SuzukiSavage.com - Another noob needs help

Welcome, Guest. Please Login or Register :: View Members

SuzukiSavage.com › General Category › Rubber Side Down! › Another noob needs help

(Moderators: verslagen1, Dave, Serowbot)

‹ Previous topic | Next topic ›

Pages: 1 2

Another noob needs help (Read 441 times)

Charon

Serious Thumper

Offline

Posts: 1811
Harvard, NE
Gender: male

Re: Another noob needs help
Reply #15 - 12/14/08 at 10:08:12

This might be a "devil's advocate" question, but I'll raise it. Most discussion of exhaust systems seems to center on reducing back pressure, or the requirement for a certain amount of back pressure. Almost by definition "back pressure" implies a pressure above atmospheric (ambient) pressure. How then can a leak in the exhaust system allow extra air INTO the exhaust system instead of allowing the pressurized (back pressure) OUT?

Eschew obfuscation.

IP Logged

verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: Another noob needs help Reply #16 - 12/14/08 at 10:18:20 Exhaust transits the pipe as a pressure wave. Resistance to that wave is back pressure. suddenly closing the throttle and dropping the velocity of that wave will cause it to go negative in between pulses.
Back to top	Versey's Place Tech Section Index IP Logged

Digger

Serious Thumper
2005 No Login

Offline

Ya gotta be tough to
ride singles!

Posts: 1604
Colorado Springs, CO
Gender: male

Re: Another noob needs help
Reply #17 - 12/14/08 at 18:21:11

Justin,

Sounds like you are at a stage where you need to eliminate some potential culprits.

Try crimping the petcock vacuum hose tightly enough so that NOTHING can get through it. Turn the petcock to PRI and try running the bike.

Does it run better? Worse? The same? Report back up.

Remember to turn the petcock to ON or RES before walking away from the bike.

Oh, and you may want to pop in a fresh plug before trying this test.

Good luck!

Digger
2001, Metallic Glacial Blue, Raptor Petcock, Verslavy (first hole) (otherwise, mechanically, the bike is stock), 13,xxx miles
I don't own a cage.
www.astronautbiker.com

IP Logged

Justinmkantor Full Member Offline SuzukiSavage.com Rocks! Posts: 117 Monterey, CA Gender:	Re: Another noob needs help Reply #18 - 12/15/08 at 13:44:53 Just replaced plug with iridium plug. Did Petcock mod now only has on/off/reserve switches but will try more clamps.
Back to top	IP Logged

Justinmkantor Full Member Offline SuzukiSavage.com Rocks! Posts: 117 Monterey, CA Gender:	Re: Another noob needs help Reply #19 - 12/31/08 at 15:20:55 Replaced the stock muffler with a dyna and backfire is more like a "poof" than a bang now. I used aluminum foil as a spacer for the metric-SAE gap. Anybody see anything wrong with that?
Back to top	IP Logged

T Mack 1 - FSO

Serious Thumper
Alliance Member

Offline

sold 2001 LS650 for
a 1986 XLH1100

Posts: 2919
Emmaus,Pa
Gender: male

Re: Another noob needs help
Reply #20 - 12/31/08 at 15:38:50

Justinmkantor wrote on 12/31/08 at 15:20:55:

Replaced the stock muffler with a dyna and backfire is more like a "poof" than a bang now. I used aluminum foil as a spacer for the metric-SAE gap. Anybody see anything wrong with that?

The aluminum foil will eventually flake apart, bt it will take awhile. But.... should be good for now.

When it comes time to replace it, use a slightly thicker gauge aluminum .

Engineers design things, Technicians make them work.
---
30% of being mechanical is confidence/30% is knowing to go slow when needed/30% is looking repeatedly at what you have/10% is dumb luck Wink

IP Logged

justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Another noob needs help Reply #21 - 12/31/08 at 20:33:11 Coke/beer can might handle the job.
Back to top	The people never give up their liberties but under some delusion.- Edmund Burke. IP Logged

Pages: 1 2

‹ Previous topic | Next topic ›

« Home