Air box - Kawasaki KLR 650 Forum
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post #1 of 5 Old 04-16-2011, 09:59 AM Thread Starter
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Air box

One of the things I learned 10 years ago during my other KLR experience was how much dirty air the intake pulled in. I was running around the Great Basin with HT bags and a K&N air filter. I was dismayed at how many times I had to stop and unbolt the hard bags, take the side cover off and try to scrape enough crud off the gauze filter to allow the bike to run. I went to a Uni with a sock so I had 2 foam layer plus the sock to get through multiple days on the trail. I could, if necessary, even wash a foam filter out with gas from the tanker and carry a small amount of filter oil. To my knowledge, no one ever really came up with a cleaner intake of fresh air? I was disappointed when the 2nd generation hadn't even attempted to correct the one critical area. Has anything changed over the years?
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post #2 of 5 Old 04-16-2011, 12:52 PM
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Some riding conditions are going to be extremely dusty, no matter what you do. With the airbox inlet back by the rear tire, and the trapped environment of having a pannier to the outside of the inlet, your options are somewhat limited.

I opened up the top of the airbox beneath the seat, which seems to have helped in that the air inlet is further forward of the dust / dirt churning around the rear wheel, and installed a deflector cover for the rear shock, which seems to help cut down some of the dirt coming forward. I also fashioned some panels out of some cheap flat automotive mudflaps that I tie strapped to the frame behind the side panels, which hang a little lower than the side panels.

Some people use the twin-air filters, which are relatively inexpensive, and carry an oiled spare sealed in a heavy duty freezer baggie.

You might also consider leaving the right side panel at home if you are traveling in extreme dust conditions. Might look a little ugly, but you can get to the air filter a lot quicker and don't have to pull the pannier off unless you have them mounted too far forward for access to the filter cover.

Leaving the left side panel at home leaves you quicker access to the battery as well. The KLR isn't going to win any beauty contests anyway...

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Originally Posted by Lockjaw View Post
Oh, and I ran two quarts of hot oil through before filling her up cause I'm anal.
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post #3 of 5 Old 04-16-2011, 06:41 PM Thread Starter
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Good thoughts there. I do pack spare a filter when out for multiple days. The flaps and leaving the sidecover home is excellent! I no longer use hard solid mount luggage either. Just my own preference nowadays.
Bert
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post #4 of 5 Old 04-16-2011, 07:09 PM
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Quote:
Originally Posted by bwfox View Post
One of the things I learned 10 years ago during my other KLR experience was how much dirty air the intake pulled in. I was running around the Great Basin with HT bags and a K&N air filter. I was dismayed at how many times I had to stop and unbolt the hard bags, take the side cover off and try to scrape enough crud off the gauze filter to allow the bike to run. I went to a Uni with a sock so I had 2 foam layer plus the sock to get through multiple days on the trail. I could, if necessary, even wash a foam filter out with gas from the tanker and carry a small amount of filter oil. To my knowledge, no one ever really came up with a cleaner intake of fresh air? I was disappointed when the 2nd generation hadn't even attempted to correct the one critical area. Has anything changed over the years?

Heard of Filter Skins? They are a thin foam pre-filter that goes over the main filter.

A KLR doesn't suck near the dust that a dirt bike does, their airbox is open under the seat. No such thing as clean air when you're in the dirt anyway.

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 5 Old 04-16-2011, 07:19 PM Thread Starter
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Yea, that's what I meant by "sock". Been using them offroad for 30 years and I use them routinely on the KLR. Even my offroad bikes don't pull the air from the back by the tire. The KLR is one of the worst offenders.
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