Jump to content


Photo
- - - - -

Cheap Copy Kn Air Filter


  • Please log in to reply
18 replies to this topic

#1 1314cc

1314cc

    Mini Mad

  • Members
  • PipPipPipPip
  • 197 posts
  • Local Club: tumbleweedminisbristol

Posted 25 October 2019 - 10:23 AM

I know the quality of kn but just wondered if anyone has used the cheap copy kn cone air filters. Im guessing they dont flow as well? Or maybe no difference?

#2 nicklouse

nicklouse

    Moved Into The Garage

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPipPipPip
  • 12,814 posts
  • Location: Not Yorkshire
  • Local Club: Anonyme Miniholiker

Posted 25 October 2019 - 11:14 AM

Cone filters are not good at all.

#3 Retroman

Retroman

    One Carb Or Two?

  • Traders
  • PipPipPipPipPipPipPip
  • 963 posts
  • Location: Sunny Sabden
  • Local Club: CDMC

Posted 25 October 2019 - 11:24 AM

Nick is correct

 

There are so many cheap nasty cone filters nobody will have any flow figures for them...and how well do they filter...? The guys making them have no idea and will have done no testing, they just want to sell them.

 

Cones partly cover the mouth of the carb and don't work that well from a flow point, you are better off with a standard air filter box an elbow and a few holes in the back of the box...Keith Calver proved it.



#4 panky

panky

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 1,424 posts
  • Location: Cheshire
  • Local Club: Northwest Casual Classics

Posted 25 October 2019 - 12:28 PM

They are noisy too. I fitted one to one of my Commer campers as it was the easiest thing to fit when I did an SU conversion to it, it's the loudest thing in the cab and that's no mean feat on an old Commer O_O

On the Mini I've found the standard air box with a K&N element to be absolutely fine compared with the K&N cone, a lot quieter and no noticeable drop in performance. Did the airbox drilled thing too, I found it just increased the noise a bit.



#5 Midas Mk1

Midas Mk1

    Crazy About Mini's

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPipPip
  • 5,100 posts
  • Location: Manchester
  • Local Club: S.U.N.M.C

Posted 25 October 2019 - 03:45 PM

Buy cheap buy twice, med itg kit is the way forward

#6 unburntfuelinthemorning

unburntfuelinthemorning

    One Carb Or Two?

  • TMF+ Member
  • PipPipPipPipPipPipPip
  • 1,227 posts
  • Location: Bedfordshire

Posted 25 October 2019 - 04:28 PM

It's easy to make an air filter flow air and easy to make one filter air.  Making one that does both well is the trick and why good ones will cost more.



#7 Moke Spider

Moke Spider

    Crazy About Mini's

  • TMF Team
  • PipPipPipPipPipPipPipPipPipPip
  • 9,353 posts
  • Location: NSW
  • Local Club: South Australian Moke Club

Posted 25 October 2019 - 04:42 PM

I found fitting a bell mouth in the Cone Filters helps. It doesn't 'fix' them, but is a move towards restoring what they take away.



#8 Tupers

Tupers

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 3,881 posts
  • Location: Devon

Posted 25 October 2019 - 05:01 PM

First off cheap air filters are a false economy. They either done filter prompt and knacker your engine or restrict flow too much and lose you power.


A cone filter with a stub stack/small trumpet will flow nicely but can be quite loud but that’s personal preference.

#9 1314cc

1314cc

    Mini Mad

  • Members
  • PipPipPipPip
  • 197 posts
  • Local Club: tumbleweedminisbristol

Posted 25 October 2019 - 05:38 PM

I did read an article by Keith calver and how he found a drilled airbox with kn produced some of the best results

#10 Maccmike8

Maccmike8

    On The Road

  • TMF+ Member
  • PipPip
  • 40 posts
  • Location: uk

Posted 25 October 2019 - 05:53 PM

Aftermarket filters such as K+N restrict airflow due to increased filtration to protect tuned engines.

An article somewhere out there tests oe vs aftermarket panel filters proving such.

To get around it you fit oversized filters with greater surface area, such as cone filters.



#11 Tones61

Tones61

    Passed Test

  • Noobies
  • PipPip
  • 29 posts
  • Location: Plymouth

Posted 25 October 2019 - 06:11 PM

https://www.calverst...air-filtration/



#12 Minigman

Minigman

    Speeding Along Now

  • TMF+ Member
  • PipPipPipPipPip
  • 427 posts
  • Location: Barnstaple

Posted 25 October 2019 - 06:18 PM

I’m curious what you chaps recommend for twin HS4 carbs. I have them on a 1330cc mk3 fitted with K&N cones with stub stacks and the noise does get to me after a while (maybe my old age!) Please don’t say a HIF44, as good as they are, I wouldn’t fit one on a mk3.

#13 nicklouse

nicklouse

    Moved Into The Garage

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPipPipPip
  • 12,814 posts
  • Location: Not Yorkshire
  • Local Club: Anonyme Miniholiker

Posted 25 October 2019 - 07:45 PM

I’m curious what you chaps recommend for twin HS4 carbs. I have them on a 1330cc mk3 fitted with K&N cones with stub stacks and the noise does get to me after a while (maybe my old age!) Please don’t say a HIF44, as good as they are, I wouldn’t fit one on a mk3.

The old housing modified and a couple of KN elements or one if that’s what they do.



#14 Minigman

Minigman

    Speeding Along Now

  • TMF+ Member
  • PipPipPipPipPip
  • 427 posts
  • Location: Barnstaple

Posted 25 October 2019 - 08:48 PM


I’m curious what you chaps recommend for twin HS4 carbs. I have them on a 1330cc mk3 fitted with K&N cones with stub stacks and the noise does get to me after a while (maybe my old age!) Please don’t say a HIF44, as good as they are, I wouldn’t fit one on a mk3.

The old housing modified and a couple of KN elements or one if that’s what they do.


You mean a modified 1 1/4” twin airbox?

#15 Turbo Phil

Turbo Phil

    Up Into Fourth

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPip
  • 2,136 posts
  • Location: Cumbria
  • Local Club: Cumbria Classic Mini Club

Posted 25 October 2019 - 10:26 PM

From The little bit of flowbench testing I did the K+N cone filter offered virtually no restriction to airflow at all. The same can’t be said about the other “filter” I tested alongside it.
https://www.facebook...2656118?sfns=mo

Phil.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

Mini Spares