Can you explain more on this? I have a 700rmk and I have a very very long pipe going from my expansion chamber to my muffler/can/silencer. Whatever you want to call it. Its always had a bad bog. But this exact same exhaust set up on a ski doo has zero bog... Im wondering if the polaris engines hate that much extra pipe.Got her nice and cleaned up!
You might want to revise that can setup. The extra long stinger might cause a big bog
Oh I defiantly am trying to use the same pipe on two different brands but thats the only option I have. Its in a snowhawk. Its a non ves 700 with a pipe set up made for a 600ho rotax. Wide open it screams but never had the bottom end response the 600s had. I was think lack of powervalves plus that 3ft of pipe thats ran down to the muffler could be the issue.When you say exact same pipe between a Polaris and a skidoo it has me curious. You aren't trying to use the same pipe on two different brands I wouldn't think.
Either way, a tuned pipes final tuning is in the stinger. It is based on length into the expansion chamber and overall diameter. There were old pipe sets that had adjustable stingers that the end user could fine tune for altitude or temp or fuel or whatever.
When the pipes are made they come tuned. Tuned for a specific make and model. Any change to the stinger length changes the tuning.
With any exhaust, the idea is to get the hot gasses out as fast as possible while retaining the appropriate back pressure. The long stinger probably creates excessive pressure.
I'll end this with, I think
I have no plans of getting rid of any parts as stuff for the m-10 and cmx sleds are getting hard to find.Great revival! I loved those sleds but always wondered why Mark would keep that big ole dashboard on his sleds when most didn't even have the gauge mounted in them. I love it nonetheless. What are you doing with the old shocks and springs?