Need more power in your 308? | Page 2 | FerrariChat

Need more power in your 308?

Discussion in '308/328' started by Newman, Nov 18, 2015.

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  1. nerofer

    nerofer F1 World Champ

    Mar 26, 2011
    12,085
    FRANCE
    But tempting it is indeed...

    Rgds
     
  2. hyenahf

    hyenahf F1 Rookie

    May 25, 2004
    2,603
    thats pretty darn cool. i say you should try to match it to a 355 transaxle so you would have to extend the wheel base?
     
  3. theunissenguido

    theunissenguido F1 Rookie
    Owner Silver Subscribed

    Jan 21, 2004
    2,749
    Argent/Brasil
    Full Name:
    Guido
    How it looks at the transmission side ?

    Guido
     
  4. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
    14,524
    Canada
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    Newman
    I would just get an Xtrac sequential box instead.
     
  5. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
    14,524
    Canada
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    Newman
    Measurements are promising on the 308 box BUT one small difference is a big issue. The crank centerline is 3/4" higher than the 308 crank centerline which causes the transfer gear arrangement to simply not work. I could mill the block girdle down to lower the centerline I guess. Interesting....
     
  6. nerofer

    nerofer F1 World Champ

    Mar 26, 2011
    12,085
    FRANCE
    See? You are already taking measurements...


    (I'm certainly not an expert, nor an engineer or a mechanician of any sort, but this engine being made for racing, I would have thought that the crank centerline would have been very low? Especially as the 3x8 engines crank are high, this due to the trans arrangement?)

    Rgds
     
  7. Ferraridoc

    Ferraridoc F1 World Champ
    Owner Silver Subscribed

    Jun 20, 2012
    17,286
    Gold Coast, Aust.
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    Patrick
    Yes, but completely different installation. The engine would have been designed to fit an Indy chassis/gearbox - and dry sump, stressed member, and probably suspension pick-ups.
     
  8. hyenahf

    hyenahf F1 Rookie

    May 25, 2004
    2,603
    I have a straight cut sequential 6peed in a race car. Probably the last thing you want to run on the streets. Xtrac=big $$$ but certainly better using a 308 transaxle. I wouldnt worry so much on hp but the torque output. gearboxes are rated by torque capacity which shred gears and split cases.

    Yes the single worse thing about the 308 n boxers dynamically speaking. The heavy lump of motor is pearched up high on top of the trans with gears needed to get back down to the input shaft. They finally got it right with starting with 288gto Mondialt/348 with the input shaft properly located enabling the motors to be mounted about 4-5 inches lower

    Regards.
     
  9. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
    14,524
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    Newman
    I understand the pros and cons of the Xtrac and other race boxes and what im looking for IS craziness, a car that you can only take in limited doses that scratches that itch.
     
  10. Newman

    Newman F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 26, 2001
    14,524
    Canada
    Full Name:
    Newman
    #35 Newman, Nov 20, 2015
    Last edited by a moderator: Sep 7, 2017
  11. Albert-LP

    Albert-LP F1 Veteran
    Owner Rossa Subscribed

    Sep 1, 2010
    8,187
    around Modena, Italy
    Full Name:
    Alberto Mantovani
    Newman, what is the expected life of that engine, in hours or miles?

    Thanks.

    ciao
     
  12. nerofer

    nerofer F1 World Champ

    Mar 26, 2011
    12,085
    FRANCE
    675 hp for 3500 cm3 is about 190 bhp per litre...3.500 miles / 5.500 kms between revisions?

    Rgds
     
  13. GrayTA

    GrayTA F1 World Champ
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    Jun 25, 2006
    15,130
    Deep South
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    PDG
    I just can't imagine a car the size/weight of a 308 putting down that much power being streetable. I am sure it could be done, but Holy Crap that would be stupid fast!!!



    PDG

    Sent from my SM-G900P using Tapatalk
     
  14. smg2

    smg2 F1 World Champ
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    Apr 1, 2004
    16,471
    Dumpster Fire #31
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    SMG
    Yeah painfully so, the supercharged 3.5L I built a couple yrs ago was in the mid 700's and a couple things became apparent very very quickly. First there is not enough gears or proper gear ratios in the box for that level of power, second 0-100-0 will happen in just at or under 10secs! after 20min of hot rodding around your neck really starts to hurt from the G-forces. Tire life is measured in minutes, and the brakes are never big enough. It also plants a permanent stupid grin on your face!

    Oh and sometimes helicopters will follow you if you're having to much fun!
     
  15. nerofer

    nerofer F1 World Champ

    Mar 26, 2011
    12,085
    FRANCE
    Now I'm really interested...

    (even if I am usually a fervent ambassador of non-modified, 100% original OEM cars...)

    Rgds
     
  16. TacElf

    TacElf Formula 3
    Owner

    Aug 15, 2010
    1,719
    Seattle area
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    Jeff
    Given the design of the gearbox/transaxle and assuming the whole thing can support the power/torque, is there even a solution for this which utilizes the current design? Sure, throw enough money at something is one thing, but there are physical constraints to think about, right?

    That does sound like fun ;)
     
  17. INTMD8

    INTMD8 F1 Veteran
    Owner Silver Subscribed

    Jun 10, 2007
    6,817
    Lake Villa IL
    Sounds awesome! I'll pay for a ride when it's done :D
     
  18. hyenahf

    hyenahf F1 Rookie

    May 25, 2004
    2,603
    Sounds great.... If anyone can sort it out it would be you. Looking forward to this insanity
     

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