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xs650 > > Motorcycle Systems > > Exhaust > > factory holes near flange |
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factory holes near flange
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camoweasel Full Member
Joined: Sep 14, 2006 Posts: 50
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Posted: June 10, 2007, 9:34 pm Post subject: factory holes near flange |
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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?
_________________ 1974 Yamaha TX650A |
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xsjohn Full Member
Joined: Jul 30, 2006 Posts: 5857 Location: North Carolina USSA
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Posted: June 11, 2007, 8:21 am Post subject: Re: factory holes near flange |
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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
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camoweasel Full Member
Joined: Sep 14, 2006 Posts: 50
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Posted: June 11, 2007, 6:07 pm Post subject: Re: factory holes near flange |
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well for the time being, high temp (orange) RTV will be my quick fix. Well see what heppens if I plug the holes.
_________________ 1974 Yamaha TX650A |
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silverfox Full Member
Joined: Jun 08, 2007 Posts: 102 Location: perth scotland
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Posted: June 15, 2007, 7:13 pm Post subject: Re: factory holes near flange |
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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
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