Will bike run good without an exhaust?

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Will bike run good without an exhaust?

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Will bike run good without an exhaust? - 5/3/2008 9:51:14 AM

A4wheelin

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I'm tired of looking at the ugly stock can on my bike. I also want a louder exhaust sound but I can't afford a slip on right now. :( What would happen if I just took my can off and ran the bike like that?

< Message edited by A4wheelin -- 5/4/2008 4:30:51 PM >

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RE: Will bike run good without a can? - 5/3/2008 9:54:36 AM

rvizzle

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I don't think that's even legal.. Dunno might depend on state laws.

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RE: Will bike run good without a can? - 5/3/2008 10:12:36 AM

SpiritRR

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Hell, I saved 14 pounds by ditching the entire exhaust. I mean, yeah, it's a little loud...185dB, and my exhaust valve timing is way off, but I duct-taped some chicken wire onto the open ports to keep the sugar gliders out, and now it only stutters most of the time. Then all I had to do was put tin foil around the front wheel, the forks, the fender, the upper cowl, and the radiator (whew, hot!), so the fumes won't turn them all black. I swear, mufflers and especially header pipes are just another way for big corporations to keep the little guy down. Live free or die!

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RE: Will bike run good without a can? - 5/3/2008 10:13:20 AM

Shadow1

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Exhausts are designed to run at a specific length (tuned length) - You'd probably burn valves.....not a good thing.

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RE: Will bike run good without a can? - 5/3/2008 10:18:12 AM

A4wheelin

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quote:

ORIGINAL: Shadow1

Exhausts are designed to run at a specific length (tuned length) - You'd probably burn valves.....not a good thing.

Really? Why, how? I don't know shit about this kind of stuff.

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RE: Will bike run good without a can? - 5/3/2008 10:26:12 AM

Shadow1

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From: Pinetown, South Africa
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All engines are designed to run with a certain amount of back pressure - the trick is to get the pipe to the point where it goes blue, then cut it off 1/2 inch before the bluing (or is it after) - problem on a bike is, you'd need a looong pipe that would stick out way behind the rear fender.
GP bikes don't use silencers, and run at 130 odd decibels, but they have specially designed systems.
You'll burn valves, insufficient back pressure. - I wouldn't do it - rather find a cheap can built for a bike of your bike's cc, and fit that - much cheaper, and may give you the sound you want, without endangering your engine.My 2c worth

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RE: Will bike run good without a can? - 5/3/2008 10:35:10 AM

A4wheelin

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quote:

ORIGINAL: Shadow1

All engines are designed to run with a certain amount of back pressure - the trick is to get the pipe to the point where it goes blue, then cut it off 1/2 inch before the bluing (or is it after) - problem on a bike is, you'd need a looong pipe that would stick out way behind the rear fender.
GP bikes don't use silencers, and run at 130 odd decibels, but they have specially designed systems.
You'll burn valves, insufficient back pressure. - I wouldn't do it - rather find a cheap can built for a bike of your bike's cc, and fit that - much cheaper, and may give you the sound you want, without endangering your engine.My 2c worth

Thanks for the info man.

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RE: Will bike run good without a can? - 5/3/2008 11:49:57 AM

HAVOC

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in short dont do it

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RE: Will bike run good without a can? - 5/3/2008 11:52:24 AM

jdschmidt

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i rode mine for a little while when i was waiting for the stock exhaust to get here.. it was soo loud..just drill some holes in the mid pipe of your stock one or something..dont know how it would sound..but it should def. change the tone.

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RE: Will bike run good without a can? - 5/3/2008 11:53:30 AM

PlayfulGod

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quote:

ORIGINAL: HAVOC

in short dont do it

+1

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RE: Will bike run good without a can? - 5/3/2008 12:32:42 PM

N8 Dawg

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From: Middletown OH
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quote:

ORIGINAL: Shadow1

All engines are designed to run with a certain amount of back pressure - the trick is to get the pipe to the point where it goes blue, then cut it off 1/2 inch before the bluing (or is it after) - problem on a bike is, you'd need a looong pipe that would stick out way behind the rear fender.
GP bikes don't use silencers, and run at 130 odd decibels, but they have specially designed systems.
You'll burn valves, insufficient back pressure. - I wouldn't do it - rather find a cheap can built for a bike of your bike's cc, and fit that - much cheaper, and may give you the sound you want, without endangering your engine.My 2c worth

ya, what he said

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RE: Will bike run good without a can? - 5/3/2008 1:38:27 PM

A4wheelin

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WOW just took the can off and OMG!!! I wasn't expecting it to be that loud!

It sounds like a freakin motogp bike now! I let it idle for a minute and then reved it and almost popped my damn eardrum lol! Hmm... it may be too loud for the street. And probably way too loud for my 25 mile commute to work. Damn I need a slip-on. I hate money, why do we need money for things. Ugh!

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RE: Will bike run good without a can? - 5/4/2008 4:19:22 PM

A4wheelin

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Went for a quick 5 minute ride with the can off. I had to see how it sounded while riding. We get alot of Harley riders riding past the house in my neighborhood. Well I asked my girlfriend how loud it was and she said it was "WAY louder than those Harley riders". Hmm.... Too loud then I suppose. Sounded great in my helmet with earplugs in. ;)

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RE: Will bike run good without a can? - 5/4/2008 7:28:06 PM

shoortbuss

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From: Pittsburgh, PA
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quote:

ORIGINAL: SpiritRR

Hell, I saved 14 pounds by ditching the entire exhaust. I mean, yeah, it's a little loud...185dB, and my exhaust valve timing is way off, but I duct-taped some chicken wire onto the open ports to keep the sugar gliders out, and now it only stutters most of the time. Then all I had to do was put tin foil around the front wheel, the forks, the fender, the upper cowl, and the radiator (whew, hot!), so the fumes won't turn them all black. I swear, mufflers and especially header pipes are just another way for big corporations to keep the little guy down. Live free or die!

LMAO

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RE: Will bike run good without a can? - 5/5/2008 3:28:58 AM

fishfryer527

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From: Indian Harbor Beach, Florida
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quote:

just drill some holes in the mid pipe of your stock one

This is a proven technique...

j/k

it reminds me of how they used to drill holes into the heads of crazy people to let the demons out.

a4-just get a little racing nub muffler to attach to your collector, it will be small and still too loud, but it may give you a little backpressure. There is an KZ750 running around here with that setup and it may be what you are looking for:

Something like this may be just stupid enough to work. It is for a twostroke, but....

http://www.jcwhitney.com/2-CYCLE-MOTORCYCLE-SILENCERS/GP_2006238_N_111+10211+600014675_10111.jcw

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