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xs650 > > Motorcycle Systems > > Exhaust > > Stock headers / aftermarket Mufflers |
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Stock headers / aftermarket Mufflers
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pamcopete 650Rider Supporter
Joined: Oct 10, 2008 Posts: 875 Location: South Carolina
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Posted: May 27, 2009, 5:45 pm Post subject: Stock headers / aftermarket Mufflers |
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The stock headers are double walled, meaning that the "real" exhaust pipe is inside an outer pipe that is not supposed to carry any exhaust. People make the mistake of just clamping an aftermarket muffler to the outer pipe. The outer pipe has a couple of vent holes and it is not pressure proof welded to the flange that "plugs" into the exhaust port, so the whole deal leaks like crazy.
Here is a pic of the inner pipe.
Here is a possible solution that I use on my '81/H with stock headers and aftermarket mufflers.
First, go to your local auto supply store and buy a couple of these adapters:
The part number is 548520. They are a 1 1/2 ID to 1 3/8 OD adapter.
Clamp the muffler to the larger end of the adapter:
Insert the muffler with the adapter over the inner pipe:
The fit is very tight, but you can also use some muffler sealer to ensure a leak proof fit, or just wait a few days for the accumulaiton of carbon to do the job for you.
_________________ Ride.Enjoy.Life is simple |
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xs1961 650Rider Supporter
Joined: Apr 23, 2007 Posts: 1808 Location: uk
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Posted: May 27, 2009, 6:05 pm Post subject: Re: Stock headers / aftermarket Mufflers |
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Thats good ..
Are there still stock downpipes out there...?
_________________ 1 running 650
2.5 bikes in bits,
no time,
gradually losing intrest... God help me... |
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Everything_To_Xs Full Member
Joined: Apr 01, 2008 Posts: 148 Location: Wolverhampton england
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Posted: May 27, 2009, 7:20 pm Post subject: Re: Stock headers / aftermarket Mufflers |
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Yea my 81 has stock pipes
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borjawil Full Member
Joined: Feb 17, 2009 Posts: 535 Location: east lansing, MI
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Posted: June 1, 2009, 11:50 pm Post subject: Re: Stock headers / aftermarket Mufflers |
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what if the inner tube is removed? would it make difference?
_________________ Fixing up a 1981 xs650 |
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