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+--- Thread: k&n are they worth it? (/showthread.php?tid=71501)
Re: k&n are they worth it? - RMT1983 - 09-02-15
Buy Mine!!!! lol
Re: k&n are they worth it? - Paulfzs - 09-02-15
(09-02-15, 10:20 PM)RMT1983 link Wrote: Buy Mine!!!! lol
Ill pay the postage for it
you can chuck the tank bolt in too with your address ill send the mountain of bubble wrap back
Re: k&n are they worth it? - Punkstig - 10-02-15
I'm currently in possession of farjo's carbtune which you're welcome to use, but you'd have to come visit!
Re: k&n are they worth it? - unfazed - 10-02-15
The filter in the photograph is age and petrol fumes discoloured making it look worse than it actually is, therefore having little effect on the running. A bad filter will only effect the running at 10 to 13000 revs and then get progressively worse lower down the rev range as the filter continues to get dirtier. :eek
If you do not regularly use the bike above 10000 revs then the difference in the filter you had and a new one would not be really noticeable. :rolleyes
However what you would notice with the K&N is a slightly better throttle response throughout the rev range and a little less vibration. If you do not notice these changes then you most likely do not rev much above its 7000 power band :pokefun
Re: k&n are they worth it? - unfazed - 10-02-15
(10-02-15, 12:23 AM)Punkstig link Wrote: I'm currently in possession of farjo's carbtune which you're welcome to use, but you'd have to come visit!
Does Farjo know you are renting it out while he is away :lol
Re: k&n are they worth it? - fazersharp - 10-02-15
(10-02-15, 12:27 AM)unfazed link Wrote: The filter in the photograph is age and petrol fumes discoloured making it look worse than it actually is, therefore having little effect on the running. A bad filter will only effect the running at 10 to 13000 revs and then get progressively worse lower down the rev range as the filter continues to get dirtier. :eek
If you do not regularly use the bike above 10000 revs then the difference in the filter you had and a new one would not be really noticeable. :rolleyes
However what you would notice with the K&N is a slightly better throttle response throughout the rev range and a little less vibration. If you do not notice these changes then you most likely do not rev much above its 7000 power band :pokefun
Now I am convinced
Re: k&n are they worth it? - bigbluebear - 10-02-15
The other alternative is a Pipercross.....Mike fitted these for the Ivanising of us Scottish Foccers so they must be as good as the K&N but a bit cheaper.
Re: k&n are they worth it? - darrsi - 10-02-15
(10-02-15, 11:55 AM)bigbluebear link Wrote: The other alternative is a Pipercross.....Mike fitted these for the Ivanising of us Scottish Foccers so they must be as good as the K&N but a bit cheaper.
£2 cheaper, but the K&N nabs the vote for the first 50,000 mile cleaning interval.
Re: k&n are they worth it? - tony_d123 - 11-02-15
K&N's flow more air how? The surface area of the pleats is no better than a paper filter so obviously the material flows more air i.e. they have bigger holes. There was an article in Classic Mechanics last year on air filters and they shone a bright light through a K&N and a paper filter. There were very noticeable visible light holes in the K&N, if you can see them then dust and grit can get through.
So its a trade off between possible slightly better performance (dependent on many other variables) or longer engine life. You pays your money and you takes your choice
Re: k&n are they worth it? - darrsi - 11-02-15
(11-02-15, 10:12 PM)tony_d123 link Wrote: K&N's flow more air how? The surface area of the pleats is no better than a paper filter so obviously the material flows more air i.e. they have bigger holes. There was an article in Classic Mechanics last year on air filters and they shone a bright light through a K&N and a paper filter. There were very noticeable visible light holes in the K&N, if you can see them then dust and grit can get through.
So its a trade off between possible slightly better performance (dependent on many other variables) or longer engine life. You pays your money and you takes your choice
You realise you're talking to people with 12-17yr old bikes that are still going strong? :lol
Re: k&n are they worth it? - Paulfzs - 11-02-15
(11-02-15, 10:55 PM)darrsi link Wrote: [quote author=tony_d123 link=topic=15923.msg183182#msg183182 date=1423689155]
K&N's flow more air how? The surface area of the pleats is no better than a paper filter so obviously the material flows more air i.e. they have bigger holes. There was an article in Classic Mechanics last year on air filters and they shone a bright light through a K&N and a paper filter. There were very noticeable visible light holes in the K&N, if you can see them then dust and grit can get through.
So its a trade off between possible slightly better performance (dependent on many other variables) or longer engine life. You pays your money and you takes your choice
You realise you're talking to people with 12-17yr old bikes that are still going strong? :lol
[/quote]
mines on its 3rd engine!!
1 change by me
Re: k&n are they worth it? - unfazed - 12-02-15
(11-02-15, 11:01 PM)Paulfzs link Wrote: [quote author=darrsi link=topic=15923.msg183185#msg183185 date=1423691715]
[quote author=tony_d123 link=topic=15923.msg183182#msg183182 date=1423689155]
K&N's flow more air how? The surface area of the pleats is no better than a paper filter so obviously the material flows more air i.e. they have bigger holes. There was an article in Classic Mechanics last year on air filters and they shone a bright light through a K&N and a paper filter. There were very noticeable visible light holes in the K&N, if you can see them then dust and grit can get through.
mines on its 3rd engine!!
1 change by me
[/quote]
Mines on its first and now with 86000miles and a K&N in it since its second oil and oil filter change at 4000 miles.
The reason K&N use oil on their filters is to trap the dirt. Well documented fact :lol [/quote]
Re: k&n are they worth it? - midden - 12-02-15
(11-02-15, 11:01 PM)Paulfzs link Wrote: [quote author=darrsi link=topic=15923.msg183185#msg183185 date=1423691715]
[quote author=tony_d123 link=topic=15923.msg183182#msg183182 date=1423689155]
K&N's flow more air how? The surface area of the pleats is no better than a paper filter so obviously the material flows more air i.e. they have bigger holes. There was an article in Classic Mechanics last year on air filters and they shone a bright light through a K&N and a paper filter. There were very noticeable visible light holes in the K&N, if you can see them then dust and grit can get through.
So its a trade off between possible slightly better performance (dependent on many other variables) or longer engine life. You pays your money and you takes your choice
You realise you're talking to people with 12-17yr old bikes that are still going strong? :lol
[/quote]
mines on its 3rd engine!!
1 change by me
[/quote]
Just for the record and possible future reference: should the 'engine' be comparable to the broom head, or the broom handle?
Re: k&n are they worth it? - darrsi - 12-02-15
(11-02-15, 11:01 PM)Paulfzs link Wrote: [quote author=darrsi link=topic=15923.msg183185#msg183185 date=1423691715]
[quote author=tony_d123 link=topic=15923.msg183182#msg183182 date=1423689155]
K&N's flow more air how? The surface area of the pleats is no better than a paper filter so obviously the material flows more air i.e. they have bigger holes. There was an article in Classic Mechanics last year on air filters and they shone a bright light through a K&N and a paper filter. There were very noticeable visible light holes in the K&N, if you can see them then dust and grit can get through.
So its a trade off between possible slightly better performance (dependent on many other variables) or longer engine life. You pays your money and you takes your choice
You realise you're talking to people with 12-17yr old bikes that are still going strong? :lol
[/quote]
mines on its 3rd engine!!
1 change by me
[/quote]
What are you doing to the poor thing?
Re: k&n are they worth it? - tony_d123 - 12-02-15
(11-02-15, 10:55 PM)darrsi link Wrote: [quote author=tony_d123 link=topic=15923.msg183182#msg183182 date=1423689155]
K&N's flow more air how? The surface area of the pleats is no better than a paper filter so obviously the material flows more air i.e. they have bigger holes. There was an article in Classic Mechanics last year on air filters and they shone a bright light through a K&N and a paper filter. There were very noticeable visible light holes in the K&N, if you can see them then dust and grit can get through.
So its a trade off between possible slightly better performance (dependent on many other variables) or longer engine life. You pays your money and you takes your choice
You realise you're talking to people with 12-17yr old bikes that are still going strong? :lol
[/quote]
Of course, there will always be the 95 year old granny who smokes 40 Woodbines and has a tot of whiskey every day and is still going strong. Wouldn't like to see the inside of her lungs though. All I'm saying is you make your choice with all the facts
Re: k&n are they worth it? - unfazed - 12-02-15
That may be the case with the grannies, but 3 engines, Midden in this case I would think the Broom Head, not being pushed properly :lol
Re: k&n are they worth it? - fazersharp - 12-02-15
I am now not convinced again
Re: k&n are they worth it? - Paulfzs - 12-02-15
haha dont blame me
i got it on its 2nd engine which lasted 400 miles before imploding randomly, had oil was being raced a little bit at the time but id barely gone above 70 before this happened.
this 3rd engine though is running amazingly
but clearly running lean!
Re: k&n are they worth it? - mikelockyer - 12-02-15
Hi My current 54 plate fazer thou has just clocked 20thou miles and a previous 02 model clocked 23thou and i am still using the same K&N filter. Never had engine issues on either bike. Regular maintenance by a good mechanic is the answer to most of the problems on any bike.
Regards Mike
Re: k&n are they worth it? - fazersharp - 12-02-15
So how much do they cost (incl oil cleaning kit) compared to an OEM one then.
Plus it looks a faf to clean and you then have to dry it and in the meantime you have a big hole to your engine and a mouse might get down there or something.