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Thread: Help! Exhaust Too Loud

  1. #1
    Join Date
    Feb 2004
    Location
    Ridgefield, CT
    Posts
    127

    Default Help! Exhaust Too Loud

    I just put a 'new' exhaust on my RX-7 race car this weekend and it's WAY too loud. Apart from putting in a new resonator, which I will do eventually, is there a way to quiet it down? Will a cone insert like this one http://www.summitracing.com/parts/DTC-72-32520/ work? For what its worth, I'm running a 3'' pipe.

  2. #2
    Join Date
    May 2001
    Location
    IT.com "First Loser" Greensboro, NC USA
    Posts
    8,607

    Default

    Rotaries are unique beasts where sound is concerned, but you can start by putting an elbow on the outlet end of the pipe pointing away from sound control.

    K

  3. #3
    Join Date
    Jul 2008
    Location
    Vermont
    Posts
    721

    Default

    Perhaps a supertrap with just a few cones in it. Could never get my 12a quiet enough for track days. Saw a guy on friday at LRP(NASA track day) thaat had a 2nd gen 13b. He had 2 inlins mufflers underneath and a third muffler attached at a right angle off the rear bumper!! Must be tough to go up the back hill and get it on the trailer, too.

  4. #4
    Join Date
    Jan 2001
    Location
    Buffalo, New York
    Posts
    2,942

    Default

    Forget those SuperTrapp Plate reduction. You need to consult with rotary experts...assuming they can hear!

    Those motors are pretty difficult to get quiet without the correct system.

  5. #5
    Join Date
    Jan 2008
    Posts
    115

    Default exhaust

    get up with steve eckerich , he has one of the best exhaust systems out there for 2nd gen rx-7s. you didn't say which gen you have. isc racing has one also ,but i think mike doesn't keep any in stock. steve's type makes the most power and is really quiet. there are other rx-7 shops that offer thier verion. ralph

  6. #6
    Join Date
    Feb 2004
    Location
    Ridgefield, CT
    Posts
    127

    Default

    how would i get in touch with steve?
    Drew

  7. #7
    Join Date
    Oct 2004
    Location
    Asheville, NC US
    Posts
    1,626

    Default

    PM me and I will give you my number.
    Steve Eckerich
    ITS 18 Speedsource RX7
    ITR RX8 (under construction)

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