308 V12 conversion begins | Page 116 | FerrariChat

308 V12 conversion begins

Discussion in '308/328' started by mk e, Oct 9, 2007.

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  1. Spasso

    Spasso F1 World Champ

    Feb 16, 2003
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    The fabulous PNW
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    Fabulous!
     
  2. 246tasman

    246tasman Formula 3

    Jun 21, 2007
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    Will Tomkins
    Mark

    I finally took my 575 engined special out for a reasonable drive and thought I'd let you know that the 17" x 9" straight thru mufflers are plenty quiet enough up to 3000 rpm through the local villages. I'm sure they could be 25% smaller and still be very OK, maybe more.

    The rasp in the 4-8000 range is pretty spine tingling and I don't even miss the induction roar I used to get from the Webers on the old 365 4cam engine.

    Because of the torque available it's really unneccessay to use more than 2000rpm in built up areas and you could maybe even get away no mufflers at all. Maybe I'll try it....Maybe you should try it without mufflers first and see how you go...

    Performance is 'sparkling' and on the dry patches of road it's easy to spin the wheels in 4th. Didn't have enough road to really nail it in 5th & 6th.

    Will
     
  3. Doug

    Doug Formula 3

    Nov 13, 2003
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    #2878 Doug, Nov 14, 2009
    Last edited: Nov 14, 2009
  4. mk e

    mk e F1 World Champ

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    Very cool that your car is driving!

    I'm not going to try without mufflers, but it's good to hear you think the noise isn't too bad with low restriction mufflers.

    When I had the blower motor I found I shifted at about 2500 I town ar there was no real point in reving any higher and keeping the revs down sure does quite things down. This new engioen probably won't have quite the low end the blower motor did or probably not quite what yours has either, but it shouldn't be too bad...I'm guessing about 350 ft-lbs at 2500 and climbing to 500-550 at 6000.
     
  5. mk e

    mk e F1 World Champ

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    I saw that article when it came out...I was about 18 or 20 I guess and in the air force. I remember thinking " Oh I need one of those"....of course I had no money, no place to work on it and no clue how to build something like that.
     
  6. mk e

    mk e F1 World Champ

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    #2881 mk e, Nov 14, 2009
    Last edited by a moderator: Sep 7, 2017
  7. 2dinos

    2dinos F1 Rookie

    Jan 13, 2007
    3,038
    My 4 catalytic converters are prettier - - - NOT! :)

    This is georgeous looking at the project in many different directions. It's a shame Enzo isn't around to see this. Didn't he commend the fellow who put the 2-cam V 12 in a 308?

    What are you going to call this when it's done? Will you leave the "308" on the back?
     
  8. PittsS2APilot

    PittsS2APilot Formula Junior

    Jun 29, 2007
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    Boy those would look great polished up? As far as naming the car... how bout "Helter Skelter"? lol
     
  9. PittsS2APilot

    PittsS2APilot Formula Junior

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    Just considering what kind of stress will be on the exhaust manifold studs with that weight hanging out there vibrating?
     
  10. mk e

    mk e F1 World Champ

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    Thanks.

    I was thinking 458 until stupid ferrari took it. I'll probably do what ferrari did with the laster 208s and just call it a GTS QV with no 308 tag.
     
  11. mk e

    mk e F1 World Champ

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    I don't know....I've never heard of an engien breaking though, if anyhting does go wrong it's usually the hearders cracking. The system will be supported be the muffler mounts too and the slip joint should remove some of the stress caused by trh engine torquing.
     
  12. KKRace

    KKRace Formula 3

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    Hopefully a little room between the headers and the firewall to put a little extra thermal insulation?
     
  13. mk e

    mk e F1 World Champ

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    A little....1/4" maybe.
     
  14. tazandjan

    tazandjan Three Time F1 World Champ
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    Jul 19, 2008
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    Mark- That is going to sound so awesome. Any thoughts yet on a muffler system? You could adapt some Capristo valves and have something that would sound merely great or, at a flick of a remote, cataclysmic.

    Taz
    Terry Phillips
     
  15. mk e

    mk e F1 World Champ

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    #2890 mk e, Nov 16, 2009
    Last edited by a moderator: Sep 7, 2017
    We’ll see if the UPS guys do any better at following directions and actually pick up the cams…they say they will.

    I can’t really weld with little one helping as he’s lost interest in the new sand box so I moved on the fitting up header #3. I'll do my best, but getting useful pics of the installed headers is going to be pretty hard.
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  16. mk e

    mk e F1 World Champ

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    I'm going to try 2 Borla XR-1 racing mufflers and see how it works....I think it will be good.
     
  17. PittsS2APilot

    PittsS2APilot Formula Junior

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  18. mk e

    mk e F1 World Champ

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    Interestingly they are doing the same 6 into 2 into 1 with the collectors as close together as possible and a cone at the end design that Burns recommended for me....of course they are using bigger shorter pipes and doing it neater but the basic design looks the same.
     
  19. Etcetera

    Etcetera Two Time F1 World Champ
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  20. jratcliff

    jratcliff Formula 3

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  21. VIZSLA

    VIZSLA Four Time F1 World Champ
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  22. NeuroBeaker

    NeuroBeaker Advising Moderator
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    Actually, I was born in Alabama... unfortunately, I'm not permitted to translate as this would reveal the secret wisdom of the South to a Northerner. :D

    Sorry about that, David. Is there anything else I could do for you instead? :eek:

    All the best,
    Andrew.
     
  23. VIZSLA

    VIZSLA Four Time F1 World Champ
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    Glasgow doesn't count as southern in this context;)
     
  24. NeuroBeaker

    NeuroBeaker Advising Moderator
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    I'm only temporarily based in Glasgow. ;)

    I was born and raised (until 14) in Huntsville, Alabama - which is a pretty cool place to . Then spent 2 years in Philadelphia, Pennsylvania before coming to the UK. :D

    All the best,
    Andrew.
     
  25. Conquest351

    Conquest351 Karting

    Mar 13, 2008
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    Born and raised in Birmingham, AL myself (just outside in Alabaster actually). Moved to Texas just before I turned 14 and been here ever since. Wow, that was 17 years ago. Guess I'm officially a Texan now.

    Headers are looking fantastic Mark!!!!
     

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