getting the klr to breath - 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.

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post #1 of 23 Old 06-29-2011, 07:55 AM Thread Starter
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getting the klr to breath

just picked mine up yesterday and have a whole 30 miles on it this makes less noise than my inverter generator!!! and can hear the airbox gasping for air. so what does it take to open up the intake and exhaust. is there a reasonably priced slip on to get??? was looking on ebay and everything is $400+!!! would assume the airbox has a very small snorkle, can the airbox lid be removed??? not gonna be riding in any mud, maybe add a k&n with a prefilter? now on to the military grade muffler, do they use this thing for the abrahms tank or what thing has got to weigh at least 20-30 pounds, any way to gut it or loose some of the baffling. noise does not bother me! also if anyone has a setup what jets are you running, main and pilot air/fuel screw setting. the carb on it looks pretty easy to spin to the side to rejet. have read on here about a lot of peeps changeing the needle position? have always found on 2 strokes better to redo the jets. i can tell me and this bike are gonna have a long love affair and i need to hear her scream at me a little more the quite is nice, but don't think i've ever left anything i've ever had stock, so lets get to moddin'...
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post #2 of 23 Old 06-29-2011, 08:18 AM Thread Starter
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i stand corrected just did another search on ebay and found a couple of dg slip ons for about 150, 5.5 pounds with 98db and a spark arrestor. anyone have any experience with one of these???
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post #3 of 23 Old 06-29-2011, 11:10 AM
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Theories are in no short supply on this issue. Hard, cold, repeatable facts are a little scarce. Utilizing the same after market components on two or three identical bikes won't necessarily produce similar power increases, as dyno tests can be affected by things as simple as drive chain condition and types and balance of tires.

I see the KLR 650, stock, as a blank palette, ready for you to mold to your needs. It might be a poor choice for a hooligan build. Kinda like prepping Gramma's Chevy Kingwood wagon for the drag strip.....If you're going to the expense and effort, maybe it better to pick a builder more fitting to the purpose.

If loud is all you are after, keep in mind you might meet as much resistance getting there from the motorcycle community as from the bird and bunny people. I take a little issue with someone else throwing me under the bus. I seem to get there just fine on my own, thank you.



I live near here and I ride here. The George Washington National Forest. A bunch of the general population wants me out of there. I understand not many others here enjoy this Forest as I do. I wouldn't knowingly do anything to impose restrictions on you. I wouldn't. But what you do to your exhaust may influence the people in your neighborhood that vote on whether or not I continue riding roads like this. And everyone else that may be facing being shut out of not-so-public-lands. Just food for thought.

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“many a trip continues long after movement in time and space have ceased”- Steinbeck, [I]"Travels with Charlie"
[/I]
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post #4 of 23 Old 06-29-2011, 11:24 AM
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Quote:
Originally Posted by 89sandman View Post
just picked mine up yesterday and have a whole 30 miles on it this makes less noise than my inverter generator!!! and can hear the airbox gasping for air. so what does it take to open up the intake and exhaust. is there a reasonably priced slip on to get??? was looking on ebay and everything is $400+!!! would assume the airbox has a very small snorkle, can the airbox lid be removed??? not gonna be riding in any mud, maybe add a k&n with a prefilter? now on to the military grade muffler, do they use this thing for the abrahms tank or what thing has got to weigh at least 20-30 pounds, any way to gut it or loose some of the baffling. noise does not bother me! also if anyone has a setup what jets are you running, main and pilot air/fuel screw setting. the carb on it looks pretty easy to spin to the side to rejet. have read on here about a lot of peeps changeing the needle position? have always found on 2 strokes better to redo the jets. i can tell me and this bike are gonna have a long love affair and i need to hear her scream at me a little more the quite is nice, but don't think i've ever left anything i've ever had stock, so lets get to moddin'...

The bike is lean on the low speed carb circuits stock. The .22 mod is the first thing you should do and go from there. Some take out the airbox snorkel or drill holes but without modifing the head there's not much benifit. Same with changing out the muffler. A K&N filter has been shown to add restriction on a KLR. The stock filter is fine or go with a Uni.

Soap box time... don't make your bike louder! Loud bikes are impacting all riders adversly. You won't gain much performance on a KLR but you will make more enemies of motorcycling.

No eye has seen, no ear has heard, no mind has conceived what God has prepared for those who love him. 1 Cor 2:9
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post #5 of 23 Old 06-29-2011, 01:32 PM
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I would normally avoid this issue as I am ignorant on performance gains from aftermarket exhausts, but a couple of the responses regarding the potential for motorcycle noise abatement amongst the population struck a chord with me after my recent trip.

While visiting Rocky Mountain National Park, I myself was annoyed by the never-ending parade of roaring, crackling Harleys and loudly-whining sport bikes that could be heard coming from miles away.

At one point, I even thought, "This place would be a hell of a lot nicer if they just kept them out. There are a lot more cars, but they don't make much noise." The intrusion of motorcycle noise definitely detracted from the experience. I wasn't the only one: I heard a few comments from other visitors that mirrored what I was thinking.

After I had that thought, I actually made it a point to take it easy on the throttle and keep my noise down out of respect for others, and this with a stock muffler.

Good points made here: we have enough problems with the folks that want to end riding opportunities on public lands for whatever reason. We don't need any more based on noise abatement issues that can be avoided.

I'm fortunate enough that I could ride around where I live with no muffler at all if I wanted to, but all places aren't like that and I try to respect that to avoid the day I pull up to the park gate and am greeted with a "No Motorcycles Or Offroad Vehicles" sign or some ranger standing there with a decibel meter to determine if I should be allowed entrance or not based on the loudness of my motorcycle.

Thus endeth my rant.




Last edited by planalp; 06-29-2011 at 01:44 PM. Reason: Poor Grammar
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post #6 of 23 Old 06-29-2011, 01:46 PM
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All great points on excessive noise, we are in the minority, it only takes the right person talking to the right person and walla, areas get closed. I chose the Q4 FMF for a reason, it's quiet, yet helps her breathe better. The Hoh Rainforrest ride I did a coupla weeks ago there were a coupla KTM riders with obnoxious pipes, there were quite a few riders who were annoyed and commented on them. I also received quite a few comments on the Q4-all to the good, with a few considering the swap. They had always stayed stock because they just didnt want to add to the pollution (noise). Do the .22 mod, drill the slide, try out the Q4 and enjoy the scenary. I'm happy with the increased torque and response, keep in mind, I have a heavily modded C14 with something in the neighborhood of 160 at the back tire. The KLR is my on road/off road 2 wheeled tractor, all I want it to do is pull me around without undue effort, and it does. I even put the stock pipe back on my YZ, it was just too loud with no real gain in performance. Why tick off the voting populace?

To have loved is to have lived.
'08 C14 Full pipe, PCV, Auto tune, Flies out
'06 YZ450F Uh, Bark Busters and Trail Tech Vapor
'05 KLR, Trail Tech LEDs, Trail tech Voyager, Bark Busters, .22 mod, slide drilled, FMF Q4, Trackside heated Grips, EBC 320mm Rotor upgrade, cleated pegs, Pirelli M21s, 25mm ammo can tail box, soft bags and 2 large MSR fuel bottles.
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post #7 of 23 Old 06-29-2011, 01:53 PM
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Coming from a highly modded and performing and loud bike I wanted a smoother and quieter bike. So I went for the light mods that would allow the bike to breathe better and not be so lean.
Search on here for the .22 mod, drill the cap off the air/fuel screw and back it out, remove the snorkle, frugal exhaust mod.
These cheap and easy mods woke the KLR up quite abit while keeping it rather quiet.

If you want to go deeper than that then you could get the James Dean jet kit, exhaust...
I don't know that it would be worth the extra $$$ involved though.

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post #8 of 23 Old 06-29-2011, 07:31 PM
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On the loud exhaust, it is cool for 10 minutes. Look, a loud pipe doesn't prove your manhood nor does a quiet one impugn it. I LIKE how quiet the bike generally is. I come and go at late hours at times. It is nice to be able to get in the garage without waking the neighbors. As a matter of fact, I want a lighter, more freely breathing, quieter pipe. That would really come in handy at night!!!
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post #9 of 23 Old 06-29-2011, 10:28 PM Thread Starter
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sorry making a bike perform up to its potential is not your goal but it is mine. 98db pipe is legal in oregon so where's the problem??? you like your bike slow and quite, good for you. i want mine to have some snap and guts. i'm not dogging you guys for having a bike that prerforms well below its potential and liking it, but does only the love go to those who agree with you??? if everyone doesn't conform to your liking then its a bad thing??? i can see a problem with screaming loud harleys that make you want to plug your ears when they go by, but 98db, come on now. as for my manhood, trust me theres no need to make that any bigger than it already is so voice your opinion and i'll feel free to voice mine. i'm not here for a big group hug, so flame on, i can take it, i just hope you guys are man enough to take it in return... so you guys ride around and worry about what everyone else thinks you should do. for me, i'm on this rock one time and i've only got two people i'm worried about pleasing, and guess what your not either of them
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post #10 of 23 Old 06-29-2011, 10:55 PM
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alright

Kawasaki KLR650 - Adventure Lite
Tagged KTM250XCF-W - Rocket
Tagged KLX300 - Trail Tractor
'84 XR250R - Retro Ride
RMZ250 - Dirty
CRF80 - Kids
CRF70 - Kids
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