K11 Owners Group

[Freedom45]

Comments sought about your experiences with K&N air filters on K11s. Bottom line, is it worth it for you?
_________________
1996 K1100RS SE, K1100K, K75S, Laverda 1200
MOA 9900
IBA #70 NRA

[Jim]

The stock filter is more than sufficient for your K bike. It filters better than the K&N, and lasts a long time. It's a bit of a pain to change the filter, but not that bad once you get it figured out. My advice (since you asked for it) - stick with stock.
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000

"We shall not all die, but we shall all be changed."

[RAL88]

I put one in mine and took it out after about 500-600 miles. On a car and where the filter is placed it stays relatively cool. On our bikes and where the filter is housed it gets way to hot and the oil drys out too quickly.
_________________
Rich

"If it ain't broke, take it apart and make it work better"
*************
'96' K1100LT-SE
'97' R850GS-R

[Klinker]

.02:

Had one in my ST1100 - I think it helped with performance a bit, but for the reasons listed above and others (like research that suggests K&N filters don't remove enough damaging particles - help me out with a source here, Old Geezers), I'd stick with stock.
_________________
tlp
1994 K1100RS

Only the Reasonists. They believe in an evidence-based world, something called Rationalism. But it's a tiny group, not so influential.
- Page Griffin

[Phil Marvin]

I used one many years ago on my first K1100LT. Then I read some of Tom Cutter's comments, especially the part about when he looks into the intake ports of bikes which use(d) K&N air filters and always finds a lot of dirt and crud (technical term) which he doesn't find on bikes with stock filters. I no longer use them and advise not using them and, if on your bike, replacing with a stock air filter. Even though BMW says to replace the stock filter at 12k miles, on the K75/100/1100 bikes, the stock filter is good for 50k+ (My OPINION, based on results of tests I have read).
_________________
Ride Safe,
Phil Marvin in El Paso, TX
'94 K75A/3
'95 K75RTP

[supercat1]

well mine came with a k&n. maybe i should have a look see at it.
_________________
(formerly) 1993 k1100rs

[Scott_Anderson]

The only time I would waste on a K&N is to remove it and replace it with a stock one as well.
_________________
Ride safe.



1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)

[Flying Duck]

But they have great marketing hype and you get a sticker!
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

[old guy old bike]

I took mine out this winter and replaced it with stock. It was apparent that it wasn't the cat's ass based on the crud in the bottom of the air box.
Jeff
_________________
1993 K1100LT
2003 K1200GT Gone but not forgotten
2014 Victory Crossraods

[abreeze]

they did dino tests and found no benifet using the k&n..

[Freedom45]

OK OK as such,


For Sale: - two K&N stickers, $.05 each, New
- one used K&N filter, $5.00
used only 100,000 miles
- one used K&N filter cleaning/oiling kit $5.00

or, will trade for new OEM air filter.

Ah, the power of the forum!!
_________________
1996 K1100RS SE, K1100K, K75S, Laverda 1200
MOA 9900
IBA #70 NRA

[Flying Duck]

I heard K&N is coming out with a deer whistle soon.

(I'm just having fun here. Freedom and I have been PMing and there's no bad blood between us.)
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

[robleyd]

[Beachcomber]

I fitted one to my K100RS project - absolutely no problems.

Ahh, maybe a different type of K&N ! never the less, works well and is cheap / simple to replace.

I've got a whole new system planned for my k1100RS Race Rep project where the filter housing is buried in the nose intake of the Yam R6 fairing.

[img][/img]
_________________
Beachcomber '93 K1100RS / '93 K1100LT and several K100's

[Freedom45]

Beachcomber: thanks for the pic of that interesting K. I hope to see more.

I've decided to retain the OEM air filter based on posts here and recommendations from several BMW service personnel in our area. The SW, especially here in Phoenix and The Valley, has an ultrafine powderlike dust that seems to permeate the K&N but is filtered by the stock filter.

I've looked at torn down K bike engines, high mileage ones, at two shops and the Nicasil (sp?) crosshatch pattern is still evident on two of those engines using stock filters, whereas, on one that was using K&N it is significantly less.

May not be a scientific conclusion, but, enough visual evidence for me.

Thanks for posting your comments and experiences.
_________________
1996 K1100RS SE, K1100K, K75S, Laverda 1200
MOA 9900
IBA #70 NRA

[blue95lt]

I feel if it can let more air in so can anything else
Stock has to be better tofilter out fine dust.
To the filters'capability.I'm.02centsw
_________________
1995 k1100lt daily ride(22953)when I got it
1982 cb650sc blue nighthawk (38000)(crashed)
1974 kz400(sold to get nighthawk)

[Phil Marvin]

Hi,
I think it was Don Eilenberger who did dyno testing with air filters on K-bikes. The runs were done with a new (stock) filter, NO filter, and a filter half blocked with plastic wrap. The dyno results were the same, showing that a filter (or lack of one) which can flow more air will not increase horsepower on the stock engine. I've also read where a well-respected mechanic (Tom Cutter comes to mind, but it may have been someone else) wrote that every time he looked into the intake tract of K&N equipped engines, there was a lot of fine dust/sand/abrasive particles which was not present with engines equipped with stock air filters.

I used a K&N for a while on my first K1100LT - maybe 20k miles. When I read of the dyno testing and the mechanic's comments, I removed the K&N and replaced it with a stock filter. What you do with your bike is your business; after all, it's your bike. My bikes have stock air filters on them and will continue to use the pleated paper air filters as long as I own them.
_________________
Ride Safe,
Phil Marvin in El Paso, TX
'94 K75A/3
'95 K75RTP

[m1ks]

[John Clauss]

[Beachcomber]