factory holes near flange

camoweasel · Full Member Joined: Sep 14, 2006 Posts: 50

I recently took off my right header pipe because of the carbon accumulating around the flange near the head. I noticed that there were 3 drilled holes near the flange that came from the factory. It looks like the flange slid into the header and was tac welded into the header from the factory. If I blow air from the other side of the pipe while blocking the top, air comes out those 3 holes. This is where the carbon is coming from. I just want to mig weld the holes shut but I was told they may have been there for a reason for some kind of vent? Has anyone had to deal with this and what are those holes for?

xsjohn · Posted: June 11, 2007, 8:21 am Post subject: Re: factory holes near flange

To let moisture out from between the outer and inner pipes i think.....Maybe you could find where the exhaust is getting into the liner and fix it there...either end most likely.....

John

camoweasel · Full Member Joined: Sep 14, 2006 Posts: 50

well for the time being, high temp (orange) RTV will be my quick fix. Well see what heppens if I plug the holes.

silverfox · Posted: June 15, 2007, 7:13 pm Post subject: Re: factory holes near flange

i was told the holes in the outer down pipe were to help cooling and stop the nice chrome from turning blue with the heat Question

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