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Thread: exhaust setup

  1. #1
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    exhaust setup

    I have a 91, is it worth 260 dollars (which it costs here in sweden for a 92 tank) to do the swap to the 92 tank? Will the sound change or the flow?


    What about mufflers and resonators? Resonator in the middle and mufflers in the back?

    Im running headers...

    Thank you

  2. #2
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    I never noticed any sound change. The drone came after removing the resonator, but that was solved by installing a magnaflo 2.5 dual in and 2.5 dual out.
    Honor, Grace and Dignity......Remember these

  3. #3
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    Quote Originally Posted by Tedor View Post
    I have a 91, is it worth 260 dollars (which it costs here in sweden for a 92 tank) to do the swap to the 92 tank? Will the sound change or the flow?


    What about mufflers and resonators? Resonator in the middle and mufflers in the back?

    Im running headers...

    Thank you
    No...I don't think it's worth much if anything in the power making department. You can make well over 400 rwhp using an early model fuel tank exhaust system.

    David
    91 SC AOD 4.2..2.3 Whipple........10.92 @ 126.70
    93 SC AOD 347 Turbo.................10.04 @ 138.99
    My Garage

  4. #4
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    I think late model tank is 1 gal less than early...so save little weight there...and it is easier to run dual piping through late model tank

    those are generally the benefits

  5. #5
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    Thanks for your input. One resonator and two mufflers at the end, is that the way to go for best performance and sound?

  6. #6
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    the least drone seems to occur in the two in one out resonator then split back to two after the rear. You can fit a single 3.5" off the rsonator out to the back an dthen sp,it it off into two 2.5" pipes

    Basically (2) 2.5" into resonator (1) 3.5" out which will split into (2) 2.5" in the rear.

    Best for early model tank in my opinion. Stick to Borla mufflers for sound quality
    What do Turbo Supercoupes and a certain someone have in common. They both go "BOOM!"
    http://www.sccoa.com/forums/garage_v...vehicle&id=110
    Quote Originally Posted by ricardoa1 View Post
    I love the filter. Its pimp. paper element and 10Mircron filtration, 12" long cause size matters.

  7. #7
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    I say yes to the newer tank because your exhaust will be a lot easier to route. The new one basically allows the exhaust straight through, the early one you have to do a 90 degree bend just to make it around.
    1989 T-Bird SC M5R2
    12.42 @ 109.5
    433 RWHP/424 RWT

    Hella Flush - My rims grind on my unibody.

  8. #8
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    Quote Originally Posted by XxSlowpokexX View Post
    Basically (2) 2.5" into resonator (1) 3.5" out which will split into (2) 2.5" in the rear.
    I'm pretty sure you won't be able to route a 3.5 inch pipe around an early style tank. If you do, it will be so horribly disfigured that you will most likely end up with 2.75 inch choke points.
    1989 T-Bird SC M5R2
    12.42 @ 109.5
    433 RWHP/424 RWT

    Hella Flush - My rims grind on my unibody.

  9. #9
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    Quote Originally Posted by Micahdogg View Post
    I'm pretty sure you won't be able to route a 3.5 inch pipe around an early style tank. If you do, it will be so horribly disfigured that you will most likely end up with 2.75 inch choke points.
    I agree, that a 3.5" center pipe would be a very tight fit. Mine had a 3" mandrell bent center pipe with the early model tank. When switching to long tube headers and a much bigger exhaust I also switched to a late model tank...BTW it gained zero HP.

    Tedor,

    This thread has some pics of the old vs new exhaust that shows the center pipe routing differince.

    http://www.sccoa.com/forums/showthre...inless+exhaust

    David
    91 SC AOD 4.2..2.3 Whipple........10.92 @ 126.70
    93 SC AOD 347 Turbo.................10.04 @ 138.99
    My Garage

  10. #10
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    I had a 3.5 inch in one of my older sc's. Mandrel bent. If you went with compression bends im sure it would be disfigured
    What do Turbo Supercoupes and a certain someone have in common. They both go "BOOM!"
    http://www.sccoa.com/forums/garage_v...vehicle&id=110
    Quote Originally Posted by ricardoa1 View Post
    I love the filter. Its pimp. paper element and 10Mircron filtration, 12" long cause size matters.

  11. #11
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    Quote Originally Posted by David Neibert View Post
    I agree, that a 3.5" center pipe would be a very tight fit. Mine had a 3" mandrell bent center pipe with the early model tank. When switching to long tube headers and a much bigger exhaust I also switched to a late model tank...BTW it gained zero HP.

    Tedor,

    This thread has some pics of the old vs new exhaust that shows the center pipe routing differince.

    http://www.sccoa.com/forums/showthre...inless+exhaust

    David
    I still find it strange that you got 0 benefit from the new exhaust as it really flows only as well as its 3" or less choke point.
    What do Turbo Supercoupes and a certain someone have in common. They both go "BOOM!"
    http://www.sccoa.com/forums/garage_v...vehicle&id=110
    Quote Originally Posted by ricardoa1 View Post
    I love the filter. Its pimp. paper element and 10Mircron filtration, 12" long cause size matters.

  12. #12
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    Quote Originally Posted by XxSlowpokexX View Post
    I still find it strange that you got 0 benefit from the new exhaust as it really flows only as well as its 3" or less choke point.
    Probably helping now that I've got a 4.2 motor, bigger cam and whipple supercharger. Just wasn't holding me back on the old 3.8 motor with 1.7 AR.

    David
    91 SC AOD 4.2..2.3 Whipple........10.92 @ 126.70
    93 SC AOD 347 Turbo.................10.04 @ 138.99
    My Garage

  13. #13
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    I just remember seeing someone mutilate a 3 inch pipe trying to get it around the old style tank. And knowing how tight this 3.5 inch pipe was on my new style tank, I wouldn't even attempt it on the old style.

    1989 T-Bird SC M5R2
    12.42 @ 109.5
    433 RWHP/424 RWT

    Hella Flush - My rims grind on my unibody.

  14. #14
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    Sep 2011
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    Thanks for all the info!

    Can I have this magnaflow where the stock resonator would have been?
    http://www.magnaflow.com/02product/s...e=main&id=9983

    What magnaflow mufflers should I use in the rear?

    Thanks

  15. #15
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    if it is not directional then yes

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