Air Filter ? - 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 27 Old 01-12-2016, 06:28 PM Thread Starter
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Air Filter ?

Can someone tell me if this is where the air filter input is, and if so, is there any other place the air box get's it's air from?


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2017 Yamaha XT250
1990 Honda NX250 (Green/White)
2011 Kawasaki KLR 650 (Orange & White )

My KLR Page..http://www.powers31.info/2011_KLR650.htm

Mod's to KLR:
Power socket, L.E.D. Battery Indicator, Camera bag holder
Custom Saddlebag frames .
Louder horns, Firstgear Onyx tail bag.
Custom Aluminum Skid Plate.
Cut down seat with Custom pad.
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post #2 of 27 Old 01-12-2016, 07:06 PM
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Larry31,
Yes, that is the standard air inlet to the KLR air box.
Some owners "pull that rubber snorkel out".
Some owners drill four, 1 inch holes into the top of the air box, straight across, left to right.
Some owners drill six, 1 inch holes, which puts 2 holes directly above the filter. (which I personally don't like.)
Some owners 'carve-out' the entire top of the dirty side of the air box, called the "L" mod. (which I don't like.)

I personally like four, 1 inch holes, with the snorkel still in place.
I feel the filter stays cleaner longer, breathing cleaner air from under the seat, and less dusty air from the rear tire.

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
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post #3 of 27 Old 01-12-2016, 08:22 PM
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Glenn won't let me tell it again over there! His loss.

Larry, Did you 'draw blood' removing the side cover? I see a drip.

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting

Last edited by pdwestman; 01-12-2016 at 08:26 PM. Reason: Added text.
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post #4 of 27 Old 01-12-2016, 08:45 PM Thread Starter
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Air box

PDWestman
Quote: " Some owners "pull that rubber snorkel out".
Are you referring to the oval rubber "grommet-looking thing outlining the hole into the air box ?

" Larry, Did you 'draw blood' removing the side cover? I see a drip."
No, that is just a mark left from a marker. I forgot to wipe it off.

What is the purpose of the piece of plastic normally slid in directly over the inlet hole. It has a bunch of holes in it. ( Not shown in my photo.)

You mention putting more holes in the box. My filter gets real dirty very quick. I could see it, if I rode dusty roads, but most of my driving is paved, and the dirt roads I travel normally don't get dry enough to kick up a lot of dust.
I think my filter would need even more frequent cleaning if I were to put more in holes.

I've never had a bike that got the air filter this dirty in such a short time.

Ageing Gracefully



2017 Yamaha XT250
1990 Honda NX250 (Green/White)
2011 Kawasaki KLR 650 (Orange & White )

My KLR Page..http://www.powers31.info/2011_KLR650.htm

Mod's to KLR:
Power socket, L.E.D. Battery Indicator, Camera bag holder
Custom Saddlebag frames .
Louder horns, Firstgear Onyx tail bag.
Custom Aluminum Skid Plate.
Cut down seat with Custom pad.
Go Pro Camera mount.
Doo-Hicky
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post #5 of 27 Old 01-12-2016, 09:08 PM
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Quote:
Originally Posted by larry31 View Post
PDWestman
Quote: " Some owners "pull that rubber snorkel out".
Are you referring to the oval rubber "grommet-looking thing outlining the hole into the air box ?

" Larry, Did you 'draw blood' removing the side cover? I see a drip."
No, that is just a mark left from a marker. I forgot to wipe it off.

What is the purpose of the piece of plastic normally slid in directly over the inlet hole. It has a bunch of holes in it. ( Not shown in my photo.)

You mention putting more holes in the box. My filter gets real dirty very quick. I could see it, if I rode dusty roads, but most of my driving is paved, and the dirt roads I travel normally don't get dry enough to kick up a lot of dust.
I think my filter would need even more frequent cleaning if I were to put more in holes.

I've never had a bike that got the air filter this dirty in such a short time.
Larry31,
Glad to hear your not 'bleeding to death'.

When/if you pull the rubber grommet looking thing, you will notice more air intake noise. The plastic holey thing which used to be above the 'snorkel' has been jokingly referred to as a 'rodent guard'!

IME, 4 holes straight across, allow longer air filter service intervals.
Cleaner air from under the seat!

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting
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post #6 of 27 Old 01-13-2016, 06:58 AM Thread Starter
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Air filter

I wonder if ducting the air from outside the plastic, or seat would help with keeping the filter cleaner. Not sure how to do that, but just a thought. The area under my seat gets real dirty.

My Gold Wing's filter is buried way under the cowling. It's ducted to get air from the front of the bike.

Ageing Gracefully



2017 Yamaha XT250
1990 Honda NX250 (Green/White)
2011 Kawasaki KLR 650 (Orange & White )

My KLR Page..http://www.powers31.info/2011_KLR650.htm

Mod's to KLR:
Power socket, L.E.D. Battery Indicator, Camera bag holder
Custom Saddlebag frames .
Louder horns, Firstgear Onyx tail bag.
Custom Aluminum Skid Plate.
Cut down seat with Custom pad.
Go Pro Camera mount.
Doo-Hicky
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post #7 of 27 Old 01-13-2016, 07:24 AM
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replace the OEM filter with a K&N servicable filter , with a pre filter over that for dusty road conditions .... i have the K&N setup in mine and all i do is wash the pre filter .....and it saves buying new OEM filters all the time ....
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post #8 of 27 Old 01-13-2016, 09:13 AM
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The OEM filter is a serviceable filter, so they don't need to be "bought all the time".

The K&N flows less than an OEM or Uni filter due to the steel cap on the filter; they have less surface area. They also tend to filter less of the small particulates than a properly oiled OEM or Uni filter.

Here in the States we avoid K&N. Perhaps the K&N in Australia are not pleated paper with steel caps.

Tom

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post #9 of 27 Old 01-13-2016, 10:09 AM
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Quote:
Originally Posted by larry31 View Post
I wonder if ducting the air from outside the plastic, or seat would help with keeping the filter cleaner. Not sure how to do that, but just a thought. The area under my seat gets real dirty.

My Gold Wing's filter is buried way under the cowling. It's ducted to get air from the front of the bike.

Hey Larry. I'd rather clean the filter on my KLR than change the filter on my Goldwing. What a pain that is.

.

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post #10 of 27 Old 01-13-2016, 01:47 PM
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Quote:
Originally Posted by Tom Schmitz View Post
The OEM filter is a serviceable filter, so they don't need to be "bought all the time".

Perhaps the K&N in Australia are not pleated paper with steel caps.

Tom
Oops, that's an error Tom.

K&N air filters to the best of my knowledge are and always have been "Oiled Surgical Gauze".
And they will let talcum powder fine dust thru.

I also have discovered that too "old/thick/dry" Bel-Ray foam air filter oil will let the talcum powder fine dust thru also.

pdwestman
Modify at "YOUR OWN RISK"!

Still riding my 1987 KL650-A1. 85,000+ miles & counting

Last edited by pdwestman; 01-13-2016 at 04:28 PM. Reason: (an) error
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