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Muffler Repacking

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MattWadz
Trackday Trickster



Joined: 08 Apr 2011
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PostPosted: 17:15 - 30 Apr 2014    Post subject: Muffler Repacking Reply with quote
Just a quick question on 2 stroke Muffler repacking, my Exhaust has got gradually louder (not blowing) its a Pro Circuit End can and it can be taken apart to be repacked so

Does the way you repack the can make any difference to performance or volume

or do you just stuff it as full as possible, thats what ive always done, any ideas anyone?

Thanks

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bladerunner
World Chat Champion



Joined: 09 Sep 2006
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PostPosted: 11:21 - 01 May 2014    Post subject: Reply with quote
https://www.ebay.co.uk/itm/MOTORCYCLE-EXHAUST-END-CAN-WADDING-Silencer-Packing-450-x-800-/251486706276


This stuff is much easier...most guys use it these days rather than loose wool.....local MX supplier put me onto it after asking for loose wool packing....he had both at the same price but said this stuff is much better....he was right and it lasts longer and gives more consistent results .......if your using loose stuff then just try and pack it down evenly !
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Matt B
World Chat Champion



Joined: 01 May 2012
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PostPosted: 11:46 - 01 May 2014    Post subject: Reply with quote
bladerunner wrote:
https://www.ebay.co.uk/itm/MOTORCYCLE-EXHAUST-END-CAN-WADDING-Silencer-Packing-450-x-800-/251486706276


This stuff is much easier...most guys use it these days rather than loose wool.....local MX supplier put me onto it after asking for loose wool packing....he had both at the same price but said this stuff is much better....he was right and it lasts longer and gives more consistent results .......if your using loose stuff then just try and pack it down evenly !


That's interesting stuff.

Other sellers are showing similar packing sheets that are:

"stitched together with a fine low temperature melting thread which dissolves on contact with exhaust gas, releasing the compressed fibres to expand and fully fill chamber voids. Ideally suited for repacking non-uniform shaped cans such as oval and tri-oval, which can be tricky to repack correctly with standard materials"

https://www.ebay.co.uk/itm/Motocross-Enduro-Trackday-Expanding-Race-can-Silencer-Exhaust-Packing-350mm-x-1m-/150910520277

I wonder if they are all designed to expand and fill the space like that? Either way it would make the job a lot easier.
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MattWadz
Trackday Trickster



Joined: 08 Apr 2011
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PostPosted: 16:33 - 01 May 2014    Post subject: Reply with quote
wow, pretty cool stuff i ususally use this Muffler Packing stuff thats like glasswool/rockwool?

il go and give the glasswool stuff a try now
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Pitbike x2, Mini Moto x4, China Quad, 02' Suzuki AP50 > 03' MBK Nitro > 86' Suzuki GP100 > 02' Yamaha Jog R > 57' Honda Lead 100 > 95' Piaggio ZIP Rst 50 > 51' Suzuki TS50x > 83' Honda CB125TDE Twin > 51' Yamaha Aerox > 98' Kawasaki KX60 > 89' Yamaha DT50MX > 80's Honda QR50 > 05' CG clone > 125cc China Pitbike > 91' Honda MTX125 RW-L > 09' Peugeot Speedfight 2 LC LR > Lucky MX 140cc > Apache Tomahawk 50 Quad (current = 2010 Yamaha WR125R
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