Q: Exhaust size and Cut-off valve

[cobrAA]

Im pretty sure the amount of rattling directly corresponds to the size of the valve...mine is 4"...rattles horribly. A tiny little 2" one, like in your muffler wouldnt have as much of an issue due to the much smaller surface area...and its in the muffler so that is hiding alot of it. I have nothing but pipe so the noise would be amplified. I may try and put a bigger O-ring into the seat and see if that helps.


Jon.

...or get a doug cutout ? :P haha

[Dragon Humper]

I would have done that from the begining but...they dont make a 4". I might ditch the whole thing all together and do a muffler at the tail with a resonance tube to kill the drone.


Jon.