K&N Air Filter Queries and Doubts

[s1d]

Sorry for the late reply ! I saw it and did a little research and found that Roller weights and slider weights.... What is difference between them ?

And if you Increase or Decrease The weights of the rollers what effect it give corresponingly ?

And thanks again Cheers

if you read that link you would understand the effects of changing the weights of the rollers.
rollers/sliders - different name same thing/function. but yes, rollers are the round ones(that come as stock) and slider's are the ones that have a flat side (like dr.pulleys slides), and there is a lot of debate on the advantages of sliders vs rollers (guess its like the coffee bite argument) - i haven't had any issues with the rollers & haven't used the sliders so cant comment on them.
rollers are easier to procure and cheaper than sliders. the trick is to find the correct combo of roller weights and clutch springs for a nippier pickup without affecting the 'top end'. (because if your clutch springs/shoes are worn out and you experiment with the rollers you might not get as good a result as with a clutch in proper condition)

check this out http://www.youtube.com/watch?v=9TnkUIecRE4
this is exactly how its looks and functions, if you notice at 11s on this video you will see the clutch engaging with the clutch bell(the outer thing that you see rotating) the engine spins up initially (the front is the variator mechanism with has the rollers) and only at a certain rpm ( what you do by changing the roller weights is changing this rpm) the clutch engages and thus transferring power to the rear wheel)

[EvilizedDead]

if you read that link you would understand the effects of changing the weights of the rollers.
rollers/sliders - different name same thing/function. but yes, rollers are the round ones(that come as stock) and slider's are the ones that have a flat side (like dr.pulleys slides), and there is a lot of debate on the advantages of sliders vs rollers (guess its like the coffee bite argument) - i haven't had any issues with the rollers & haven't used the sliders so cant comment on them.
rollers are easier to procure and cheaper than sliders. the trick is to find the correct combo of roller weights and clutch springs for a nippier pickup without affecting the 'top end'. (because if your clutch springs/shoes are worn out and you experiment with the rollers you might not get as good a result as with a clutch in proper condition)

check this out Scooter variator - operation principle - YouTube
this is exactly how its looks and functions, if you notice at 11s on this video you will see the clutch engaging with the clutch bell(the outer thing that you see rotating) the engine spins up initially (the front is the variator mechanism with has the rollers) and only at a certain rpm ( what you do by changing the roller weights is changing this rpm) the clutch engages and thus transferring power to the rear wheel)

Hum Hum ! I see ! Got it now !!! if I Reduce down the weight or the Variator it will spin faster giving off better acceleration ! And if I over do the weight I'd get more top Speed And Do you know the Weight of the Aviator's rollers ? And I saw Dr.Pulleys also They are nice btw

And one more Question about it ! If I do change these weights And get K&N filter Will the performance Increase ( Marginally of course )..

Thanks !

[s1d]

Hum Hum ! I see ! Got it now !!! if I Reduce down the weight or the Variator it will spin faster giving off better acceleration ! And if I over do the weight I'd get more top Speed And Do you know the Weight of the Aviator's rollers ? And I saw Dr.Pulleys also They are nice btw

And one more Question about it ! If I do change these weights And get K&N filter Will the performance Increase ( Marginally of course )..

Thanks !

i do not know the weight of the aviator's rollers (but i assume it will be either 10g or 11g) and another thing to remember when you buy after market rollers is their dimensions, for eg. 16x13 is the dio's dimension. you do not want to buy the right weight but wrong size
the advantage i have with the dio is i can compare the parts with the UK model (called the honda scv 100 lead, which is the dio that is/was imported to UK)
doing the mod you mentioned(with 1 gram lower weights) will give you a bit of a push at low end (if you just richen the mixture without upjetting)

[EvilizedDead]

i do not know the weight of the aviator's rollers (but i assume it will be either 10g or 11g) and another thing to remember when you buy after market rollers is their dimensions, for eg. 16x13 is the dio's dimension. you do not want to buy the right weight but wrong size
the advantage i have with the dio is i can compare the parts with the UK model (called the honda scv 100 lead, which is the dio that is/was imported to UK)
doing the mod you mentioned(with 1 gram lower weights) will give you a bit of a push at low end (if you just richen the mixture without upjetting)

Hehe ! True That about size ! I think I will have to open it and sit and remember how to use Verneer learned in Physics's lab hehe ! And of the up jetting.. I told my local mech that if i can source the bigger jets in carb.. He just plainly refused that there's no such thing as bigger jets for carb and they just come in a standard size for all vehicals ( I know that he's wrong in this topic bt anyways its good to get some knowledge )
.. How can i get my hands on the bigger jets for my aviator and, what is the standard size of the jet !?

[s1d]

Hehe ! True That about size ! I think I will have to open it and sit and remember how to use Verneer learned in Physics's lab hehe ! And of the up jetting.. I told my local mech that if i can source the bigger jets in carb.. He just plainly refused that there's no such thing as bigger jets for carb and they just come in a standard size for all vehicals ( I know that he's wrong in this topic bt anyways its good to get some knowledge )
.. How can i get my hands on the bigger jets for my aviator and, what is the standard size of the jet !?

you can't blame the mech poor fella just trying to make a living and you question them about 'jetting' etc' ..
you need to run around the shops/mechs to find a source of bigger jets & i do not know the jet sizes (i once asked my mech 4yrs ago, if he would advice upjetting my dio, and he said 'why sir it will only reduce the mileage, the dio is already a zabardast scoot dont mess with it) - and to this day i have kept it stock and loving it. But now its time to replace the roller's and i will be trying various combinations.. desperately need to get hold of a proper tool kit

[prince18th]

Pls don't try having any kind of performance filters for such vehicles..i had hp filter on my activa for 4 months..pick up felt good(didn't know is it cause of the sound)..makes a lot of sound..And in the end had to get my engine opened..camshaft connecting rods had developed cracks and valves also had some issues after i took off the filter the activa feels like a beauty to ride on..smooth engine decent acceleration and a very silent note(especially after the filter removal)

[EvilizedDead]

you can't blame the mech poor fella just trying to make a living and you question them about 'jetting' etc' ..
you need to run around the shops/mechs to find a source of bigger jets & i do not know the jet sizes (i once asked my mech 4yrs ago, if he would advice upjetting my dio, and he said 'why sir it will only reduce the mileage, the dio is already a zabardast scoot dont mess with it) - and to this day i have kept it stock and loving it. But now its time to replace the roller's and i will be trying various combinations.. desperately need to get hold of a proper tool kit

heh ! I want to just get my rollers changed ( Or eevne better I will change them ) As of upjetting, I can do some variations in my fuel mixture and turn it in a little rich.. And as of stock My Fellow ASC's asses did a great job on screwing ALL the Stock~ness in just First free service Anyhoo... Thankyou for the help ! and Let me know if you do some modding in your Dio !

Regards

Pls don't try having any kind of performance filters for such vehicles..i had hp filter on my activa for 4 months..pick up felt good(didn't know is it cause of the sound)..makes a lot of sound..And in the end had to get my engine opened..camshaft connecting rods had developed cracks and valves also had some issues after i took off the filter the activa feels like a beauty to ride on..smooth engine decent acceleration and a very silent note(especially after the filter removal)

Prince 18th I highly doubt that adding a freeflow Filter to Activa or Aviator can cause such damage to the interior of the engine... What your mech told you when he checked the cause of it ? Was it JUST the airfilter or something else too ?

Thankyou !

Pls don't try having any kind of performance filters for such vehicles..i had hp filter on my activa for 4 months..pick up felt good(didn't know is it cause of the sound)..makes a lot of sound..And in the end had to get my engine opened..camshaft connecting rods had developed cracks and valves also had some issues after i took off the filter the activa feels like a beauty to ride on..smooth engine decent acceleration and a very silent note(especially after the filter removal)

Prince 18th I highly doubt that adding a freeflow Filter to Activa or Aviator can cause such damage to the interior of the engine... What your mech told you when he checked the cause of it ? Was it JUST the airfilter or something else too ?

Thankyou !

[ch.madhur]

K&N filter for pulsar 135

can anyone brief me about the k&N filter for pulsar 135, one of my friend need it in his bike.
One of the dealer say it does not come for 135, install the filter of 150 in it, it will run ok with it.
is it ok to install that or what option i should go for ?

[harsh7827]

Yamaha FZ with K&N Filter

My Yamaha FZ turns 2 next month. I got a K&N air filter fitted today at a local Castrol Bike Zone. He didnt do tuning or anything else. He just fitted it near the carb and removed a somewhat L Shaped black part. Did he fit it correctly? I googled and found that tuning is required. What tuning is required. Can i do it by my self. I am a newbie so detailed instruction would be much better.
Thank You.

[antz.bin]

can anyone brief me about the k&N filter for pulsar 135, one of my friend need it in his bike.
One of the dealer say it does not come for 135, install the filter of 150 in it, it will run ok with it.
is it ok to install that or what option i should go for ?

My Yamaha FZ turns 2 next month. I got a K&N air filter fitted today at a local Castrol Bike Zone. He didnt do tuning or anything else. He just fitted it near the carb and removed a somewhat L Shaped black part. Did he fit it correctly? I googled and found that tuning is required. What tuning is required. Can i do it by my self. I am a newbie so detailed instruction would be much better.
Thank You.

Threads Approved and Merged

[Aviraj Singh]

problems after installing k&n air filter

two days ago i installed k&N air filter to my bike suzuki GS150r . having problems with rejetting the carburettor . please help me . it has no problem on idle and mid range .
problem starts when rpm is above 6000 . at some moments there is kind of lag . Please

[antz.bin]

Thread Approved and Merged

[Aviraj Singh]

I have installed k&n air filter in my suzuki gs 150r . Having problems with carb tunning. less power in the range of 6000rpm to 8000rpm . below it and above it is awesome. yand it runs out of power at 102 kmph . should i go for changing jets . if yes which one??

[rx_rider]

problems you'll face with k&n :-
the universal air filter (conical type) which probably you have in mind to fit on your bike makes the mixture too lean with the default carb settings

Yes, I too would agree with this one. I have a Leo Vince exhaust. When Leo Vince was installed, I had UNI filters. The exhaust sound was amazing. It would turn heads for sure. But the day I replaced it with K&N, the exhaust sound became weaker and did not live upto my expectation.

I am now considering if I should adjust the fuel-air ratio, or should I simple go back to using UNI filter.

[bobisbacktorock]

K&N

I hope many of the guys here heard about & are very much keen to know bout K&N filters. So what exactly is this K&N?? K&N is a brand name of a filter manufacturing company. They claim to manufacture "free flow" filters. By "free flow" , they refer to more air being pumped into the engine easily. So what is the result?
1- More air means more oxygen.
2-more oxygen means more combustion .....right??

WRONG!!

An engine is essentially an air pump. You can try to bring as much air as you want through the intake, but the engine is only going to take in what it can exhaust. So if the exhaust can't push the amount of air that the intake can pull....guess what? You've just wasted your money.

Secondly ...oxygen is not going to burn by itself!!... U have to feed your engine with sufficient fuel in order to get the maximum output.

Thirdly... the company has designed the bike's air filter such a way to allow maximum air inside the combustion chamber. So any further volume of air ...without that much of fuel is not helping you in any way. So that means it you increase the fuel , u are compromising on your bike's mileage!!

What bout the SOUND???

The sound you will hear from K&N filter installed bike's & cars is commonly known as "induction sound"... which is "undesirable" and companies try their best to dampen such sounds. That is why your stock filter is placed inside a box.

So when you a K&N is installed , people usually remove the air filter box.. this results in the induction sound that people are so fond of. The point is even if you install your stock filter outside the box , it makes the same sound!! TRY IT!! And also if you install a k&N inside the filter box , you are no way going to enjoy the K&N sound

POWER??

K&N are said to deliver a little bit of more power than the stock filters. Now the question is a ..the bikes are just 11-20BHP engine...so if you are expecting the bike to produce 2 - 3 BHP extra with the k&N ...then tell me why the hell company did not do that?? Confused?

Filter BOX REMOVAL??

It is recommended to remove the filter box when installing a K&N. This is marketing , basically. the inlet of the filter box has an opening of a certain area that is more than enough for the engine's air intake per cycle. So whether the filter is outside the box or inside...its practically the same.

So why K&N ??

K&N are used in very high performance engines which are capable of produceing 100+ BHP ..and at those levels , it makes some significant difference. Its basic use is in racing or rally cars & bikes...where even a 2 BHP matters a lot!!

CONCLUSION???
Its you who decides .... GOOD LUCK!!