Welding Headman Headers!

[rocmoc]

My NEW set of Headman Headers leak around the flange on a couple of tubes. Since I did a little redesign to clear my steering column I can't send them back. I have both a gas welder & mig. Which would you use? I am leaning toward the mig because of less heat applied to the flange limiting a warping issue.

Thanks,
rocmoc n AZ/Mexico

 

[cass]

your right on track. use as little hea as possible and go slow. the headers i just put on are just tached on the outside and welded on the inside.

 

[IOPort51]

anyway you go you will need to have the flange re surfaced or it will leak.

You will get a lot less stress from the oxyacetylene than the mig.

 

[coldair]

To bad you dont have a TIG wielder they work awsome for what you need to do. I'm with IO use the oxyacetylene.

 

[IOPort51]

consider brazing from the inside low temperature bronze.

I still think you will end up un flat.

 

[rocmoc]

The flanges already are not flat. Laid a file across the surface and was surprised. I can resurface so just need to close the opening.

Thanks everyone,
rocmoc n AZ/Mexico

 

[rocmoc]

Following the advice on here and reading a little more on the net, I braze weld the header today. Everything went fine. There was no warping of the flange and the port cleaned up nicely with a flat file. Cleaned up the other two flange openings as the seals were min. Should have a good seal on the header now!

Thanks,
rocmoc n AZ/Mexico

 

[rocmoc]

Installed the header yesterday. Everything is good. To assure I had a flat surface on the flange after welding and flat filing, I use a bodyman's speedboard with 90 grit paper. Worked great. You could see any low spots, a couple of very small ones, and with a bit of sanding the surface was slick, shiny & flat.

rocmoc n AZ/Mexico