20-06-12, 09:21 AM
I've had occasion to open up a couple of OE silencers and found them to have two or three chambers with a number of 1" tubes as interconnectors. I've not dismantled an original Fazer exhaust though, so will be interested to hear what you find.
Other than the one on a little Yamaha 2-stroke I used for a while, the only silencers I've seen that employ a central perforated tube surrounded by an absorbent wadding have been after-market ones.
I suspect that the noise and heat that glass fibre wadding is subjected to causes it to slowly disintegrate and blow out with the exhaust gases anyway.
Other than the one on a little Yamaha 2-stroke I used for a while, the only silencers I've seen that employ a central perforated tube surrounded by an absorbent wadding have been after-market ones.
I suspect that the noise and heat that glass fibre wadding is subjected to causes it to slowly disintegrate and blow out with the exhaust gases anyway.