News

Testarossa fast speed read issue

Discussion in 'Boxers/TR/M' started by pv908, Apr 12, 2005.

  1. pv908

    pv908 Karting

    Oct 11, 2004
    126
    Sydney
    Full Name:
    Paul V
    Cheers,

    My 89 Testarossa (England Delivery) has a speedometer which I believe says I am going 15-20% faster than I really am. I seem to reach "100 MPH quite often".

    I have read the old threads, and they concentrate on intermittent readings. This works fine but reads speed faster than it should.

    The odometer also clocks up a mile before I have actually done a mile. Around 1350 yards.

    Has anyone advice. My mechanic wants to pull the speedo out of the dashboard.

    PV
     
  2. To remove this ad click here.

  3. GaryReed

    GaryReed F1 Rookie
    Silver Subscribed

    Feb 9, 2002
    3,076
    Seattle
    Full Name:
    Gary
    You say that your TR was "delivered in England."

    Euro Ferraris have odometers that record Kilometers driven, not miles.
     
  4. pv908

    pv908 Karting

    Oct 11, 2004
    126
    Sydney
    Full Name:
    Paul V
    Gary,

    England uses miles not kilometres. I brought the car to Australia and we use kilometres here.

    Trust me, I know the difference.

    Paul V
     
  5. Auraraptor

    Auraraptor F1 World Champ
    Lifetime Rossa Owner

    Sep 25, 2002
    11,491
    MO
    1093.6yrds in a kilometer.
     
  6. Jdubbya

    Jdubbya Two Time F1 World Champ
    Silver Subscribed

    Dec 28, 2003
    24,006
    PNW
    Full Name:
    John

    You caught that just in time!
     
  7. To remove this ad click here.

  8. pv908

    pv908 Karting

    Oct 11, 2004
    126
    Sydney
    Full Name:
    Paul V
    Thanks,

    These facts are great, but does anyone understand the technical issue I am facing or know how it can be rectified.

    We have lots of speed cameras over here and I just want to get the thing reading properly.

    regards

    PV
     
  9. steve f

    steve f F1 World Champ

    Mar 15, 2004
    12,030
    12cylinder town
    Full Name:
    steve
    buy a road angel they are more accurate than speedos
     
  10. Wolfgang

    Wolfgang F1 World Champ
    Lifetime Rossa

    Mar 8, 2003
    16,743
    Heidelberg, Germany
    Full Name:
    Wolfgang
    Have you changed the wheels???????
    16" to 18" ??????
    If yes, this could be the answer.

    Wolfgang
     
  11. pv908

    pv908 Karting

    Oct 11, 2004
    126
    Sydney
    Full Name:
    Paul V
    Thanks, the rims and rubber are standard.
     
  12. To remove this ad click here.

  13. spider348

    spider348 Formula 3
    Silver Subscribed

    Nov 3, 2003
    1,168
    MA
    Full Name:
    John
    Pv908, sounds like your speedometer head needs to be serviced. I am not sure if the gauge can be calibrated. My current Ferrari, 348 spider, former 308 and TR all had “optimistic” speedometers. Generally around +5~10% max. Your unit is reading in excess of 20% error!
    As an interesting side note, when I had my former Ferrari speedometer serviced I purchased a “Euro” speedometer cheap for the 6 weeks it took to get the original back. The “Euro” unit was far more accurate! Well within 5%. Good luck! John.
     
  14. steve f

    steve f F1 World Champ

    Mar 15, 2004
    12,030
    12cylinder town
    Full Name:
    steve
    well i thought they only fitted the fast reading speedos in 8 cylinder ferrari's as they was not needed in the 12 cylinder rear engined car as they are very fast cars
     

Share This Page