Need Help Choosing Muffler - 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.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 24 Old 10-31-2012, 07:52 PM Thread Starter
2nd Gear
 
Join Date: Oct 2012
Location: Silver City, NM
Posts: 217
Need Help Choosing Muffler

The windfall hit today and I'm starting to order some stuff for my '11. Biggest thing for right now is which muffler ?? I did the cut out mod on my stock muffler and noticed a small increase in power.

I've read so much stuff on so many sites and much of it contradictory that I don't really know WTH by now.

Do the aftermarket exhausts flow enuf better to justify their high cost ?? I absolutely do not want a loud roar coming out, esp. a high pitched crackle - moderate noise is fine. Deeper sound even better but not loud. I read Patman's dyno test results from 2007 and he strongly recommends the Big Gun Q series with silencer and the dyno seems to bear him out.

Those results are over 5 years old - is there anything out there more up to date or is that still the good word ??

Thanks in advance............Lar.
biglar is offline  
Sponsored Links
Advertisement
 
post #2 of 24 Old 10-31-2012, 08:55 PM
2nd Gear
 
pismocycleguy's Avatar
 
Join Date: Nov 2009
Location: Pismo Beach, CA
Posts: 281
Unhappy

I don't believe that any of the after market canisters increase the actual horsepower very much, if at all. I think the increased sound just gives the sensation of more power/speed. And if they actually increase the power any, it is a very expensive proposition. $500 for maybe one horsepower increase, MAYBE!
But the canisters do decrease the total weight of the bike, so there may be some benefit?
If you like the increased sound, go for it!
pismocycleguy is offline  
post #3 of 24 Old 10-31-2012, 09:52 PM
4th Gear
 
Savage's Avatar
 
Join Date: Apr 2011
Location: Kansas
Posts: 1,205
Garage
Quote:
Originally Posted by biglar View Post
The windfall hit today and I'm starting to order some stuff for my '11. Biggest thing for right now is which muffler ?? I did the cut out mod on my stock muffler and noticed a small increase in power.

I've read so much stuff on so many sites and much of it contradictory that I don't really know WTH by now.

Do the aftermarket exhausts flow enuf better to justify their high cost ?? I absolutely do not want a loud roar coming out, esp. a high pitched crackle - moderate noise is fine. Deeper sound even better but not loud. I read Patman's dyno test results from 2007 and he strongly recommends the Big Gun Q series with silencer and the dyno seems to bear him out.

Those results are over 5 years old - is there anything out there more up to date or is that still the good word ??

Thanks in advance............Lar.
You did the frugle exhaust mod. Did you do the .22 mod and drill out the fuel screw? Did you remove the snorkle?

Kawasaki KLR650 - Adventure Lite
Tagged KTM250XCF-W - Rocket
Tagged KLX300 - Trail Tractor
'84 XR250R - Retro Ride
RMZ250 - Dirty
CRF80 - Kids
CRF70 - Kids
Savage is offline  
 
post #4 of 24 Old 11-01-2012, 12:22 AM
2nd Gear
 
terry_1956's Avatar
 
Join Date: Aug 2010
Location: Casper, WY
Posts: 389
+1 on what Savage said. Many have good reviews of the Lexx exhaust for sound and price.
terry_1956 is offline  
post #5 of 24 Old 11-01-2012, 12:34 AM Thread Starter
2nd Gear
 
Join Date: Oct 2012
Location: Silver City, NM
Posts: 217
Quote:
Originally Posted by terry_1956 View Post
+1 on what Savage said. Many have good reviews of the Lexx exhaust for sound and price.
Better and better info. Thanks. I googled the Lexx and watched a video clip with it. Sounds about like my stock exhaust with the cutout mod and spark arrester. (that spark arrestor really smoothed out the sound) I think I'll stay where I'm at on the muffler.

Thanks again...........Lar.
biglar is offline  
post #6 of 24 Old 11-01-2012, 08:00 AM
4th Gear
 
Join Date: Oct 2006
Location: Pefferlaw,Ontario
Posts: 1,636
OK....I need to know what has been done to your engine to effectively suggest an exhaust......

Which low buck method did you use? Large hole saw method or my way of just taking out the tweety tube?

If you have a big bore kit and head work done, then an exhaust will benefit you for sure! The LEXX flows so much better than anything you can do to a stock can, believe me I have tried! I hate loud exhausts. Sure they are fun for a while but over the long haul, not so much!....IMHO.

If you see the pics of an opened up stock can you will instantly see how much restriction there is in the stock system. I was shock at how much better the whole system flowed after installing the LEXX. The LEXX was one of the cheapest can with a very good repretation so far. Still repackable, which is a bit of a pain to have to do whenever. It isn't much louder than my modded stock can and I also drilled out the stock spark arrester to get even more flow from it. BUT, not much use in more flow if you aren't feeding the engine with more air/fuel mixture it can use is there? So, you need to have a better flowing system to get the most from the exhaust expence.

IMHO, I would be putting the exhaust money towards a 685 kit or after that bigger valves before just adding more noise to the world. It's motor work that will get you more faster eh...! The more you spend on the whole internals of your engine the better it will perform....adding a loud can on the back of it will just make noise. Plain and simple. Sorry to say.

Willys
willys is offline  
post #7 of 24 Old 11-01-2012, 09:02 AM
1st Gear
 
Join Date: Jul 2011
Location: NH
Posts: 85
http://www.motorcycle.com/how-to/kaw...t-7-89013.html

Independent testing shows a 3 hp increase with the jardine RT5 slip on.
eparker202 is offline  
post #8 of 24 Old 11-01-2012, 09:46 AM
4th Gear
 
Join Date: Oct 2006
Location: Pefferlaw,Ontario
Posts: 1,636
Holy CRAP!!! Talk about LOUD!!!! That is basically a straight through can....you can do the same with a LEXX if you take the quiet tip out....ask me how I know! Yes it was a noticable difference but not fun after a few minutes on the highway! To each their own.....

Willys
willys is offline  
post #9 of 24 Old 11-01-2012, 10:47 AM Thread Starter
2nd Gear
 
Join Date: Oct 2012
Location: Silver City, NM
Posts: 217
Quote:
Originally Posted by willys View Post
OK....I need to know what has been done to your engine to effectively suggest an exhaust......

Which low buck method did you use? Large hole saw method or my way of just taking out the tweety tube?

If you have a big bore kit and head work done, then an exhaust will benefit you for sure! The LEXX flows so much better than anything you can do to a stock can, believe me I have tried! I hate loud exhausts. Sure they are fun for a while but over the long haul, not so much!....IMHO.

If you see the pics of an opened up stock can you will instantly see how much restriction there is in the stock system. I was shock at how much better the whole system flowed after installing the LEXX. The LEXX was one of the cheapest can with a very good repretation so far. Still repackable, which is a bit of a pain to have to do whenever. It isn't much louder than my modded stock can and I also drilled out the stock spark arrester to get even more flow from it. BUT, not much use in more flow if you aren't feeding the engine with more air/fuel mixture it can use is there? So, you need to have a better flowing system to get the most from the exhaust expence.

IMHO, I would be putting the exhaust money towards a 685 kit or after that bigger valves before just adding more noise to the world. It's motor work that will get you more faster eh...! The more you spend on the whole internals of your engine the better it will perform....adding a loud can on the back of it will just make noise. Plain and simple. Sorry to say.
Good info, thanks. I can't afford the whole shebang right now and will have to go in steps. From all I've read, I'd love to get the 685 kit but it really adds up.

As far as I know, the engine is bone stock. Going in steps, would it be better to put the larger piston/cylinder in 1st or do the head 1st ?? The head is really the kicker - buy the piston and don't do anything to the head, you're not getting full potential of the parts - but then again, how much does the head porting really change things ?? The larger valves ??

Buy the head and it'd be almost a necessity to have the porting done on the head and if you've gone that far, better put in the larger valves, too. That adds up to a lot of money.

Do all that and it'd be silly not to add a better flowing muffler. Can't do it all. What do you recommend ??

Thanks.............Lar.
biglar is offline  
post #10 of 24 Old 11-01-2012, 01:07 PM
4th Gear
 
Join Date: Oct 2006
Location: Pefferlaw,Ontario
Posts: 1,636
IMHO......it all depends upon how much change you can get your hands on.
If you are struggling like many are.....then it makes sense to do the easy low buck mods first and save for the bigger ones down the road. Buy a UNI air filter, get a KLX needle kit, search out my way of doing the low buck exhaust mod first before cutting up a perfectly good exhaust and ruining it(you can always cut more out but it gets very difficult to go the other way!),.
If that is good for you now, then leave it alone and save save save!....The next step would be 685, then you can do the head in stages or all at once, your call.....it will only cost you gaskets each time......a 685 gasket is $50...so not cheap to ruin and keep replacing, that money can go towards a set of valves or a good shop having a go at it with a die grinder. The 685 will give you a good bang, not great but good....the head will give you the same bang for more bucks, not as good of return on your $$$, BUT....the head is where you will make HP. The engine needs to breath and breath well, so larger valves and a good porting job will accomplish this. You now have what most people stop at. If you can still find some extra change, think flatslide carb......it delivers the air/fuel mixture that the engine wants instantly compared to vacuum operated as the CV carb does. It also gives it a pump too, so you get the best of two worlds, instant throttle responce and a pump to jam that fuel down it's throat. Yes if you insist on using the pump as you will once you get the feeling from it...your gas milage will suffer, but if you learn not to use the pump every time the milages aren't that far off the last stage of the engine set up. I get low 40's with my big engine and when running a flatslide for an experiment on a bone stock 08 engine I got better milages than with the CV carb...mid to upper 50's easily!
It is a hard pill to swallow when it comes to engine building, do I jump in feet first or carefully plan out an attack. Most jump right in....I did and then took it apart many times doing things as I saw fit. I have wasted many $$$ doing it this way. Then comes cams....another $500 by the time they are installed....but when added to the above engine it will allow this engine to scream past redline and pull all the way there. Yep, I love it!!!
Think about how fast you can save the money and then do things as you can without wasting money.....seriously it is the best way.....almost impossible to do, but the best way.

Sorry.

Willys
willys is offline  
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
Quiet Muffler? justjeff 2008+ KLR650 Wrenching & Mod Questions 35 07-02-2017 10:53 PM
Studebaker Muffler DuckPicker03 Bike and Rider Gear 11 05-05-2010 07:58 AM
Choosing a first time bike ryder37 KLR & Other Motorcycle Related Discussion 7 04-21-2009 09:14 PM
Slip on Big Gun muffler Interstate 1987 to 2007 Wrenching & Mods 3 05-04-2007 05:52 AM

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