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Spider muffler guts?

Discussion in '348/355' started by notbostrom, Apr 23, 2009.

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  1. notbostrom

    notbostrom Formula Junior

    May 8, 2006
    957
    Orlando, FL
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    Ben
    #1 notbostrom, Apr 23, 2009
    Last edited: Apr 23, 2009
    Has anyone ever peeled (cut) open a stock spider muffler? Or have diagram of the internals? I've considered doing some experimentation with a valving system.. stock sound at idle and low rpm but F1 sound above say 6k rpm's.. just curious what's inside the stocker

    maybe even an externaly adjustable muffler.. can be adjusted from the rear of the car for any desired level??

    If it proves viable maybe Goth could incorporate it into his ???
     
  2. tashier

    tashier Formula Junior

    Sep 8, 2008
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    Oregon
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    Sean
    #2 tashier, Apr 23, 2009
    I asked the same question a few weeks ago but got no responses. I was also interested in the inside of a muffler, however mine is the Tubi not OEM.
     
  3. hacker-pschorr

    hacker-pschorr Formula Junior

    Sep 27, 2006
    584
    Land of Lambeau
    #3 hacker-pschorr, Apr 23, 2009
    I have the original muffler from my fathers 97 in the garage. I'm tempted to cut it open...... :D
     
  4. vvassallo

    vvassallo F1 Veteran

    Aug 4, 2006
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    #4 vvassallo, Apr 23, 2009
    The interior of the stock spider muff is pretty simple. There are 2 pipes in and 2 pipes out and they do not connect. In between is a bunch of packing. Then the outside is heavily wrapped and armored. I believe this is how goth explained it to me. Maybe he can elaborate.
     
  5. notbostrom

    notbostrom Formula Junior

    May 8, 2006
    957
    Orlando, FL
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    Ben
    #5 notbostrom, Apr 23, 2009
    I wonder what the result of cutting a small hole and removing some packing would be???
     
  6. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    29,277
    socal
    #6 fatbillybob, Apr 23, 2009
    you know ricers been doing this a long time. General problem is that you take the packing out and you got a huge echo chamber volume. So you need to tune the sound with packing and or baffling and can volume. Then we have not even got to back pressure scavenging etc... You guys need to talk to OZ. But it is done and some guys get nice noises. In fact I'm pretty sure we have a 360 owner on FC that does this for P-bugs as one of his services. Don't know if he has done f cars.
     
  7. notbostrom

    notbostrom Formula Junior

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    #7 notbostrom, Apr 23, 2009
    Thanks FBB
     
  8. tashier

    tashier Formula Junior

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    Sean
    #8 tashier, Apr 23, 2009
    Ummm, there's 3 pipes in and 2 out... That's why I was wondering what the insides looked like, to know if the bypass had less baffling. It sure sounds like it on the Tubi.
     
  9. vvassallo

    vvassallo F1 Veteran

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    #9 vvassallo, Apr 23, 2009
    I show on mine 1 inlet from the cats on each side and, well 2 outlets to the tail pipes. Sorry, I was thinking there was only 1 per side with a split tail pipe. Either way, the tubes do not connect inside the stock muffler. The flow is kind of pressurized. Removing stuff inside it is going to reduce back pressure and increase the exhasut note. Could be a cheap upgrade. Try it and let us know.
     
  10. notbostrom

    notbostrom Formula Junior

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    #10 notbostrom, Apr 23, 2009
    what do they go for used in case I turn mine into a lost cause?
     
  11. 3forty8

    3forty8 F1 Rookie
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    Apr 25, 2006
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    #11 3forty8, Apr 23, 2009
    You are both right - but you are talking about two different muffler cans (355 vs. 348).
     
  12. 3forty8

    3forty8 F1 Rookie
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    Apr 25, 2006
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    #12 3forty8, Apr 23, 2009
    Maybe try to pick one up on eBay as a spare first? Saw one on there a couple of months ago that went for around $350.
     
  13. notbostrom

    notbostrom Formula Junior

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    #13 notbostrom, Apr 23, 2009
    grrrrrr $350.. might as well just pony up $1000 for the ubi and call it a day
     
  14. speedtrapp

    speedtrapp Formula Junior

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    #14 speedtrapp, Apr 23, 2009
    Last edited: Apr 23, 2009
    Tubi for 1,000 are you sure? if you can get one for that price ill take 2!!!!!!!!!!
     
  15. notbostrom

    notbostrom Formula Junior

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    #15 notbostrom, Apr 23, 2009
    I've seen em go for $900 if you keep your eyes open
     
  16. speedtrapp

    speedtrapp Formula Junior

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    #16 speedtrapp, Apr 24, 2009
    900!!!!! you gotta be kiddin me--- please for the love of god WHERE
     
  17. notbostrom

    notbostrom Formula Junior

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    #17 notbostrom, Apr 24, 2009
    enough about Tubi prices, That's not what this thread is about
     
  18. vvassallo

    vvassallo F1 Veteran

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    #18 vvassallo, Apr 24, 2009
    True fact; we were talking about the 348 Spider/Challenge/Serie Speciale single can muffler.
     

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