Topic: will this muffler work? cb400f

[kajtek]

the muffler on my stock system has rotted on the inside and out, tried to cut away all the bad metal and ended up with a very big hole! so id like to replace it.. to buy a repro its about 90quid but i found this:

http://www.classicbikeshop.co.uk/44mm-38mm-SHORT-MEGAPHONE_ARMM2.aspx

which i like the look of, also the price helps...! any opinions before i get one? it will be fitted to the stock headers. i would prefer not to go through any jetting as money is tight and cant really afford to but lots of jets to see what works, so if anyone has fitted the same or similar would be great to know if it affected tuning negatively.

thanks for any help

ashley

[Bodi]

I haven't found a reliable size spec for the header outlet pipe, but it may be 1 3/4" or 44.5mm. If so then this muffler would fit on the pipe at least. I don't like the reducing sleeves: the junction looks odd with the muffler inlet much larger than the header pipe and the sleeves always leak a bit, causing an slight odd noise when running and a carbon smudge where exhaust blows out onto the header. This looks like it should fit without a sleeve, good.
As far as back pressure and jetting... you don't know until you try it. My experience is that switching to a universal type muffler makes no difference but your result may differ.

[kajtek]

cool, thank you for all the info, i will go measure my collector outlet to make sure it matches the size that doesnt need a collar.

ashley

[KingCustomCycles.com]

A muffler shop can make you an adapter for any pipe to any muffler.  They use expansion tools to size the pipe.  I usually end up with about a 5 inch long piece when I have cut it down and everything fits nice and tidy. I have had them do it for free.