OEM exhaust noise level DB - Page 3 - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

 9Likes
Reply
 
LinkBack Thread Tools Display Modes
post #21 of 49 Old 03-21-2019, 10:53 AM
5th Gear
 
Join Date: Jan 2011
Posts: 4,398
Quote:
Originally Posted by pdwestman View Post
Damocles, The answer to your question is here, Ouch! https://www.klrforum.com/680961-post6.html
Ah, 108 db and satisfactory!

You MAY be able to approach that level with a KLR650; rode behind one I'd classify in that league with my seat-of-the-pants sound-meter! I'd be surprised if the KLR650 you intend buying exceeds that value (and, most state DOT limits also, I'd imagine).

“You better put down that gun. You got two ways to go, put it down or use it. Even if you tie me, you’re gonna be dead.” "John Russell" (Paul Newman), Hombre
Damocles is offline  
Sponsored Links
Advertisement
 
post #22 of 49 Old 03-21-2019, 02:39 PM Thread Starter
1st Gear
 
Join Date: Feb 2019
Location: S. Texas
Posts: 97
Quote:
Originally Posted by Damocles View Post
Ah, 108 db and satisfactory!

You MAY be able to approach that level with a KLR650; rode behind one I'd classify in that league with my seat-of-the-pants sound-meter! I'd be surprised if the KLR650 you intend buying exceeds that value (and, most state DOT limits also, I'd imagine).
No, I want my KLR as quiet as I can get it without hampering any performance. I want it Stealth . My Indian Scout was so choked up (stock)I was supprized it ran. Although it was at 108 DB, I managed to quieter it down (3-4DB) with some perforated reverse cones I made and installed them inside the aftermarket mufflers. It did not hamper any power anywhere except maybe at top (7-9k) rpm, where I don’t ride anyway. The benefit of a higher flow air box and Fuel controller does no good w/ stock exhaust. I actually get better mileage and the bike runs a bit cooler too. A little louder exhaust noise was/is worth it to me and is not annoying unless you really crank it.IMHO.
rodent64 is offline  
post #23 of 49 Old 03-22-2019, 11:17 AM
2nd Gear
 
Join Date: Jun 2017
Posts: 320
Quote:
Originally Posted by rodent64 View Post
No, I want my KLR as quiet as I can get it without hampering any performance. I want it Stealth . My Indian Scout was so choked up (stock)I was supprized it ran. Although it was at 108 DB, I managed to quieter it down (3-4DB) with some perforated reverse cones I made and installed them inside the aftermarket mufflers. It did not hamper any power anywhere except maybe at top (7-9k) rpm, where I don’t ride anyway. The benefit of a higher flow air box and Fuel controller does no good w/ stock exhaust. I actually get better mileage and the bike runs a bit cooler too. A little louder exhaust noise was/is worth it to me and is not annoying unless you really crank it.IMHO.
An Indian Scout will rev to 9 grand? That is impressive. My 4 cylinder beemer only goes to 8.5
Voyager is offline  
 
post #24 of 49 Old 03-22-2019, 01:14 PM
4th Gear
 
Join Date: Aug 2010
Location: Kelowna, B.C.
Posts: 2,411
....not bad. My ZX6R redlined at 16,000 rpm IIRC

Cheers,
Dave
DPelletier is online now  
post #25 of 49 Old 03-22-2019, 01:53 PM
OverDrive
 
Join Date: Nov 2009
Location: Lander, Wyoming
Posts: 5,635
Which numbers do you really find most impressive?

67mm x 42.5mm & 16,500 rpm x 4

99mm x 73.6mm & 9000 rpm x 2

100mm x 83mm & 7500 rpm x 1

Then consider their normal Legal highway speed operating rpm and longevity?

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
pdwestman is online now  
post #26 of 49 Old 03-22-2019, 02:44 PM
4th Gear
 
Join Date: Aug 2010
Location: Kelowna, B.C.
Posts: 2,411
Quote:
Originally Posted by pdwestman View Post
Which numbers do you really find most impressive?

67mm x 42.5mm & 16,500 rpm x 4

99mm x 73.6mm & 9000 rpm x 2

100mm x 83mm & 7500 rpm x 1

Then consider their normal Legal highway speed operating rpm and longevity?
Well, number one generated almost 4x the HP so that's probably most impressive; there is nothing about a ZX6R that makes any logical sense regarding "Legal highway speed operating rpm"...... I could break the legal speed limit on any road in first gear....

that said the bike was about as comfortable as a sleeping on sharp rocks.....hence it was replaced. I owned all of those (assuming ZX6r, Versys and KLR) and they each have their advantages....but there was no denying the engineering and sheer thrust of the ZX.




Dave
DPelletier is online now  
post #27 of 49 Old 03-22-2019, 04:24 PM
Pretty in Pink, dunno why
 
Tom Schmitz's Avatar
 
Join Date: Feb 2009
Location: Redondo Beach
Posts: 7,626
Garage
Quote:
Originally Posted by Voyager View Post
An Indian Scout will rev to 9 grand? That is impressive. My 4 cylinder beemer only goes to 8.5
Oh, horseshit, @voyager. Them krauts is always low-balling the redline number. I bounce my flat twin off the rev limiter all the time.

They'll spin up.

Tom [email protected]

“The muzzle of the Luger looked like the mouth of the Second Street tunnel, but I didn’t move. Not being bullet proof is an idea I had had to get used to.” -Philip Marlowe

“'Why' and 'How' are words so important they cannot be too often used.” -Napoleon Bonaparte

Sting like a butterfly.
Noli Timere Messorem
Tom Schmitz is online now  
post #28 of 49 Old 03-22-2019, 04:37 PM
2nd Gear
 
Join Date: Nov 2018
Location: Los Angeles, CA
Posts: 253
Quote:
Originally Posted by pdwestman View Post
Which numbers do you really find most impressive?

67mm x 42.5mm & 16,500 rpm x 4

99mm x 73.6mm & 9000 rpm x 2

100mm x 83mm & 7500 rpm x 1

Then consider their normal Legal highway speed operating rpm and longevity?
Are these numbers strokes, bores and cylinder counts?

2017 KLR in black
samuel is offline  
post #29 of 49 Old 03-22-2019, 05:01 PM
OverDrive
 
Join Date: Nov 2009
Location: Lander, Wyoming
Posts: 5,635
It is always Bore x Stroke x cylinder count, Samuel.



Kawa. ZX6-R / 1,402,500mm distance per minute of a single piston traveled @ 16,500 rpm. I'll guess about 7500RPM @ 70 mph.

Indian Scout / 1,324,800mm distance per minute of a single piston traveled @ 9000 rpm. I'll guess about 4500 RPM @ 70 mph.

Kawa. KLR650 / 1,245,000mm distance per minute of a single piston traveled @ 7500 rpm. About 5000 RPM @70 mph.

With stock exhausts at steady cruising throttle the KLR might seem the loudest of the 3 to the rider.

With aftermarket exhausts & accelerating from 60-80 in high gear I'd bet the Indian Scout would seem to be the loudest of the 3 to the rider & the surrounding public.

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
pdwestman is online now  
post #30 of 49 Old 03-22-2019, 05:02 PM
4th Gear
 
Join Date: Aug 2010
Location: Kelowna, B.C.
Posts: 2,411
[QUOTE=Tom Schmitz;681259]Oh, horseshit, @Voyager. Them krauts is always low-balling the redline number. I bounce my flat twin off the rev limiter all the time.

They'll spin up.


The S1000RR is quite a machine.....probably not what Voyager rides though, is it Voyager?

Dave
DPelletier is online now  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki KLR 650 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
OEM Exhaust Cut open DXKLR The Off Topic Lounge 0 03-01-2008 10:29 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome