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Thread: Exhaust crap

  1. #1
    Join Date
    Feb 2016
    Location
    Cincinnati, OH
    Posts
    146

    Exhaust crap

    What downtube size should I get?
    I'm looking to replace the OE downtubes and cats with hi-flow downtubes and cats. There are two options from Super Coupe Performance: 2 1/4" or 2 1/2".

    There is an aftermarket catback exhaust system on the vehicle already however I'm not sure who makes it.

  2. #2
    Join Date
    Mar 2010
    Location
    Grafton, OHIO
    Posts
    636
    Mandrel bent systems offer a couple sizes, 2 1/4 and 2 1/2 I believe, talk to Josh. Ava for early and late manifolds. Got a full exhaust from him. Nice stuff.

    Adam

  3. #3
    Join Date
    Dec 2002
    Location
    Merrimac, MA
    Posts
    239
    Quote Originally Posted by aroot1 View Post
    Mandrel bent systems offer a couple sizes, 2 1/4 and 2 1/2 I believe, talk to Josh. Ava for early and late manifolds. Got a full exhaust from him. Nice stuff.

    Adam
    I'm not trying steer business away from mandrel bends. The product is beautiful, fairly priced and Josh is a standup guy. I just want to throw caution to the wind that at least on the early style (wide tank) system it will not fit with out modification. Even with the heat shield removed it is not possible. I'll second what aroot has said, talk to Josh first. If all you need is down pipes and your cat back is adequate it should be a straight forward.l upgrade.
    1989 XR7 5-SPD - 15,700 miles - Garage Queen

  4. #4
    Join Date
    Feb 2016
    Location
    Cincinnati, OH
    Posts
    146
    The tubes are really just for if the OE cats are where my exhaust leak is coming from, but i'm sure its just leaking from the flange area.

  5. #5
    Join Date
    Feb 2004
    Location
    IA
    Posts
    4,252
    Help me out with Josh's contact information or company name is possible please.
    Honor, Grace and Dignity......Remember these

  6. #6
    Join Date
    Mar 2011
    Location
    SF, CA
    Posts
    218
    http://www.mandrelexhaustsystems.com/
    305-378-9337
    info@mandrelexhaustsystems.com

    I had an idea as to what I wanted for my tbird I use in lemons track racing w/ a 5.0 (2.25" -> Y -> 3" single pipe out back). Josh helped me spec out all the necessary bits, gave suggestions, and sold me all the pieces I needed for a reasonable pricing (cheaper than what I could do pricing the bits from summit).
    Despite shipping from FL to CA, shipping was reasonable as well.
    -g

  7. #7
    Join Date
    May 2004
    Location
    Va. Beach,Va.
    Posts
    6,965
    If you going to spend the money go with the 2.5" diameter upgrade, no sense in staying with the stock 2.25" diameter.
    SCCOA Member #2406
    '94 SC AUTO - $$$$ Pit
    http://www.sccoa.com/forums/garage_v..._vehicle&id=19

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