensor ports for the future. The finish is nickel plating.

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11/22/0610:11 AM

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