Z32 Speed Check

Discussion in 'Technical' started by Neddey, Mar 30, 2021.

  1. Neddey

    Neddey Member

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    Am driving a 1993 TT, 2+2 ZX auto, in overdrive. Tacho reads 6550 RPM. How fast am I going??
     
  2. zx299

    zx299 Well-Known Member

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    You are dreaming ........ a TT auto is not capable of reaching 6550 rpm in overdrive :rolleyes:

    Assuming you were able to manage to do the impossible, you would be doing a theoretical speed of a smidgeon over 304km/hr :eek:
     
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  3. Neddey

    Neddey Member

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    1 How would you know what it is capable of if you have never been there?
    2 Not too far off!
     
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  4. beaver

    beaver southern zeds

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    @ a tad below light speed, sure the tacho is right, did time stop. :)
     
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  5. Neddey

    Neddey Member

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    Actually, the OMNI on-line calculator using 64.9 cm on-road tyre diameter and the J-Spec TX ratios is pretty close.
     
  6. IB

    IB ?????

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    How many killer wasps would you need to get to those rpm in overdrive ( torque converter locked up)?
     
  7. MickW

    MickW Carntry member...

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    I'm guessing here but either your tailshaft has broken or your transmission is fuct or you're funning with us :D
    If not, go you just - GO YOU! :)
     
  8. MickW

    MickW Carntry member...

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    Good point, an always overlooked point.
     
  9. NI85

    NI85 Member

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    According to my calculator I did in excel.
    At the given RPM and Overdrive (0.694) using 225/50/16 tires with Turbo diff gives 303.99 kph. The Non Turbo diff gives 274.88kph.
     
  10. Neddey

    Neddey Member

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    Not too far off. Try with 275/35/18 tires
     
  11. Neddey

    Neddey Member

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    None of the above Mick. There is quite a personal and technical story here but I am not going to post it due to the inevitable pile-on from the doubters and naysayers, although comments about their experience from anyone who has driven a car at serious high speed, >200kph, road or track, would be welcome.

    I can say that my high speed driving and accident avoidance training was carried out formally over 4 days, by an NT Highway Patrol officer at the Hidden Valley racetrack in Darwin who boasted that he regularly averaged >150kph between Alice Springs and Darwin.
     
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  12. NI85

    NI85 Member

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    With the diameter of 275/35/18. 283kph non turbo diff and 313kph for the turbo diff
     
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  13. MickW

    MickW Carntry member...

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    That's why he looks younger than us, good on him I say! :D
     
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