aliveagain
Needs a life
Posts: 5033
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posted February 19, 2003 07:17 PM
pipe diameters
currently running a D&D slip-on and was wondering if I could just buy the tubes and collector, reuse the slip-on.Are the after market pipes the same diameter as stock?What is the difference in canisters?
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I wondered why the baseball kept getting bigger. Then it hit me.
  
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Zhooligan
Moderator
Post Whore Extraordinaire!
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posted February 19, 2003 08:01 PM
The aftermarket pipes all tend to differ. Some use a small head pipe that expands to a larger dia. , some use cones in the process somewhere along the line to speed up the flow etc. Doug obvious could better explain the science. Big Giant header pipes usually result in horsepower but the low and mid range are hurt. Thus comes the science to figure out how to get the best all worlds.
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To those who do not count their life in years, but in how life
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future; -- Youth is forever.
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oldkawboy
Needs a job
Posts: 2125
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posted February 20, 2003 05:46 AM
I've experimented around with different cannisters on my Akro, they varied over .5" diameter outlet. On my bike there was no hp or tq increase/decrease on the dyno and no difference on top speed runs.
Once again, this is not the headpipes, only cannisters.
Dan
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aliveagain
Needs a life
Posts: 5033
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posted February 20, 2003 04:11 PM
I guess being married with children I was just looking for a cheaper way.
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I wondered why the baseball kept getting bigger. Then it hit me.
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BA
Pro
Posts: 1592
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posted February 21, 2003 08:08 PM
that's good to know Dan!
I was going to do the same! 
looks like ya beat me to it.
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oldkawboy
Needs a job
Posts: 2125
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posted February 22, 2003 04:53 AM
It seemed so simple to me (simple mind) that a larger diameter outlet would be better for top end power, but it did not prove that way to me.
Seems strange that my sons R1 Akro pipe had a .5" larger outlet, I kinda figured a larger displacement engine would use a larger exhaust. I guess Akropovic know more than me :-)
Dan
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Hells Dark Lord
Needs a life
living life, and loving it.
Posts: 7981
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posted February 22, 2003 08:05 AM
got a buddy that is running a Muzzy header, and had a Micron can "fit" to the header, it works great, got good midrange and great topend....got better topend according the the seat of the pants dyno than the full Muzzy has...
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When in doubt, lean farther and go faster....
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