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Mazda Miata: Air filter - Jackson Racing or K&N

  1. #1
    Timo
    Guest

    Air filter - Jackson Racing or K&N

    Time to change the air filter (insert) on my Eunos. The JR filter
    isn't that much more expensive than the standard Mazda filter (which
    appeals) but I was wondering if anyone had any experience with those
    compared to K&N filters?

    Ideally I'd like to fit the JR cold air induction kit, but I
    unfortunately need to spend some money on fixing other faults
    first...
    --
    Timo Geusch

    '91 Eunos Roadster V-Spec

  2. #2
    Lanny
    Guest

    Re: Air filter - Jackson Racing or K&N

    In article <unix-consult.com>,
    Timo Geusch <co.uk> wrote:
     

    I'm not sure which (K&N or JR) passes the most dirt, but both are
    inferior as filters to the OEM paper cartridge. All three make the same
    power, so the only issue is how much extra dirt you want in your engine.

    FWIW, I had a JR CAI for a couple of years. I'm back to the stock airbox
    with a paper filter and a Randall duct, and wish I'd never had the JR. I
    worry a little about the unnecessary wear it caused, without any real
    benefit.

    --
    Lanny Chambers, St. Louis, USA
    '94C
    the alignment page:
    http://www.hummingbirds.net/alignment.html

  3. #3
    Leon
    Guest

    Re: Air filter - Jackson Racing or K&N

    Lanny Chambers <net> wrote:
     

    You seem to be getting grumpy in your old age. You got about 20
    additional hp out of your CAI. That is a lot of power for relatively
    little money.

    Think of the glass being half full, instead of half empty.

    Leon
    --
    Leon van Dommelen Bozo, the White 96 Sebring Miata ,)
    To reply to me, the word Miata must be in the subject.
    EXIT THE INTERSTATES (Jamie Jensen)


  4. #4
    Lanny
    Guest

    Re: Air filter - Jackson Racing or K&N

    In article <com>,
    net (Leon van Dommelen) wrote:
     

    No doubt true, but irrelevant to this discussion.
     

    Nah, I think I recall estimating 10-12 from the CAI + hi-flow cat +
    muffler + timing bump. I'll stand by that, but I no longer believe the
    CAI had anything to do with it. It did improve throttle response a tiny
    bit, but my current Randall duct lets me use 87 octane in 90-degree
    weather, which the JR CAI would not. Further, I suspect the JR CAI's
    location 1) impedes cooling by blocking radiator airflow, and 2) results
    in airbox heatsoaking at any speed. Too high a price to pay for a minor
    throttle response benefit.

    If cold air is the goal, suck it up, drill the hole in your firewall,
    and install a Randall.

    --
    Lanny Chambers, St. Louis, USA
    '94C
    the alignment page:
    http://www.hummingbirds.net/alignment.html

  5. #5
    Leon
    Guest

    Re: Air filter - Jackson Racing or K&N

    Lanny Chambers <net> wrote:
     

    Well, in
    http://groups.google.com/groups?q=CAI+JR+group:rec.autos.makers.mazda.miata +author:Lanny&hl=en&lr=&ie=UTF-8&scoring=d&selm=lanny-2204990105010001%40iits0350.inlink.com&rnum=44
    L. Chambers wrote: 

    Does 15 rwhp sound as 20 hp to you if 133 hp is about 100 at the
    rear wheels? It does to me.

    In
    http://groups.google.com/groups?q=CAI+JR+group:rec.autos.makers.mazda.miata +author:Lanny&hl=en&lr=&ie=UTF-8&scoring=d&selm=lanny-2803992250410001%40iits0217.inlink.com&rnum=45
    L. Chambers wrote: 

    It seems to me then, that the facts as stated implied that the
    CAI was essential to the claimed 20 hp power gain. (In addition,
    the other items have negligible cost compared to a CAI.)

    Just asking of course. One likes to get those things straight,
    doesn't one?

    Leon
    --
    Leon van Dommelen Bozo, the White 96 Sebring Miata ,)
    To reply to me, the word Miata must be in the subject.
    EXIT THE INTERSTATES (Jamie Jensen)


  6. #6
    Lanny
    Guest

    Re: Air filter - Jackson Racing or K&N

    In article <com>,
    net (Leon van Dommelen) wrote:
     

    The "20 hp power gain" is your claim, not mine--I always use RWHP, since
    it's all that can be documented without unreasonable effort. But
    hindsight always helps clarify things--removing the JR CAI made
    surprisingly little difference in how the car drove. I am not ashamed to
    correct myself when I've guessed wrong.

    This isn't a guess: the main problem with the JR CAI is that it's a
    piece of junk. It doesn't fit most Miatas with enough clearance to
    prevent cracking due to vibration, and the most insidious cracks can't
    be seen without disassembling the airbox from the MAS adapter.

    Shouldn't you be xeroxing syllabi for the fall semester or something? I
    thought your field was fluid dynamics, not ancient history...

    --
    Lanny Chambers, St. Louis, USA
    '94C
    the alignment page:
    http://www.hummingbirds.net/alignment.html

  7. #7
    Leon
    Guest

    Re: Air filter - Jackson Racing or K&N

    Lanny Chambers <net> wrote:
     

    We like to bring out people talents. Say, the grumpy even grumpier.

    But I better start getting ready for my sabbatical...

    Leon [:}
    --
    Leon van Dommelen Bozo, the White 96 Sebring Miata ,)
    To reply to me, the word Miata must be in the subject.
    EXIT THE INTERSTATES (Jamie Jensen)


  8. #8
    Chris
    Guest

    Re: Air filter - Jackson Racing or K&N

    Good exchange!

    Ya'all are the greatest!

    Chris
    92BB&T

    "Leon van Dommelen" <net> wrote in message
    news:com... 
    until 
    the 
    free-flow 



  9. #9
    Lanny
    Guest

    Re: Air filter - Jackson Racing or K&N

    In article <supernews.com>,
    "Chris D'Agnolo" <net> wrote:
     

    Well, Leon, it looks like our ratings are up.

    What's next? Our own TV show? We could call it "Last Cynic Standing."

    --
    Lanny Chambers, St. Louis, USA
    '94C
    the alignment page:
    http://www.hummingbirds.net/alignment.html

  10. #10
    Leon
    Guest

    Re: Air filter - Jackson Racing or K&N

    Lanny Chambers <net> wrote:
     

    I like reality shows.

    Leon

    --
    Leon van Dommelen Bozo, the White 96 Sebring Miata .)
    To reply to me, the word Miata must be in the subject.
    EXIT THE INTERSTATES (Jamie Jensen)


 

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