Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post

beatr911 · 10-22-2009, 06:06 PM

To get good data on exhaust pipe length use one of the calculators.
Here's one: Exhaust Length,exhaust pipe,induction
And another: http://dairally.net/daihard/chas/Mis...s/DaiPipes.htm
Read ALL about it with this book: http://www.bentleypublishers.com/aut...ry-1483-2.html

For your engine and the RPM you want, it's gonna be pretty darn long.

If you cut the calculated length in half you'll get somewhat less of the same effect due to friction as the pulse travels back and forth twice, but it helps for compact packaging.

Take a look at a GS500 or Ninja 500/250 to see what they do for the crossover.

10-22-2009, 06:06 PM	#13 (permalink)
beatr911 Master EcoModder Join Date: Feb 2008 Location: Olympia, WA Posts: 285 B2300 - '96 B2300 SE Big Red - '88 Concours ZG1000 90 day: 54.41 mpg (US) Zongshen Sierra 200 - '06 Sierra 200 Supermoto 90 day: 82.11 mpg (US) Thanks: 1 Thanked 23 Times in 19 Posts	To get good data on exhaust pipe length use one of the calculators. Here's one: Exhaust Length,exhaust pipe,induction And another: http://dairally.net/daihard/chas/Mis...s/DaiPipes.htm Read ALL about it with this book: http://www.bentleypublishers.com/aut...ry-1483-2.html For your engine and the RPM you want, it's gonna be pretty darn long. If you cut the calculated length in half you'll get somewhat less of the same effect due to friction as the pulse travels back and forth twice, but it helps for compact packaging. Take a look at a GS500 or Ninja 500/250 to see what they do for the crossover. Last edited by beatr911; 10-22-2009 at 06:19 PM..