johnb
New Member
Posts: 25
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Post by johnb on Jul 12, 2007 18:44:04 GMT -5
I have a 1978 SR-500 that I put back on a stock exhaust system. I noticed that there is a small hole in the exhaust header both at the top and bottom by the muffler. These are nice round holes not rust. so now the bike has an exhaust leak at both places. It isn't loud just annoying. Is this the way they come from the factory or did someone drill them for some strange reason. If they are factory what are they for and will it hurt if I break out the welder and fill them in. Thanks JohnB
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Post by G Man on Jul 12, 2007 20:16:19 GMT -5
Hi John. The stock header pipe is a double walled pipe. The holes are there from the factory to allow for condensation or what not to escape. If you have exhaust coming from them, that means that your inner wall has been compromised and is allowing the exhaust pressure to enter between the walls and escape through the holes.
Hope this helps.
G Man
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Post by StewRoss on Jul 13, 2007 5:43:05 GMT -5
Hi, It is common for the inner pipes to crack at the first bend on the inside...I have few like that...not much you can do...it will probably start to blue there eventually as well. Unless it worries you leave it...or look at getting another one or an aftermarket single walled pipe. SR  |
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Post by miker on Jul 16, 2007 12:22:20 GMT -5
Mines been that way for a year now.. same thing, pipe looks fine but exhaust comes out the condensation hole.
Another stock header I have must have had the same problem, both holes were welded up. I don't see why that wouldn't work fine as well. Once I get around to painting that one I'll start using it.
miker
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Post by tradrockrat on Sept 9, 2007 0:42:21 GMT -5
my inner pipe melted and folded itself over, almost totally blocking the exhaust from escaping - in the middle of a ride on the 101 freeway in Southern California...
Course I had no idea that was what was wrong.
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