DAM K&N
Thread Starter
Senior Member
Superstock
Joined: Sep 2013
Posts: 460
From: Costa Mesa, CA
DAM K&N
I acquired a K&N filter with my SH when I purchase it years ago. I, like many others, was never able to get it to run just right with it so I went with 8451 Hawks guidelines with an OEM filter and have loved it for over 30k miles. I've read everything from K&N's causing turbulence to slide flutter. What ever the cause, I was looking at my unused K&N, and was bored, I decided to fabricate a dam/baffle similar to what is part of the OEM filter. So now it's like the stocker in configuration. Only the element is different. I did a half dozen plug chops and settled on an additional .20 additional spacer under the OEM needles and a 1/4 turn out on the fuel screws and it seemed okay. I took 'er for a 320 mile test ride today. the ride was a combination of 215 hilly curves and a 105 mile of freeway. Going from sea level to 7350 ft. elevation and back. Temps varied from 59 - 93 degree. Amazingly I found no noticeable flat spots or other carburation glitches! It "seemed" to run better at all rev ranges and altitudes. When my local dyno ban (long story) is over I'll see what the reality is. Another plus is that that YLOD doesn't come on until about 115 mi. I do run a 19 liter tank. so I picked up about 10% better mileage. It's apparent that I'm running leaner, but it's barely detectable on the plugs after 6 readings on new plugs. I readying a set of extra head pipes with bungs for AFR readings out of each cylinder rather than the (mixed) tail pipes. So, Dam the K&N! It works, for me. I should mention that I have Two Brothers Head Pipes, Yosh slip-ons, Dr. Honda stacks, TPS @500 ohms, 48 pilots, 175 frt. & 178 rr. mains, Shimmed OEM needles with 2 lift holes in stock slides.
Member
Squid
Joined: Feb 2019
Posts: 66
I acquired a K&N filter with my SH when I purchase it years ago. I, like many others, was never able to get it to run just right with it so I went with 8451 Hawks guidelines with an OEM filter and have loved it for over 30k miles. I've read everything from K&N's causing turbulence to slide flutter. What ever the cause, I was looking at my unused K&N, and was bored, I decided to fabricate a dam/baffle similar to what is part of the OEM filter. So now it's like the stocker in configuration. Only the element is different. I did a half dozen plug chops and settled on an additional .20 additional spacer under the OEM needles and a 1/4 turn out on the fuel screws and it seemed okay. I took 'er for a 320 mile test ride today. the ride was a combination of 215 hilly curves and a 105 mile of freeway. Going from sea level to 7350 ft. elevation and back. Temps varied from 59 - 93 degree. Amazingly I found no noticeable flat spots or other carburation glitches! It "seemed" to run better at all rev ranges and altitudes. When my local dyno ban (long story) is over I'll see what the reality is. Another plus is that that YLOD doesn't come on until about 115 mi. I do run a 19 liter tank. so I picked up about 10% better mileage. It's apparent that I'm running leaner, but it's barely detectable on the plugs after 6 readings on new plugs. I readying a set of extra head pipes with bungs for AFR readings out of each cylinder rather than the (mixed) tail pipes. So, Dam the K&N! It works, for me. I should mention that I have Two Brothers Head Pipes, Yosh slip-ons, Dr. Honda stacks, TPS @500 ohms, 48 pilots, 175 frt. & 178 rr. mains, Shimmed OEM needles with 2 lift holes in stock slides.
Thread Starter
Senior Member
Superstock
Joined: Sep 2013
Posts: 460
From: Costa Mesa, CA
VTRsquid, I got temporarily banned from the local dyno because myself, and a couple of other old guys, were paying the guy who ran the dyno a few bucks to let us test the tuning of our bikes. The problem was that we could only do it when the business owner was out of town. Well, long story endless, he got caught trying to retrieve some printouts for us and the owner got rather pissed and rightfully so. He missed out on a lot of chargeable hours @ $150 per hour. The group got together and pleaded with the owner to let him keep his job. He bought it with the conditions that we could not use his dyno until we paid for all the hours we had used! In fact he asked us not to step foot on the premises until we did. I don't know about the others, but since 2016 I've used at least 20 hours! Do the math.
VTR1000F, ….NVM
VTR1000F, ….NVM
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MotoGP
Joined: Jul 2007
Posts: 5,214
From: Gettysburg, Pa
I ran a K&N for years with great results. Never wrote down what I did exactly to the carbs, next time I'm in there I'll have to. I posted here but don't feel like spending hours of my time trying to search for it. Like mentioned, I was tickled for years, then I went and set the TPS near 500 and it took a turn for the worse. Can't explain why, but I ended up buying a HiFlo brand filter and slapping it in. I got a little better, so I backed the tps off to about 520 and left it there. One of these days I'll get back to the K&N.
Senior Member
Superstock
Joined: Jul 2018
Posts: 277
From: Champaign, IL
I've used K&N filters on all sorts of vehicles...in the beginning I found I was being to **** retentive and cleaning them too often...seem to need a bit of restriction to work properly, otherwise jet like you're not running any filters at all...
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SuperSport
Joined: Jul 2018
Posts: 565
AV
Senior Member
SuperBike
Joined: Sep 2008
Posts: 1,707
From: Essex, UK
Mine is fitted with a K&N after setting up professionally with a several dyno runs and rejetting way back in 2001 - since then just needed every couple of years servicing with a cleaner spray and reoiling with recommnded oil.
https://www.knfilters.com/cleaning.htm
https://www.knfilters.com/cleaning.htm
Thread Starter
Senior Member
Superstock
Joined: Sep 2013
Posts: 460
From: Costa Mesa, CA
Yup, I run K&Ns in all my street vehicles (5) and now in my SH. A little pricey at the outset but way worth it in the long run. Treat them as they are designed and I can go lots of miles between services. Even when they appear dirty they still flow great.
Member
Squid
Joined: Feb 2019
Posts: 66
Yeah I had good luck ditching the pipercross filter my bike came with in favour of an OEM. Its got smooth torque all over the place now. Pretty sure my bike was dealer fitted with the Yoshi pipes and jetted as a package. Seems like a lot of unnecessary agro trying to rejett a bike for an extra 5hp through trial and error unless you enjoy the process.
VTR virgin
Superstock
Joined: Mar 2015
Posts: 447
From: Auckland, New Zealand
I too have had K&N in many bikes, and I put one in my VTR when I first bought it, and before I read that it would be a bad idea. My VTR runs beautifully, super smooth idle and pick-up, completely glitch-free. I have reset the TPS to 500, carbs are stock, I have gutted stock mufflers and I do my own carb balancing regularly.
Thread Starter
Senior Member
Superstock
Joined: Sep 2013
Posts: 460
From: Costa Mesa, CA
And yes, VTR tanks can be tilted without disconnecting any lines. Makes it easy to service, sync, pull carbs Etc.
Last edited by CaryDG; Jun 15, 2019 at 03:41 PM. Reason: wrong information
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