Quieter exhaust

SabreValkyrn · October 27th, 2012, 08:56 PM

I've seen a lot of threads in the 08-12 section for exhaust, but haven't found much for pregens.

Most of my riding is in town, so I keep my revs high for nimbleness... but it's loud and whiny. I don't want to ride with earplugs because hearing things seems useful.

I've looked at the Area P exhaust with quiet core and it seems awesome, but discontinued. Is it possible to get a 2-1 header/pipes and use the stock can? Is there a point?

Would 2-1 stock can be louder than 2? Seems like more would be going through one can so it would be louder overall.

I'm a starving college student wanting to reduce the high pitch ... whining the stock exhaust makes. Any ideas are appreciated.

cuong-nutz · October 27th, 2012, 10:28 PM

Quote:

Originally Posted by SabreValkyrn

I've seen a lot of threads in the 08-12 section for exhaust, but haven't found much for pregens.

Most of my riding is in town, so I keep my revs high for nimbleness... but it's loud and whiny. I don't want to ride with earplugs because hearing things seems useful.

I've looked at the Area P exhaust with quiet core and it seems awesome, but discontinued. Is it possible to get a 2-1 header/pipes and use the stock can? Is there a point?

Would 2-1 stock can be louder than 2? Seems like more would be going through one can so it would be louder overall.

I'm a starving college student wanting to reduce the high pitch ... whining the stock exhaust makes. Any ideas are appreciated.

You could always try and gut the stock cans.

Alex · October 27th, 2012, 10:33 PM

No info on exhausts for the pre-gens. But, for this:

Quote:

Originally Posted by SabreValkyrn

I don't want to ride with earplugs because hearing things seems useful.

Earplugs don't mute the world. You can still hear anything and everything useful to riding the bike, including other cars, sirens, the engine, etc. It just turns the volume of the wind noise down. Your future self will thank you.

Trailerboy531 · October 27th, 2012, 11:13 PM

You want a quiet exhaust.......than stock?

I'm confused.

SabreValkyrn · October 27th, 2012, 11:40 PM

Thank you for the earplug comment, I'll definitely ride with them on my freeway trips.

Gutting the stock cans would take of a lot of weight and make the bike sound like a lawn mower from what I've read.

Quieter but doesn't sound like a lawn mower, is that possible? I liked the quieter bassiness of the Area P Quiet Core, but that doesn't seem to be an option anymore.

Quote:

Originally Posted by Trailerboy531

You want a quiet exhaust.......than stock?

I'm confused.

I like all of my hardware to run as cool, efficiently, and quietly as possible. Carries over from my software engineer profession I guess. Loud bikes do sound -awesome-, but my girl's a commuter and I'd like her to be quieter

I also believe loud pipes are just loud and don't really do much for safety.

Trailerboy531 · October 27th, 2012, 11:58 PM

Honestly......You can't get more quiet than stock... Get a scooter? lol Or a zero S electric motorcycle!!!

SabreValkyrn · October 28th, 2012, 12:02 AM

I was merely curious if it was possible, almost every aftermarket exhaust is louder, and understandably so.

Quote:

Originally Posted by Trailerboy531

Get a scooter? lol Or a zero S electric motorcycle!!!

That's just insulting. :P

choneofakind · October 28th, 2012, 12:03 AM

Earplugs mute the low throbbing of the wind noise, but things like horns, sirens, and engines are still readily audible. Try those out and see how it goes.

Stock exhaust cans are definitely the quietest things available.

Trailerboy531 · October 28th, 2012, 12:33 AM

Quote:

Originally Posted by SabreValkyrn

I was merely curious if it was possible, almost every aftermarket exhaust is louder, and understandably so.

That's just insulting. :P

The Zero S is badass!!! That thing is zippy as hell and you can slide it all over the place. I'd freakin' love one!

Jiggles · October 28th, 2012, 01:15 AM

Quote:

Originally Posted by SabreValkyrn

I also believe loud pipes are just loud and don't really do much for safety.

Smart man.

SabreValkyrn · October 28th, 2012, 01:18 AM

I also wear full gear, even when it was 80F+ out. I was ... significantly warmer than I desired, but I'm pretty sure 40mph asphalt is a lot more harmful to the skin than the sun is.

Thank, everyone, for your responses; ninjette.org has once again been very helpful.

Jiggles · October 28th, 2012, 01:31 AM

Now you just gotta add earplugs to that mix. Or you can be like me and bank on revolutionary advances in hearing aides in the next 40 years

thumper64 · October 31st, 2012, 10:00 PM

Just take out the resonator tip thing out from the stock cans. Not as loud as an Area P exhaust, and sounds kinda cool, doesn't sound as much like a scooter. It didnt remove much as far as weight though...but it was cheaper than trying to cut and modify an 08 exhaust.

If I have this right, the 2 to 1 should improve scavenging and low end power but slightly rob the top end. The 2 straight pipes with crossover should be better for top end but low end isn't as good. Keeping the diameter of the pipe small should retain good exhaust velocity on the low end, and as long as it's large enough, support the power of the engine. If you get it too large, it can hurt exhaust velocity on the low end but allow more flow up top.

I also agree, loud is just loud and obnoxious. Being seen is going to do more good than being heard, but opening up the exhaust seemed to give a bit better throttle response and it was running worse unless I put the choke on, so I had to change jets just from that without even putting my Uni pods on, so it must be breathing more.

choneofakind · November 1st, 2012, 06:22 AM

Quote:

Originally Posted by thumper64

If I have this right, the 2 to 1 should improve scavenging and low end power but slightly rob the top end. The 2 straight pipes with crossover should be better for top end but low end isn't as good. Keeping the diameter of the pipe small should retain good exhaust velocity on the low end, and as long as it's large enough, support the power of the engine. If you get it too large, it can hurt exhaust velocity on the low end but allow more flow up top.

I have no idea about the science behind exhaust pipes, but my experience tells me that a full 2-1 Muzzy significantly outperforms oem headers with slip-ons at the mid-range and top end.

thumper64 · November 1st, 2012, 07:23 PM

Quote:

Originally Posted by choneofakind

I have no idea about the science behind exhaust pipes, but my experience tells me that a full 2-1 Muzzy significantly outperforms oem headers with slip-ons at the mid-range and top end.

Mid should certainly with a 2 to 1. I have no doubt about that, the stock pipes look kinda small.
By chance, would you know the inside diameter of the muzzy or area p system? I've got access to a welder

choneofakind · November 1st, 2012, 09:33 PM

It's better all around. It's a great system.

The earliest I'll be able to take measurements for you is the week of thanksgiving since I'm at school without my ninjette. I'm pretty sure the diameter of the can and the mid-pipe is 2" though. If you wanted to keep the total area of the mid-pipe the same as the combined area of the individual headers, this means the headers would have to be 1.4" diameter each. That sounds about right from my mental picture of my exhaust system.

Area P's standard can is 2" ID and their QC can is 1.75" ID. I'm not sure about the diameter of the rest of the system.
More info here: http://areapnolimits.com/products/Sl...Ninja-1988.php

thumper64 · November 3rd, 2012, 01:08 PM

I agree, just I'm kinda trying to keep this bike sorta cheap since it's my first.

Yesterday I got to measure Rabies' exhaust, and it was 1.375" before the merge collector, and looked like it got bigger after.

choneofakind · November 3rd, 2012, 01:55 PM

That sounds about the same as mine. I'm 95% sure that the merge collector is 2", which means the individual sides before that have to be a maximum of 1.41" diameter to keep the pressure the same through the mid-pipe.

Go for it!! do 1.375" headers, a 2" collector, and then an 18" can with a 2" core. You've basically pieced together a Muzzy/Area P exhaust at that point.

Check out this thread. Zaydoc hasn't been on in a while, but the thread has some relevant pictures/info in it.
http://www.ninjette.org/forums/showthread.php?t=96907

October 27th, 2012, 08:56 PM	#1
SabreValkyrn ninjette.org member Name: Joel Location: Bellingham, wa Join Date: Mar 2012 Motorcycle(s): 2017 Motus MSTR (Kara), 1990 Ninja 600R (ZX600C3) (Scrappy) Posts: 185	Quieter exhaust I've seen a lot of threads in the 08-12 section for exhaust, but haven't found much for pregens. Most of my riding is in town, so I keep my revs high for nimbleness... but it's loud and whiny. I don't want to ride with earplugs because hearing things seems useful. I've looked at the Area P exhaust with quiet core and it seems awesome, but discontinued. Is it possible to get a 2-1 header/pipes and use the stock can? Is there a point? Would 2-1 stock can be louder than 2? Seems like more would be going through one can so it would be louder overall. I'm a starving college student wanting to reduce the high pitch ... whining the stock exhaust makes. Any ideas are appreciated.

October 28th, 2012, 01:31 AM	#12
Jiggles Jigglin' your Jiglets Name: Sean Location: San Jose, Ca Join Date: Jun 2011 Motorcycle(s): 2009 K1300S, 2013 Ninja 300, 2011 Ninja 250R, Faster than Unregistered's ninjette Posts: Too much. Blog Entries: 1 MOTM - Apr '13	Now you just gotta add earplugs to that mix. Or you can be like me and bank on revolutionary advances in hearing aides in the next 40 years __________________________________________________ If the Ninja 250 doesn't have enough power for you, then you don't know how to ride it. AFM #676 Supersports are for n00bs

October 31st, 2012, 10:00 PM	#13
thumper64 ninjette.org member Name: Tim Location: Quad Cities Join Date: Sep 2012 Motorcycle(s): Ninja 250 Posts: 102	Just take out the resonator tip thing out from the stock cans. Not as loud as an Area P exhaust, and sounds kinda cool, doesn't sound as much like a scooter. It didnt remove much as far as weight though...but it was cheaper than trying to cut and modify an 08 exhaust. If I have this right, the 2 to 1 should improve scavenging and low end power but slightly rob the top end. The 2 straight pipes with crossover should be better for top end but low end isn't as good. Keeping the diameter of the pipe small should retain good exhaust velocity on the low end, and as long as it's large enough, support the power of the engine. If you get it too large, it can hurt exhaust velocity on the low end but allow more flow up top. I also agree, loud is just loud and obnoxious. Being seen is going to do more good than being heard, but opening up the exhaust seemed to give a bit better throttle response and it was running worse unless I put the choke on, so I had to change jets just from that without even putting my Uni pods on, so it must be breathing more. __________________________________________________ Motorcycle noob, feel free to ignore me.

November 3rd, 2012, 01:08 PM	#17
thumper64 ninjette.org member Name: Tim Location: Quad Cities Join Date: Sep 2012 Motorcycle(s): Ninja 250 Posts: 102	I agree, just I'm kinda trying to keep this bike sorta cheap since it's my first. Yesterday I got to measure Rabies' exhaust, and it was 1.375" before the merge collector, and looked like it got bigger after. __________________________________________________ Motorcycle noob, feel free to ignore me.

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October 27th, 2012, 11:13 PM	#4
Trailerboy531 Gear crash test dummy Name: Max Location: South Bay (So. Cal) Join Date: May 2011 Motorcycle(s): 2010 Ninja 250 race bike, 2014 ZX-636r Posts: A lot.	You want a quiet exhaust.......than stock? I'm confused.

October 27th, 2012, 11:58 PM	#6
Trailerboy531 Gear crash test dummy Name: Max Location: South Bay (So. Cal) Join Date: May 2011 Motorcycle(s): 2010 Ninja 250 race bike, 2014 ZX-636r Posts: A lot.	Honestly......You can't get more quiet than stock... Get a scooter? lol Or a zero S electric motorcycle!!!

October 28th, 2012, 12:03 AM	#8
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	Earplugs mute the low throbbing of the wind noise, but things like horns, sirens, and engines are still readily audible. Try those out and see how it goes. Stock exhaust cans are definitely the quietest things available.

October 28th, 2012, 01:18 AM	#11
SabreValkyrn ninjette.org member Name: Joel Location: Bellingham, wa Join Date: Mar 2012 Motorcycle(s): 2017 Motus MSTR (Kara), 1990 Ninja 600R (ZX600C3) (Scrappy) Posts: 185	I also wear full gear, even when it was 80F+ out. I was ... significantly warmer than I desired, but I'm pretty sure 40mph asphalt is a lot more harmful to the skin than the sun is. Thank, everyone, for your responses; ninjette.org has once again been very helpful.

November 1st, 2012, 09:33 PM	#16
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	It's better all around. It's a great system. The earliest I'll be able to take measurements for you is the week of thanksgiving since I'm at school without my ninjette. I'm pretty sure the diameter of the can and the mid-pipe is 2" though. If you wanted to keep the total area of the mid-pipe the same as the combined area of the individual headers, this means the headers would have to be 1.4" diameter each. That sounds about right from my mental picture of my exhaust system. Area P's standard can is 2" ID and their QC can is 1.75" ID. I'm not sure about the diameter of the rest of the system. More info here: http://areapnolimits.com/products/Sl...Ninja-1988.php

November 3rd, 2012, 01:55 PM	#18
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	That sounds about the same as mine. I'm 95% sure that the merge collector is 2", which means the individual sides before that have to be a maximum of 1.41" diameter to keep the pressure the same through the mid-pipe. Go for it!! do 1.375" headers, a 2" collector, and then an 18" can with a 2" core. You've basically pieced together a Muzzy/Area P exhaust at that point. Check out this thread. Zaydoc hasn't been on in a while, but the thread has some relevant pictures/info in it. http://www.ninjette.org/forums/showthread.php?t=96907