Mercury Snowmobiles Discussion Board

No back pressure on a 2 stroke. Anything outside the stinger cone is for sound supression. I have some Yamaha GPX pipes with the outer cylinders cut off the ends. It is pretty much a modification done for weight saving and does make the sound go up quite a bit.

Thanks for the input, Scott! That pretty much mimics what people say about the 340 Exciter. Dad had a 440 T/T but he was quick to say that the 340 was "almost just as fast". I could tell by the look on his face that he wasn't lying either. I think he wants me to get a Twister either way.

B9 ES over the recommended surface gap plugs? Dad had a 440 T/T and he used NGK BUE which barely ever fouled after idling and I guess that was the best thing about them so he says. I have 2 L/C Rupps that use the same plug.

What can be expected of a 340 T/T compared to a 440? I was looking at quite a few of them, 340's and a 440. Now I am kind of stumped.
I have a 340 Yamaha Exciter and was thinking maybe it would be better to get something in the same class.