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Thread: $28 Removable Rubber Randall Cowl Intake DIYer

  1. #1
    Stalled - Fire it up!
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    $28 Removable Rubber Randall Cowl Intake DIYer

    Hi all,
    New here and thought this might be of interest. This was so simple - and it actually did some good too.

    1) Cut a 2" round hole in the firewall/cowl.
    2) Cut the original plastic intake tube right below the master brake cylinder.
    3) Cut the curved section in a Dayco 72020 automotive hose ($28 at Autozone) to most effective route from the intake tube to your new firewall/cowl hole and slip the hose inside the intake tube's throat.
    4) Slip the other end of the hose (trimmed down about 8" on the straight end) through the cowl opening leaving an inch or so to keep any water from reaching the opening.

    When cut correctly, the hose bends create a perfect fit and no hardware was required. I have driven several months with this in place and seen no movement. Can be removed in seconds without tools to access the clutch reservoir.

    What is really happening here is horsepower recovery - that is to say, whatever horsepower is lost due to hot engine bay air intake temps has been recovered with an ambient air intake spource. Acceleration is smoother in the mid/upper range - especially in cooler weather. Nothing earthshattering but money well spent...

    intake-cowl2.jpgintake-main1.jpgintake-mod3.jpg
    __________________
    Brian Patterson of Powell, TN
    1995 Miata 'Black Flea' | 2007 Suzuki V-Strom DL650A | 2003 Benz E320 | 1996 Jeep Cherokee
    Brian Patterson - Powell, TN
    1995 Miata | 2003 Mercedes-Benz E320 | !996 Jeep Cherokee | 2007 Suzuki V-Strom 650A

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  3. #2
    Forum Sponsor revlimiter's Avatar
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    Very cool mod and nice find on that hose! I'm sure quite a few folks will benefit from this.

  4. #3
    Individual-1 ☚ ☻ ☛ Agent☣Orange's Avatar
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    Nice write-up, I see this is your first post so welcome to the forum and you even began with a write-up! Cool.

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    Admin / Pit Boss / Miataholic Phatmiata's Avatar
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    Cool idea!! Thanks for the heads up!

  6. #5
    3,000 rpm - starting to feel the power maharaj's Avatar
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    First post and it is something like this! He should get some bonus points!

  7. #6
    3,000 rpm - starting to feel the power treeafodo's Avatar
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    Sweet little write up. Welcome to the site by the way.
    Austin.
    Lexy (Little Hobo) - Transforming from Wreck to Race Car.
    Quote Originally Posted by Blueiii View Post
    Your priorities seem a bit messed up to me, although that's because I try to get my lap times to decrease.

  8. #7
    5,000 rpm - there be torque here! The Driver's Avatar
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    After my first track time ever, I'll be doing this, so subscribed. Too bad the OP never came back!
    96 Montego, replacing a 95M... I miss: My running peeps in Tampa, running barefoot @ Clearwater Beach and First Choice BBQ, in Brandon. In So Cal I miss: The Malibu Canyons, CA 33 and In & Out Burgers ! I'm from Tampa, if I was from Tampa Bay, I'd be a fish!

  9. #8
    Super Moderator tsingson's Avatar
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    He might be working on a HUGE DIY write up for something else?

  10. #9
    Idling - Listen to it purr...
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    Anyone else try this?

  11. #10
    5,000 rpm - there be torque here! The Driver's Avatar
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    Quote Originally Posted by MartinInShorts View Post
    Anyone else try this?
    Oh, it's a well known and proven method. Google it as "Randall Cowl intake"!
    96 Montego, replacing a 95M... I miss: My running peeps in Tampa, running barefoot @ Clearwater Beach and First Choice BBQ, in Brandon. In So Cal I miss: The Malibu Canyons, CA 33 and In & Out Burgers ! I'm from Tampa, if I was from Tampa Bay, I'd be a fish!

  12. #11
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  13. #12
    Super Moderator atank's Avatar
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    Welcome to the forum, this is a good mod!

  14. #13
    5,000 rpm - there be torque here! The Driver's Avatar
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    96 Montego, replacing a 95M... I miss: My running peeps in Tampa, running barefoot @ Clearwater Beach and First Choice BBQ, in Brandon. In So Cal I miss: The Malibu Canyons, CA 33 and In & Out Burgers ! I'm from Tampa, if I was from Tampa Bay, I'd be a fish!

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