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F430 exhaust valve questions

Discussion in '360/430' started by aslowdodge, Oct 17, 2019.

  1. aslowdodge

    aslowdodge Karting

    Jun 5, 2004
    180
    Marietta, Georgia
    i have a stock exhaust manifolds with a tubi muffler. The previous owner removed the exhaust valves. While the sound is pretty cool, the noise level gets very tiring going down the freeway. For those that have the valves, is it closed during cruising down the freeway? If not, is it harmful to get a manual control and close the exhaust valve at freeway speeds?
    I see exhaust valves on eBay, would those work?
     
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  3. Bob in Texas

    Bob in Texas Formula 3
    Rossa Subscribed

    Apr 23, 2012
    2,361
    Just East of Weird
    Full Name:
    Bob
    Youtuber Normal guy Supercar installed aftermarket exhaust valves on his car. They kept breaking. Look him up on YouTube and search for his videos, it’s probably been 2 years since he posted about the valves. Caveat emptor.


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  4. ttforcefed

    ttforcefed F1 World Champ
    Rossa Subscribed

    Aug 22, 2002
    15,589
    did he remove them or just disconnect them? if they were removed, that sucks unfort. the open or close depends on how much throttle ur giving it - so if ur cruising at speed on the freeway and low rpms they are closed...
     
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  5. cfensty

    cfensty Formula Junior
    Silver Subscribed

    Jan 1, 2008
    721
    Hilton Head Is., SC
    Full Name:
    Craig
    Likely just disconnected and need the hoses reconnected.


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  6. Way2fast

    Way2fast Formula 3

    May 24, 2006
    2,045
    Santa Barbara County
    Full Name:
    Sam
    When mine were connected they would open at 4k rpms

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  8. mike32

    mike32 F1 Rookie

    May 13, 2016
    3,305
    Uk
    If he removed the valves he would have had to weld a pipe section in its place- if removed then look on e bay for a used set of pipes and swap them.
    More likely he has just plugged the hoses, just reconnect them
     
  9. Flea7

    Flea7 Formula 3
    Rossa Subscribed Silver Subscribed Owner

    Feb 25, 2010
    1,216
    Seattle WA
    Full Name:
    SKIM
    The YouTuber is a good example of what NOT to do.
     
  10. aslowdodge

    aslowdodge Karting

    Jun 5, 2004
    180
    Marietta, Georgia
    The valves are definitely gone. I wish they were only disconnected. While cruising at 80mph it’s probably at 4000 rpm and kind of too loud to just cruise at a length of time.
     
  11. mike32

    mike32 F1 Rookie

    May 13, 2016
    3,305
    Uk
    Common and cheap on e bay
     
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  13. ttforcefed

    ttforcefed F1 World Champ
    Rossa Subscribed

    Aug 22, 2002
    15,589
    Tubi has 2 exhausts - one with valves and one without. You have one without it sounds like.
     
  14. aslowdodge

    aslowdodge Karting

    Jun 5, 2004
    180
    Marietta, Georgia
    Yup. Trying to figure out a way to put valves back on somehow.
     
  15. ttforcefed

    ttforcefed F1 World Champ
    Rossa Subscribed

    Aug 22, 2002
    15,589
    Sell what u have and get a new tubi
     

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