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Rolling Road - 355. Is it worth it ?

Discussion in 'Technical Q&A' started by ferrari355gtb, Oct 29, 2004.

  1. ferrari355gtb

    ferrari355gtb Formula 3

    Nov 3, 2003
    1,600
    UK
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    R
    Is it worth taking my 355 (96 2.7 manual) to a rolling road ? Is there anything they can adjust on the car to make it run smoother/faster/efficiently ? (or is all taken care of through the ECU's - and they need reprogramming)

    Used to be able to take my old carb'd/injections/turbo'd cars to the rolling road and see significant gains (both power and smoothness) afterwards. Has technology moved on now that there is much a mechanic can do versus a computer programmer ?

    Thanks

    Rick
     
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  3. ferrari355gtb

    ferrari355gtb Formula 3

    Nov 3, 2003
    1,600
    UK
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    R
    Bump.

    Anyone ?
     
  4. JSL

    JSL Formula 3

    Jan 5, 2002
    2,212
    California
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    J.S. Leonard
    Sorry, I'm not familiar with the term "rolling road". What exactly do you mean?
    I take my car (97 GTB) on a foothill twisting, rolling road all the time. It is great fun!
     
  5. malibumk

    malibumk Karting

    May 14, 2002
    167
    Malibu, CA
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    Mike Klein
    Scott:
    Rolling Road means Raer Wheel Dynomometer.....to measure rear wheel power. Often used for tuning.
     
  6. Aircon

    Aircon Eight Time F1 World Champ

    Jun 23, 2003
    87,211
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    Peter
    Talking strictly as a novice, i'd say there would be no advantage in doing this. AFAIK there is nothing to adjust. It's not like the good old days. I had a sync done of my inlet butterflies once, which made my car idle a bit better, but that's about all you can do, and you don't need a dyno for that
     
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  8. JSL

    JSL Formula 3

    Jan 5, 2002
    2,212
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    J.S. Leonard
    Thanks, I have never heard that term.
     
  9. T0nyGTSt

    T0nyGTSt Karting

    Jul 31, 2004
    196
    Dynos are useless for cars with a standard non-programmable ECU.

    T.
     
  10. f355b

    f355b Formula Junior

    Jan 23, 2004
    445
    Little Silver,NJ
    the spark plug idea looks good, do a search.
     
  11. ferrarifixer

    ferrarifixer F1 Veteran
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    Jul 22, 2003
    8,520
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    Phil Hughes
    Chassis Dyno's are a good way to wear, break, stress and/or overheat stuff. They're only good for very brief tests, (10mins per hour?) and keeping road testing to a minimum if local road conditions are not suitable.

    Even for engine tuning, they're only mildly helpful for setting a benchmark. On road dynamics of airflow and engine bay thermodynamics change many variables.
     
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  13. Ferrari_tech

    Ferrari_tech Formula 3

    Jul 28, 2003
    1,527
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    Malcolm W
    There's no point putting your 355 on the rolling road, as you say rolling roads were used for tuning / re-jetting carbs - back in the seventies I spent a couple of years with Webber Uk / Ferrari developing the best carb set-up on the earlier Ferraris using a rolling road, and as Phil says, we spent more time replacing headgaskets on cooked engines that re-jetting!!
     
  14. T0nyGTSt

    T0nyGTSt Karting

    Jul 31, 2004
    196
    If you run an ECU like a Motec (no doubt Phil is aware of) - a dyno run then followed by a road tune is probably going to be the best.

    But of course, you need to evaluate if you need a programmable ECU.

    T.
     

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