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DIY exhaust

Discussion in 'Mondial' started by Antwan, Feb 7, 2014.

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  1. Dizengoff

    Dizengoff Formula Junior

    Nov 24, 2011
    625
    Chicago
    I own Russ's old 3.2, the car mentioned in those threads...it's got the Magnaflow exhaust on it.

    It sounds phenomenal, close to the sound of a 12-cyl. I think that was the design goal.
     
  2. Antwan

    Antwan Karting

    Nov 22, 2013
    188
    Manchester UK
    this is great...
    Sunday is the day... photies to follow (that is if my welding is up to scratch)
     
  3. ozmondy

    ozmondy Formula Junior

    Oct 30, 2013
    307
    N.T, Australia
    Full Name:
    Peter
    I have been over it top to bottom and it def emits from the muffler.
    Had it on hoist while idling so I was right theya

    My car doesn't have any frills atall o it being an ozzy delivered 84
    It looks naked compared to the US delivered cars.
     
  4. ozmondy

    ozmondy Formula Junior

    Oct 30, 2013
    307
    N.T, Australia
    Full Name:
    Peter
    Been awhile ???
     
  5. Antwan

    Antwan Karting

    Nov 22, 2013
    188
    Manchester UK
    #30 Antwan, Feb 16, 2014
    Last edited by a moderator: Sep 7, 2017
    Hi all,
    Well a full day of making lots of noise has yielded something pretty decent.
    I am really happy with the result and I reckon it looks quite evil, in a nice way...

    I used my 130A diy mig welder which worked fine. I opted for pure argon gas although I think a mixture with a small amount of CO2 would have produced nicer results but as I have ground down the welds anyway, I wasn't too fussed. In fact the pure argon gave low levels of penetration which I guess is better for thinner pipe where you don't want too much obstruction of the gas. There is a lot of conflicting views on the internet. I would take a look and see which is best for your application.

    I still have to install the tips which arrive tomorrow. The ones I ordered looked just too large. I have gone for twin stainless, without inserts but exactly the same diameter as the originals. I will post more pics when complete.
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  6. Bell Bloke

    Bell Bloke Formula 3

    Dec 6, 2012
    1,839
    UK
    Antwan, I hope you post some video of this exhaust systen at full battle cry,
    Also, I love the car lift!! How much, who by, how high and are you 100% happy with it?
    Oh and is it safe? Ha ha.
    Cheers, Bell ;-)
     
  7. Antwan

    Antwan Karting

    Nov 22, 2013
    188
    Manchester UK
    Hi bell,
    No problems with it. See earlier in this thread for a bit of a description of the lift.
    Rgds, ant
     
  8. bosshog8

    bosshog8 Formula Junior

    Mar 13, 2011
    448
    Pinelands NJ
    Full Name:
    Demetrius
    I used this same muffler on my 348 with very good results. It should be very decent for you.
    [ame=http://www.youtube.com/watch?v=uS04gvdqIg4]Ferrari 348 Test Drive - YouTube[/ame]
     
  9. Antwan

    Antwan Karting

    Nov 22, 2013
    188
    Manchester UK
    Now that's more like it.
    Thanks for the vide Boss
     
  10. MvT

    MvT F1 Rookie

    May 25, 2013
    4,248
    The Netherlands - NH
    Full Name:
    Tijn
    Very nice Antwan! I am really looking forward of the sound of this one and its twin tips!
     
  11. Roc

    Roc Karting

    Nov 19, 2013
    189
    Las Vegas, NV
    Full Name:
    Rocco LaBriola
    Antwon, I'm very impressed! I'm now ready to do this on my '85QV. Would you be kind enough to give me the part number for the Magnaflow muffler.
     
  12. Antwan

    Antwan Karting

    Nov 22, 2013
    188
    Manchester UK
    Hi Roc,
    I went for the 11385. MagnaFlow Exhaust Products - For Trucks, Suv's, American Muscle, Diesel, & Sport Compact Vehicles
    I am told it has to have the Tru-X crossover pipe for it to be piped up the way I have, i.e. the two rear pipes are both inlets, two forward pipes are both outlets. It makes things much easier to fabricate. I am not sure whether there will be any performance effects (+ve or -ve) so I will report back when I have completed the exhaust in a couple of days time.
    ant
     
  13. Antwan

    Antwan Karting

    Nov 22, 2013
    188
    Manchester UK
    #38 Antwan, Feb 21, 2014
    Last edited by a moderator: Sep 7, 2017
    After a number of annoying wet evenings and not being able to get the welder out, I have finally finished it, just in time for it to rain again.
    Here it is anyway. Forecast tomorrow is good so i'll give some feedback on the noise!
    (not sure how to upload vids yet).
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  14. Bell Bloke

    Bell Bloke Formula 3

    Dec 6, 2012
    1,839
    UK
    Hey, can't wait to hear your 'guns' Antwan....:)
     
  15. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
    17,182
    Atlanta
    Full Name:
    John!
    I love that. Really looking forward to hearing
     
  16. Burch1

    Burch1 Formula 3

    May 26, 2012
    1,028
    Singapore/Carmel, IN
    Full Name:
    Greg
    Looks fab mate.
    Cheers,
    Greg

     
  17. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
    17,182
    Atlanta
    Full Name:
    John!
    We need to hear this thing!
     
  18. MvT

    MvT F1 Rookie

    May 25, 2013
    4,248
    The Netherlands - NH
    Full Name:
    Tijn
    I'm sitting here with my box of popcorn. :)
     
  19. bartzagato

    bartzagato Formula Junior

    Aug 7, 2010
    614
    Belgium
    Full Name:
    Bart
    Same thing here: we want to hear her scream Atwan.
    Bag of chips: check
    Cold beer: double check


    Now: your turn! ;)
     
  20. Antwan

    Antwan Karting

    Nov 22, 2013
    188
    Manchester UK
    Ok ok! I need a chum to take the vid while I give it the full moo.
    It is good though!!
     
  21. Sherstcp

    Sherstcp Karting

    Dec 28, 2012
    51
    Perfect timing... I need a new exhaust :)
     
  22. hanknum

    hanknum Formula 3

    Nov 1, 2003
    2,050
    Santa Barbara
    Full Name:
    Henry
    I have this same system and am very happy. I went with the 11" body (does not have an "X" crossover), the 14" ones do. The 11" bodies are too short for the "X" pipe. My system enters at diagonal corners so with the X pipe would not be ideal. My system is essentially two straight throughs sharing the same canister. Keep in mind with your system, that the exhaust gases will not be meeting head on, but will somewhat be fighting each other. This may or may not create more back pressure.

    As far as mating the ends, the ends on the muffler or tubing can all be expanded or "squeezed" so that one can slip into the other. Any muffler shop should be able to do this, or you can get yourself the tool.

    Good luck and let us know how it sounds when you are done.
     
  23. 911308

    911308 Karting

    Jul 27, 2010
    113
    Launceston
    #48 911308, Mar 4, 2014
    Last edited by a moderator: Sep 7, 2017
    Just to add to the experiences on this thread, I built a magnaflow 12568 true X which is the 22 inch body. This is on a '79 308 GTB 2v.
    This exhaust turned out to be OEM "quiet" with no drone anywhere with just the pea shooter 2.5 outlets. Performance has been a revelation compared to the original thermoreactor.
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  24. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
    17,182
    Atlanta
    Full Name:
    John!
    Sound clip incoming?
     
  25. ozmondy

    ozmondy Formula Junior

    Oct 30, 2013
    307
    N.T, Australia
    Full Name:
    Peter
    C'mon the suspense is unnerving
     

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