Anyone shorty a mufler?

derf · 06-18-2009, 01:34 AM

http://www.youtube.com/watch?v=pUqlPeObR74

I've been contemplating cutting down my muffler a little, along the lines of what is in the video here. Anyone have experience doing this? It doesn't look hard at all, but I really dont want to mess up my can.

Amber Lamps · 06-18-2009, 01:42 AM

Quote:

Originally Posted by derf

http://www.youtube.com/watch?v=pUqlPeObR74

I've been contemplating cutting down my muffler a little, along the lines of what is in the video here. Anyone have experience doing this? It doesn't look hard at all, but I really dont want to mess up my can.

A drill, a sawzall and a rivet gun. 1 hour tops.

BobTheBiker · 06-18-2009, 01:44 AM

I had a shorty D&D on my old hurricane. trust me, dont. it goes from a nice mellow tone to ABSURDLY obnoxious.

Dave · 06-18-2009, 02:11 AM

might the loss in pipe length kill off some torque as well?

Amber Lamps · 06-18-2009, 02:33 AM

Quote:

Originally Posted by Dave

might the loss in pipe length kill off some torque as well?

It'll definitely lose some back pressure, which will hurt your mid range for sure! No offense but that bike wasn't exactly known for it's midrange... I'd probably leave it alone.

Rangerscott · 06-20-2009, 11:53 AM

I serously doubt shortening the can that much will hurt back pressure since most of it is made with the size/bends of the headers.

I would repack the can. Two bro's sells a kit for 20 bones.

Tmall · 06-21-2009, 08:31 AM

Its simple really. Any kind of pipe or hose has an internal resistance to flow.

The longer it is, the higher the resistance.

A shorter path would produce less back pressure unless you throw some bends to compensate, or as some people do throw an adjustable baffle in the exhaust path. Then you can adjust the flow restriction accordingly. (this is usually a washer on the end of a bolt threaded into the headed or midpipe)

marko138 · 06-23-2009, 04:37 PM

Quote:

Originally Posted by Tmall

Its simple really. Any kind of pipe or hose has an internal resistance to flow.

The longer it is, the higher the resistance.

A shorter path would produce less back pressure unless you throw some bends to compensate, or as some people do throw an adjustable baffle in the exhaust path. Then you can adjust the flow restriction accordingly. (this is usually a washer on the end of a bolt threaded into the headed or midpipe)

You a smart motherfucker.

06-18-2009, 01:34 AM	#1
derf token jewboy Join Date: Nov 2008 Moto: CBR 900, KLR ugly ass duckling, Gas Man Posts: 10,799	Anyone shorty a mufler? http://www.youtube.com/watch?v=pUqlPeObR74 I've been contemplating cutting down my muffler a little, along the lines of what is in the video here. Anyone have experience doing this? It doesn't look hard at all, but I really dont want to mess up my can. __________________

06-18-2009, 02:11 AM	#4
Dave Chaotic Neutral Join Date: Feb 2008 Location: Cherry Hill NJ Moto: GV1200 Madura, Hawk gt Posts: 13,992	might the loss in pipe length kill off some torque as well? __________________ TWF Post whore #6

06-18-2009, 01:44 AM	#3
BobTheBiker too much time on my hands Join Date: Jul 2008 Location: the northern district of god damn Moto: 01 ZX6R, looking for more now. Posts: 1,802	I had a shorty D&D on my old hurricane. trust me, dont. it goes from a nice mellow tone to ABSURDLY obnoxious.

06-20-2009, 11:53 AM	#6
Rangerscott Viff6N Mutated Warrior Join Date: Mar 2009 Location: Texas Moto: '01 Honda VFR 800 & '09 ER-6N Posts: 8,704	I serously doubt shortening the can that much will hurt back pressure since most of it is made with the size/bends of the headers. I would repack the can. Two bro's sells a kit for 20 bones.

06-21-2009, 08:31 AM	#7
Tmall Aspiring Rapper Join Date: Nov 2008 Location: Halifax, NS Moto: '12 CB1000R Posts: 3,569	Its simple really. Any kind of pipe or hose has an internal resistance to flow. The longer it is, the higher the resistance. A shorter path would produce less back pressure unless you throw some bends to compensate, or as some people do throw an adjustable baffle in the exhaust path. Then you can adjust the flow restriction accordingly. (this is usually a washer on the end of a bolt threaded into the headed or midpipe)