Author Topic: Exhaust pipe changes....  (Read 1377 times)

FL670R

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Exhaust pipe changes....
« on: April 28, 2006, 02:08:43 PM »
Alright all you GURU's.....

How can/should I Plug the twin pipe stingers and run the pipe exits out of the rear baffle cones ?

some history:
The FL670 Has custom dual exhaust pipes but I need to fab up some kind of quiet silencer...

Been reading about 2-stroke pipes - man they are complex...

I'm thinking about capping the ends and putting a "T" between the pipes going to a MBPR canister silencer....

Some newer sleds do this and I want to keep the exhaust all within the frame of the pilot
Currently my pipes are so long that they end at back of Frame leaving the silencer out in the open - YICK....

See Picts....

I could shorten the dwell on the pipes some but this would change the powerband - don't really want to do that...

I believe if I make the exits in the baffle cone I shouldn't be changing the dynamics of the pipes much - Am I correct ?

Any advise or recommendations out there ???????

PS
The ulgy homemade gas tank has been replaced with a spun aluminum so I have lots of room for the new exhaust plumbing...

ludedude

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Exhaust pipe changes....
« Reply #1 on: April 28, 2006, 04:40:25 PM »
Quote
I believe if I make the exits in the baffle cone I shouldn't be changing the dynamics of the pipes much - Am I correct ?


I believe that's correct. The waves don't care where they exit.

Would you have to cut into the cone in order to turn 90? and put silencers parallel to the rear, inside the rear bar? Can you change one pipe slightly so that it is higher or lower than the other? So that the silencers lay one on top of the other in opposing directions?

PilotHawK

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Exhaust pipe changes....
« Reply #2 on: April 28, 2006, 07:14:15 PM »
Dennis I have a pipe that looks exactly like what you need to do. I'll get pics of it either later tonight or tomorrow sometime for you.

Basically the pipe has no rear stinger and has a "center" bleed stinger on it. I believe that if you were careful and removed the current stingers, or cut them off after measuring them, then capped the holes where the stinger were, you could attach stingers in somewhere in the middle of the expansion chamber. After you did that, you could either run your current silencer, or depending on how your stingers are spaced, you could run a single silencer for each pipe.


Pics to follow soon.