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Newbie Muffler Questions

akpasta
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Joined: Wed Oct 26, 2011 6:31 pm
Location: San Francisco

Newbie Muffler Questions

Post by akpasta » Sun Apr 22, 2012 9:17 pm

Had to pop off a muffler today to get the right-side cover off. I notice two things.

1. Where the header meets the exhaust pipe, here there is a crack. That's probably really common and from vibration. What can be done about it, and should anything be done about it? Also, the header is able to twist where the two are joined, at this spot . Is that normal or does that mean it's breaking?

2. I had to take the muffler off to get the side cover off and replace my clutch cable. To put the muffler back on, I need to pull the crush washer out of the exhaust port and install a new one right? Can someone give me a hand on how to install the muffler onto the engine properly? On other bikes I've fucked stuff up by not following a proper specification or missing a well-known vulnerable spot, etc. I don't want to make any mistakes. I've never done this before.

Thanks,

Andy

jensen
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Post by jensen » Mon Apr 23, 2012 12:28 am

assembly of Japanese motorcycles requires great peace of mind (Pirsig)

akpasta
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Posts: 342
Joined: Wed Oct 26, 2011 6:31 pm
Location: San Francisco

Post by akpasta » Mon Apr 23, 2012 10:42 pm

Thanks for the reply. I did the simple version of that, hahaha, and have no leaks. I basically just mounted the header loosely into the exhaust port, then loosely attached it to the mount on the right side engine cover, and loosely to the mount beneath the frame. Then I got the header pieces fitted into the right position on the engine and tigthened them down, THEN tightened down the bolts on the mounts. I figured this would position the header into the engine without any leaks and without any stress on the pipe (it had play), then I could tighten down on the supports. You guys think this is safe enough?

To be fair, there's cracking happening where the header meets the muffler, and I will likely have to have it welded at some point. Where do you take that sort of thing?

jensen
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Posts: 1143
Joined: Tue Feb 12, 2008 2:51 pm
Location: netherlands, huizen
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Post by jensen » Tue Apr 24, 2012 12:00 am

Hi,

Good luck,

Jensen
assembly of Japanese motorcycles requires great peace of mind (Pirsig)

LOUD MOUSE
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Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Re: Newbie Muffler Questions

Post by LOUD MOUSE » Tue Apr 24, 2012 9:15 am

The pipes ya show are the one piece issue and the head pipe doesn't move in and out. ..............lm
akpasta wrote:Had to pop off a muffler today to get the right-side cover off. I notice two things.

1. Where the header meets the exhaust pipe, here there is a crack. That's probably really common and from vibration. What can be done about it, and should anything be done about it? Also, the header is able to twist where the two are joined, at this spot . Is that normal or does that mean it's breaking?

2. I had to take the muffler off to get the side cover off and replace my clutch cable. To put the muffler back on, I need to pull the crush washer out of the exhaust port and install a new one right? Can someone give me a hand on how to install the muffler onto the engine properly? On other bikes I've fucked stuff up by not following a proper specification or missing a well-known vulnerable spot, etc. I don't want to make any mistakes. I've never done this before.

Thanks,

Andy

akpasta
honda305.com Member
Posts: 342
Joined: Wed Oct 26, 2011 6:31 pm
Location: San Francisco

Post by akpasta » Tue Apr 24, 2012 5:55 pm

Thanks for the clarification. To clarify the way it's moving, the header isn't moving in and out from where the header and muffler join, it can twist at that mating point. Is that not normal?

LOUD MOUSE
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Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Tue Apr 24, 2012 8:42 pm

As new they didn't move but they are not new any longer. .............lm

akpasta wrote:Thanks for the clarification. To clarify the way it's moving, the header isn't moving in and out from where the header and muffler join, it can twist at that mating point. Is that not normal?

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