Hey folks - was hoping to solicit some advice from those out there who might be in the know, so that I might make an informed decision regarding how to proceed with my CB's exhaust as I work on the bike this winter.
Is anyone out there intimately familiar with these original Honda (HM317 stamped) mufflers, more specifically the interiors? I ask because this bike is equipped with said mufflers, and both sides have developed some gnarly rattling. Easily heard under acceleration when installed on the bike, or if you shake it around in your hand.
I've got the whole system off the bike currently (pulled engine for another unrelated project) and I'm able to get a peek at what's going on in there. Pretty rusty, but it appears to be mostly surface rust; no really bad spots, or any rotted sections are visible. My viewing angel is looking down from where the muffler slips over the header pipe (so from 'front' towards the 'rear' orientation if they were installed); about halfway down the length of the muffler in the chamber where the connection from the header pipe opens up, there's a loose piece of metal just hangin' out, not secured or attached to anything.
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It's hard to really get a good look (a boroscope would be nice here) but as best I can discern, the loose piece is circular, fairly thin but almost as wide as the muffler itself, and looks to have flared edges. My assumption is that it's somehow meant to attach or sit on the piece below it (a metal grate with small, circular holes) which I assume is part of the filtering/baffle setup. I tried to fish it out with a extendable magnet tool, but it's far too wide to come out the header side intact. I removed the baffle/silencer that's bolted in to the the rear of the muffler and attempted to go in that way, but there's too many other internal pieces between the baffle end and the middle where the noisy culprit lives.
So, short of cutting these things open, I'm doubtful there's any way to remove or repair these pieces (whatever they may be). I tried to take some pictures to show here, but with a phone camera and that angle, I wasn't able to get a properly illuminated and focused image worth sharing.
I'd be thankful for any info or opinions here, whether it's to repair, replace, or rock em as is till they fall apart. I've looked around the web for something like a cross section or a picture of these mufflers being dissected, but haven't been able to find anything. I'm curious what these pieces are, and how the fit in to or might affect the rest of the exhaust system.
I'm fully aware these original Honda muffler sets aren't exactly survivors, and the rust+rot will eventually one day claim them. I'm hesitant to give up on anything 'original' that might have a chance to be saved. Also,for what it's worth, the exteriors are in pretty good shape, and with some elbow grease would clean up nice. Not perfect, but not complete garbage.
Thanks for looking, appreciate all/any replies. Have a good one!
Is anyone out there intimately familiar with these original Honda (HM317 stamped) mufflers, more specifically the interiors? I ask because this bike is equipped with said mufflers, and both sides have developed some gnarly rattling. Easily heard under acceleration when installed on the bike, or if you shake it around in your hand.
I've got the whole system off the bike currently (pulled engine for another unrelated project) and I'm able to get a peek at what's going on in there. Pretty rusty, but it appears to be mostly surface rust; no really bad spots, or any rotted sections are visible. My viewing angel is looking down from where the muffler slips over the header pipe (so from 'front' towards the 'rear' orientation if they were installed); about halfway down the length of the muffler in the chamber where the connection from the header pipe opens up, there's a loose piece of metal just hangin' out, not secured or attached to anything.
---
It's hard to really get a good look (a boroscope would be nice here) but as best I can discern, the loose piece is circular, fairly thin but almost as wide as the muffler itself, and looks to have flared edges. My assumption is that it's somehow meant to attach or sit on the piece below it (a metal grate with small, circular holes) which I assume is part of the filtering/baffle setup. I tried to fish it out with a extendable magnet tool, but it's far too wide to come out the header side intact. I removed the baffle/silencer that's bolted in to the the rear of the muffler and attempted to go in that way, but there's too many other internal pieces between the baffle end and the middle where the noisy culprit lives.
So, short of cutting these things open, I'm doubtful there's any way to remove or repair these pieces (whatever they may be). I tried to take some pictures to show here, but with a phone camera and that angle, I wasn't able to get a properly illuminated and focused image worth sharing.
I'd be thankful for any info or opinions here, whether it's to repair, replace, or rock em as is till they fall apart. I've looked around the web for something like a cross section or a picture of these mufflers being dissected, but haven't been able to find anything. I'm curious what these pieces are, and how the fit in to or might affect the rest of the exhaust system.
I'm fully aware these original Honda muffler sets aren't exactly survivors, and the rust+rot will eventually one day claim them. I'm hesitant to give up on anything 'original' that might have a chance to be saved. Also,for what it's worth, the exteriors are in pretty good shape, and with some elbow grease would clean up nice. Not perfect, but not complete garbage.
Thanks for looking, appreciate all/any replies. Have a good one!