Author Topic: K&N vs. stock air filter  (Read 26044 times)

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Offline ekpent

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Re: K&N vs. stock air filter
« Reply #75 on: November 27, 2011, 02:41:03 PM »
Anyone who runs a stock style K/N know how to soften up the rubber on one?  (so it'll fit back in the box properly) Mine seems
like it shrunk slightly and needs to be streched out a little..

Try getting it warmed up real well with a heat gun on the rubber and mount while still toasty and soft.

Offline grcamna2

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Re: K&N vs. stock air filter
« Reply #76 on: November 27, 2011, 02:58:02 PM »
Anyone who runs a stock style K/N know how to soften up the rubber on one?  (so it'll fit back in the box properly) Mine seems
like it shrunk slightly and needs to be streched out a little..
The K&N company also makes some special heavy "sealing grease" meant for that;I've used it before in the 90's & it worked excellent for that...it was heavy enough to stay put. I think I still have some in storage if you can't find it.
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Re: K&N vs. stock air filter
« Reply #77 on: November 27, 2011, 06:46:20 PM »
Thanx guys, i'll keep those suggestions in mind.

Offline crazypj

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Re: K&N vs. stock air filter
« Reply #78 on: November 28, 2011, 09:43:24 AM »
Hard, objective ISO 5011 testing of K&N versus competitive filter media presented here --> http://home.roadrunner.com/~jbplock/ISO5011/SPICER.htm.

Rusty

 That's a pretty awesome set of tests.I'm going to 'steal' link and post on a bunch of sites  ;)
 K&N comes off as pretty crap really though.
 I don't mind doing top end re-builds  on most 4's (around 10,000mil intervals) but CB750 is something of a pain to lift engine out
 For long  engine life most aftermarket filters will be  a waste of time
« Last Edit: November 28, 2011, 09:45:42 AM by crazypj »
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bollingball

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Re: K&N vs. stock air filter
« Reply #79 on: November 28, 2011, 10:52:04 AM »
After reading this I may sell my new K&N and leave my stock Honda paper filter in a bit longer. I know I've been changing it to soon. I do wonder about the paper breaking down from time not dirt. Would that mean the filter sitting at the Honda shop for a year could be bad like tires. How long can one sit? I get a better price from my local Honda shop if I buy 3 or more. Is there a test of some sort to tell if it is to old non destructive? Just something else to worry about I am going to stop reading so much ;D

Offline Rigid

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Re: K&N vs. stock air filter
« Reply #80 on: November 28, 2011, 12:01:33 PM »
After hanging out on this site awhile, I have decided to replace my complete airbox and filter with new Honda OEM before each ride.  If the humidity is high, more frequently.  I will have to carry them with me so I have decided to wear a large back pack and have them sealed in airtight bags until the moment of deployment.  If I fumble the install and it takes more than 4 minutes, I will get a new one and try again. I also will change my oil each ride and drop the pan to look for bits of my cam tensioner.  I have already trimmed 1/4" off of my ignition leads about 12 times now so they are getting a little tight.  Lastly, I replace my tires when the little  "titties" wear off because you can never be too careful with those you know?  Who says sarcasm has no place here?   ;D
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Offline Tews19

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Re: K&N vs. stock air filter
« Reply #81 on: November 28, 2011, 12:29:24 PM »
After hanging out on this site awhile, I have decided to replace my complete airbox and filter with new Honda OEM before each ride.  If the humidity is high, more frequently.  I will have to carry them with me so I have decided to wear a large back pack and have them sealed in airtight bags until the moment of deployment.  If I fumble the install and it takes more than 4 minutes, I will get a new one and try again. I also will change my oil each ride and drop the pan to look for bits of my cam tensioner.  I have already trimmed 1/4" off of my ignition leads about 12 times now so they are getting a little tight.  Lastly, I replace my tires when the little  "titties" wear off because you can never be too careful with those you know?  Who says sarcasm has no place here?   ;D

Ha nice one, made me laugh
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Offline longshanks

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Re: K&N vs. stock air filter
« Reply #82 on: November 28, 2011, 12:30:15 PM »
After hanging out on this site awhile, I have decided to replace my complete airbox and filter with new Honda OEM before each ride.  If the humidity is high, more frequently.  I will have to carry them with me so I have decided to wear a large back pack and have them sealed in airtight bags until the moment of deployment.  If I fumble the install and it takes more than 4 minutes, I will get a new one and try again. I also will change my oil each ride and drop the pan to look for bits of my cam tensioner.  I have already trimmed 1/4" off of my ignition leads about 12 times now so they are getting a little tight.  Lastly, I replace my tires when the little  "titties" wear off because you can never be too careful with those you know?  Who says sarcasm has no place here?   ;D

+1   ;D
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Offline ekpent

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Re: K&N vs. stock air filter
« Reply #83 on: November 28, 2011, 12:50:17 PM »
After hanging out on this site awhile, I have decided to replace my complete airbox and filter with new Honda OEM before each ride.  If the humidity is high, more frequently.  I will have to carry them with me so I have decided to wear a large back pack and have them sealed in airtight bags until the moment of deployment.  If I fumble the install and it takes more than 4 minutes, I will get a new one and try again. I also will change my oil each ride and drop the pan to look for bits of my cam tensioner.  I have already trimmed 1/4" off of my ignition leads about 12 times now so they are getting a little tight.  Lastly, I replace my tires when the little  "titties" wear off because you can never be too careful with those you know?  Who says sarcasm has no place here?   ;D
What kind of oil and tires our you going to use ? Do you have points or electonic ignition.Remember if points adjust before each ride and file them a little.One last thing make sure you adjust that O-ring chain,you DO have an O-ring right  :)   8)
« Last Edit: November 28, 2011, 12:56:16 PM by ekpent »

Offline TwoTired

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Re: K&N vs. stock air filter
« Reply #84 on: November 28, 2011, 02:04:53 PM »
Don't forget the tire air cooler and the grease cooler for the swing arm and head bearings.  I hear the Australian ones operate on the principle of common sense.  I presume it's the same common sense that elects government leaders and appoints regulatory officials.  But, really such highly technical and precise matters just confuse me.

Anyone here ready to vote on changing the speed of light?   I figure we can explore the galaxy in a single generation if we just change that...
  ...and a few other inconvenient laws of physics.  (Fricken engineers and their rules. Listen to them and motorcycles/vehicles won't work at all.)

 ;D
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Offline Retro Rocket

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Re: K&N vs. stock air filter
« Reply #85 on: November 28, 2011, 02:08:44 PM »
Quote
  I hear the Australian ones operate on the principle of common sense.

You should try it sometime..... ;D ;D
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Offline TwoTired

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Re: K&N vs. stock air filter
« Reply #86 on: November 28, 2011, 03:19:07 PM »
Quote
  I hear the Australian ones operate on the principle of common sense.

You should try it sometime..... ;D ;D
Unfortunately, the definition changes with the Australian, and at their convenience at the time of decision. (Mostly just to support their viewpoint.)
I suspect that's probably why there aren't even any reliable examples to offer as a guideline, as you well know.

 ;D ;D
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Offline Retro Rocket

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Re: K&N vs. stock air filter
« Reply #87 on: November 28, 2011, 03:36:12 PM »
Quote
  I hear the Australian ones operate on the principle of common sense.

You should try it sometime..... ;D ;D
Unfortunately, the definition changes with the Australian, and at their convenience at the time of decision. (Mostly just to support their viewpoint.)
I suspect that's probably why there aren't even any reliable examples to offer as a guideline, as you well know.

 ;D ;D

Actually, like most other things, i suspect the changes occur when it becomes Americanised.... ;)   I have NEVER seen a bike fail because it had an oil cooler, actually, i doubt anyone has.  But i digress, Your sarcasm is expected, don't drag our country into it, if you wish to bash Australia mate expect us to come out swinging, thats the way we do it down here....... 8) ....

Nothing happening here folks, back to your normal programing......... ;D ;D :P
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Re: K&N vs. stock air filter
« Reply #88 on: November 28, 2011, 03:47:34 PM »
Well so much for being serous. However I would replase worn out titties :o

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Offline TwoTired

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Re: K&N vs. stock air filter
« Reply #89 on: November 28, 2011, 04:17:07 PM »
Actually, like most other things, i suspect the changes occur when it becomes Americanised.... ;)   I have NEVER seen a bike fail because it had an oil cooler, actually, i doubt anyone has.  But i digress, Your sarcasm is expected, don't drag our country into it, if you wish to bash Australia mate expect us to come out swinging, thats the way we do it down here....... 8) ....

Nothing happening here folks, back to your normal programing......... ;D ;D :P
HA!  And I have NEVER seen a bike fail only because it didn't have an oil cooler, most certainly not a stock one.  And, I doubt you have either, not that you'd ever admit it.  That wouldn't help you sell them, now, would it?

Seems to have always been ok for you to bash the US with abandon.  But, as usual your standards, as well as your "common sense", change with the prevailing winds.

If I have a dim view of certain Australians (I certainly didn't bash Australia as a whole), it's this forum that convinced me of that viewpoint, as that is the only (regrettable) interaction I've had in recent years.  All previous interaction with Aussies was and had been positive.  I suspect, though, that it is just a few of the loud and boisterous that soiled the pool.
No doubt you'll continue with your double standards, as you always have.
 ;) 

Nothing ever really happens when you post RR.   :P
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Offline raymond10078

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Re: K&N vs. stock air filter
« Reply #90 on: November 28, 2011, 04:28:07 PM »
I, for one, have found the technical content in this thread quite helpful.

I am one of those K&N owners, not because of K&N claims/ads, but due to some ebay (and other) sellers that appear to print "fake" Honda part numbers on labels and sells parts as official Honda parts.  My ebay-sourced air filter was not a Honda part.

I thought I could trust K&N.  Based on the technical content presented here, I think it appropriate to source a filter from Honda directly.
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Past bikes - Honda: SL350, CX650C, CB900C, CB1000C, CM450A; Kawasaki: several 1972 750 H2's; Suzuki: TC90J.

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Offline Retro Rocket

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Re: K&N vs. stock air filter
« Reply #91 on: November 28, 2011, 05:40:56 PM »
Actually, like most other things, i suspect the changes occur when it becomes Americanised.... ;)   I have NEVER seen a bike fail because it had an oil cooler, actually, i doubt anyone has.  But i digress, Your sarcasm is expected, don't drag our country into it, if you wish to bash Australia mate expect us to come out swinging, thats the way we do it down here....... 8) ....

Nothing happening here folks, back to your normal programing......... ;D ;D :P
HA!  And I have NEVER seen a bike fail only because it didn't have an oil cooler, most certainly not a stock one.  And, I doubt you have either, not that you'd ever admit it.  That wouldn't help you sell them, now, would it?

Seems to have always been ok for you to bash the US with abandon.  But, as usual your standards, as well as your "common sense", change with the prevailing winds.

If I have a dim view of certain Australians (I certainly didn't bash Australia as a whole), it's this forum that convinced me of that viewpoint, as that is the only (regrettable) interaction I've had in recent years.  All previous interaction with Aussies was and had been positive.  I suspect, though, that it is just a few of the loud and boisterous that soiled the pool.
No doubt you'll continue with your double standards, as you always have.
 ;) 

Nothing ever really happens when you post RR.   :P

And you think you help us think any better about you lot. I have had plenty of dealings with Americans {and always will} and most have been excellent, i certainly wouldn't be so stupid as to tar everyone with the same brush. Good to see you are up too your usual bullsh1t Lloyd, and it really surprises me that you think what you go on with is deemed by others as acceptable. You entered this thread just to get a bite as your post was stupid at best and pathetic at worst, and offered nothing practical  to this debate at all, at least you are consistent. I do not bash the US with abandon Lloyd, just point out at times, what is glaringly obvious to everyone else including your American friends.
It seems that you just can't help yourself and just have to come out every now and again and be a dip sh1t, take your medicine and grow some balls mate.....

Sorry about the hijack guys but i get a bit sick of this "holier than thou" attitude on display here.... and judging by some of the PM's i have received, i am not the only one.... ::)
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Offline Xnavylfr

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Re: K&N vs. stock air filter
« Reply #92 on: November 28, 2011, 06:18:58 PM »
I'm new to this forum but I've been around bikes since 1965 so I'll just say I have general knowledge of the operations of 1. In post #54 it was stated that K&N filtered 99% of OEM and OEM filtered 99.8% of the particulates. So If someone had done the math 99%x99.8=89.82% (BECAUSE 99.8 IS 100% of the airflow measured!!! If these calculations are correct then K&N are NOT the better filter!
 In the same aspect everybody doesn't like driving the same cars , the same for BIKES. Some people want 100% original mostly just to be able to SAY that it is. If you make any changes to the AIRFLOW in and out you WILL gain in performance the only reason the STOCK air box works is because it restricts the flow of air by it shape and it's shape fits perfect on that stock bike! SHOW ME ANY RACE BIKE WITH A STOCK AIR BOX , you won't find one. A bike pulls a VERY small amount of air at idle the higher the RPM,s the greater the airflow has to be and in that situation the K&Ns are the better choice because they allow better airflow. I'm more into the PERFORMANCE side of the coin, if the whole BIKE/AUTO industry hadn't advanced with technology ( we will compare from the 60s)we would all be in 350HP/400HP cars running on 100 octane gas and getting 8 MPG instead we have some 2 liter car engines/FI/turbo getting almost 300 HP on 86 octane gas getting 30 MPG and 1100cc BIKES that can go 0 to 60 MPH in 2.5 seconds. I'm sorry you haven't seen these advances as CHANGE to the better. You need to heat shrink some STEEL rings on those WOODEN cart wheels world you're living in, it will make them last longer!! Comparing a stock configured SOHC CB750 bike to CB750 SOHC CAFE STYLE and saying they perform the same is like comparing a VIRGIN to an experienced CALL GIRL they can both give you a ride but 1 just moves BETTER and gives a BIGGER thrill!!

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Re: K&N vs. stock air filter
« Reply #93 on: November 28, 2011, 06:19:31 PM »
Actually, like most other things, i suspect the changes occur when it becomes Americanised.... ;)   I have NEVER seen a bike fail because it had an oil cooler, actually, i doubt anyone has.  But i digress, Your sarcasm is expected, don't drag our country into it, if you wish to bash Australia mate expect us to come out swinging, thats the way we do it down here....... 8) ....

Nothing happening here folks, back to your normal programing......... ;D ;D :P
That wouldn't help you sell them, now, would it?
When did you start selling oil coolers, Retro??
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Offline WarwickE36

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Re: K&N vs. stock air filter
« Reply #94 on: November 28, 2011, 06:30:46 PM »
" Why does anyone get offended by what someone does to their own bike? I dont get it. "

You made me think about it after I cheered knowing someone else would like to know what these control freaks are up to.
 Every time any owner strips whatever precious Honda part the horrified purists parts go up in value. That's not the part that bothers them.
 What bothers them is they sat up late at night, their breast full of wonder and estrogen, unable to sleep, dreaming about their lovely darling and all her glory... and next thing you know someone else doesn't share their emotional deluge and their reaction is they must spread their mind museum as far as they possibly can, taking over as much of the real world as possible.

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Offline crazypj

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Re: K&N vs. stock air filter
« Reply #95 on: November 28, 2011, 06:43:39 PM »
Wow, I don't believe the way this thread is going  :o
I guess the underlying effect of world recession is making everyone irritable? (there has to be some reason for the current exchange?)
I never expected this sort of stuff on SOHC forum
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Re: K&N vs. stock air filter
« Reply #96 on: November 28, 2011, 06:57:45 PM »
Wow, I don't believe the way this thread is going  :o
I guess the underlying effect of world recession is making everyone irritable? (there has to be some reason for the current exchange?)
I never expected this sort of stuff on SOHC forum
It seems to happen every time a certain person chimes in on a pod/air filter/velocity stack/oil cooler thread. >:(
Don't fix it if it ain't broke!
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Re: K&N vs. stock air filter
« Reply #97 on: November 28, 2011, 07:56:19 PM »
Wow, I don't believe the way this thread is going  :o
I guess the underlying effect of world recession is making everyone irritable? (there has to be some reason for the current exchange?)
I never expected this sort of stuff on SOHC forum
It seems to happen every time a certain person chimes in on a pod/air filter/velocity stack/oil cooler thread. >:(

Exactly, and i and many others are completely sick of hearing irrelevant, bloated, arrogant rubbish this bloke spews.
He is just a sour bitter old prick that only chimes in in a thread i am in just to start trouble.  I could easily dredge up the last few, its all the same old sh1t, then starts using labels to try and offend, funny thing is i am not offended, actually its quite humorous and sad, all at once. Once again your tirade is immature and pathetic.....as i expected.... I have always said that intelligence doesn't make you smart and it looks like we now have a poster boy..... ;D ;D
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Re: K&N vs. stock air filter
« Reply #98 on: November 28, 2011, 08:12:32 PM »
Quote
I'm quite tired of just taking your senseless and petty bashing.

 ;D ;D ;D Only for you Lloyd, only for you....Wasn't a problem till you turned up.....

Scott, i think senility has set in, thats Terry doing the selling... oops shouldn't have mentioned Terry either, he's another Aussie that Lloyd just can't stand.... ;D ;D  I better go before i take advantage of someone else.... ::)
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Offline ekpent

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Re: K&N vs. stock air filter
« Reply #99 on: November 28, 2011, 08:15:34 PM »
So lets try and wrap this up with a conclusion to original poster Longshanks question as to whether the $50.00 K&N is a better option for HIM than the $10.00 stock filter for HIS new airbox.  I will side in this case that he should save his money and buy the stock $10.00 filter and know that for the life of the filter, which depending on his driving conditions could be quite long,may do a slightly better job of protecting his engine.  Somewhere along the line he may get a deal on a used K&N that he will be able to experiment with.   Anybody second that opinion
« Last Edit: November 28, 2011, 08:18:11 PM by ekpent »