KLR's and Altitude - Kawasaki KLR 650 Forum
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post #1 of 17 Old 06-21-2012, 11:08 PM Thread Starter
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KLR's and Altitude

Greetings friends from higher ground. I plan on heading down the Divide in July and was wondering if any mods were required to keep the KLR breathing at altitude? I have a 2009 that has had no mods done carb wise. Thanks in advance.

09 KLR650
01 Jeep XJ w/ 200,000 miles as of 3-26-11
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post #2 of 17 Old 06-21-2012, 11:33 PM
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My guess is, since you won't have as much oxygen as you do at sea level, maybe a jet kit, or at the very least a shim on the needle-the $.22 mod will allow you to get the oxygen you need FROM the fuel.

You probably don't need to do it, you will just have to consume more fuel.
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post #3 of 17 Old 06-22-2012, 12:23 AM
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Originally Posted by sardog1 View Post
Greetings friends from higher ground. I plan on heading down the Divide in July and was wondering if any mods were required to keep the KLR breathing at altitude? I have a 2009 that has had no mods done carb wise. Thanks in advance.
I live at 5200 ft. and have ridden over 10,000 ft. Did the .22 mod with 1 shim, pulled snorkle and run an UNI filter with no problems on my 09. What route are taking?

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post #4 of 17 Old 06-22-2012, 01:10 AM
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I rode out to Colorado last Summer with an unmodified carb. No problems at all up to nearly 13,000 feet. I could tell it was breathing a little hard (seemed a little slower to start and the idle seemed a little weak) but didn't feel it affected the performance at all once I took off and started riding.



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post #5 of 17 Old 06-22-2012, 08:18 AM Thread Starter
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Originally Posted by terry_1956 View Post
I live at 5200 ft. and have ridden over 10,000 ft. Did the .22 mod with 1 shim, pulled snorkle and run an UNI filter with no problems on my 09. What route are taking?
I bought the mountain bike map set from Adventure Cycling and will download GPS route from Big Dog. Do you have any other suggestions? I am fortunate to have three weeks vacation planned with another week as backup so I'm not in a rush. Plan on lots of photography and hopefully an off day or two in Ouray, CO to visit some friends I made on a Jeep Jamboree in 2001.

Good to hear that nothing major is needed for altitude. Was planning on the 22cent mod anyway. Already running a Uni filter and have a pre-oiled one to swap out when needed.

09 KLR650
01 Jeep XJ w/ 200,000 miles as of 3-26-11
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post #6 of 17 Old 06-22-2012, 09:41 AM
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The CVK40 does a pretty good job of compensating for altitude. As the air density drops it draws less fuel and the mixture stays pretty much where it ought to be.

My bike is tuned at sea level and has been ridden from sea level to over 12K feet with no adjustments required.

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post #7 of 17 Old 06-22-2012, 12:59 PM
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Already running a Uni filter and have a pre-oiled one to swap out when needed.
In my opinion, clean air filters are about the best move you can make. Enjoy the trip, by the way. Sounds like fun! Remember to pack your camera.



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post #8 of 17 Old 06-22-2012, 10:05 PM
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I have the same route in mind. At least the section through Colorado. It would be much better with a buddy. I'm not sure if you're interested or if I'll be ready by then but I'll try.
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post #9 of 17 Old 06-22-2012, 10:18 PM Thread Starter
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In my opinion, clean air filters are about the best move you can make. Enjoy the trip, by the way. Sounds like fun! Remember to pack your camera.
Thanks and don't worry about forgetting the camera! Bought a tail box just for the camera gear! Will have a Canon 5D Mkll DSLR with various lenses, a Leica point and shoot, a GoPro for video and an iPhone. Digitally, got it covered! Even a Hyperdrive Portable hard drive to back things up. Oh, and I'll bring the iPad for when in town to post pics. My god, I've gone from a semi-minimalist to this... I think intervention is in order!

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post #10 of 17 Old 06-22-2012, 10:29 PM Thread Starter
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I have the same route in mind. At least the section through Colorado. It would be much better with a buddy. I'm not sure if you're interested or if I'll be ready by then but I'll try.
It'd be great to have a "local" to ride with! PM sent.

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