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Thread: Autobox gearbox ratios

  1. #1
    I'm part of the furniture Moderator Ian C's Avatar
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    Technical Reference Autobox gearbox ratios

    I've got an automatic Supra...what are the ratios?

    Gearbox:- 2JZ-GTE AUTO 4-spd
    Tyre:- Michelin all patterns 235/45 x 17


    Top Gear gives 27.497 MPH/1000 RPM and a top speed of 192.478 MPH at 7000 RPM

    Engine speeds in top gear:-
    30 MPH = 1091 RPM
    40 MPH = 1455 RPM
    50 MPH = 1818 RPM
    60 MPH = 2182 RPM
    70 MPH = 2546 RPM
    80 MPH = 2909 RPM
    90 MPH = 3273 RPM
    100 MPH = 3637 RPM

    Top Speed in 1 gear = 48.394 MPH
    And changes into 2 gear at 3822 RPM dropping 3178 RPM
    Top Speed in 2 gear = 88.633 MPH
    And changes into 3 gear at 4572 RPM dropping 2428 RPM
    Top Speed in 3 gear = 135.697 MPH
    And changes into 4 gear at 4935 RPM dropping 2065 RPM
    Top Speed in 4 gear = 192.478 MPH


    Gearbox:- 2JZ-GE (NA) AUTO 4-Spd
    Tyre:- Michelin all patterns 235/45 x 17


    Top Gear gives 25.382 MPH/1000 RPM and a top speed of 177.676 MPH at 7000 RPM

    Engine speeds in top gear:-
    30 MPH = 1182 RPM
    40 MPH = 1576 RPM
    50 MPH = 1970 RPM
    60 MPH = 2364 RPM
    70 MPH = 2758 RPM
    80 MPH = 3152 RPM
    90 MPH = 3546 RPM
    100 MPH = 3940 RPM

    Top Speed in 1 gear = 44.672 MPH
    And changes into 2 gear at 3822 RPM dropping 3178 RPM
    Top Speed in 2 gear = 81.817 MPH
    And changes into 3 gear at 4572 RPM dropping 2428 RPM
    Top Speed in 3 gear = 125.261 MPH
    And changes into 4 gear at 4935 RPM dropping 2065 RPM
    Top Speed in 4 gear = 177.676 MPH

    Thinking of putting a manual diff on an autobox? Here you go:

    Gearbox:- 2JZ-GTE AUTO 4-spd w/UK MANUAL DIFF
    Tyre:- Michelin all patterns 235/45 x 17


    Top Gear gives 33.079 MPH/1000 RPM and a top speed of 231.551 MPH at 7000 RPM

    Engine speeds in top gear:-
    30 MPH = 907 RPM
    40 MPH = 1209 RPM
    50 MPH = 1512 RPM
    60 MPH = 1814 RPM
    70 MPH = 2116 RPM
    80 MPH = 2418 RPM
    90 MPH = 2721 RPM
    100 MPH = 3023 RPM

    Top Speed in 1 gear = 58.218 MPH
    And changes into 2 gear at 3822 RPM dropping 3178 RPM
    Top Speed in 2 gear = 106.625 MPH
    And changes into 3 gear at 4572 RPM dropping 2428 RPM
    Top Speed in 3 gear = 163.244 MPH
    And changes into 4 gear at 4935 RPM dropping 2065 RPM
    Top Speed in 4 gear = 231.551 MPH

    Gearbox:- 2JZ-GTE AUTO 4-spd w/JAP MANUAL DIFF
    Tyre:- Michelin all patterns 235/45 x 17


    Top Gear gives 31.732 MPH/1000 RPM and a top speed of 222.122 MPH at 7000 RPM

    Engine speeds in top gear:-
    30 MPH = 945 RPM
    40 MPH = 1261 RPM
    50 MPH = 1576 RPM
    60 MPH = 1891 RPM
    70 MPH = 2206 RPM
    80 MPH = 2521 RPM
    90 MPH = 2836 RPM
    100 MPH = 3151 RPM

    Top Speed in 1 gear = 55.847 MPH
    And changes into 2 gear at 3822 RPM dropping 3178 RPM
    Top Speed in 2 gear = 102.283 MPH
    And changes into 3 gear at 4572 RPM dropping 2428 RPM
    Top Speed in 3 gear = 156.596 MPH
    And changes into 4 gear at 4935 RPM dropping 2065 RPM
    Top Speed in 4 gear = 222.122 MPH

    -Alex
    I love my job. It pays for my Supra.

  2. #2
    Nil Satis Nisi Optimum Club Member den1's Avatar
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    Auto Geabox oil level check

    This is very interesting!
    But
    Would anybody know how to correctly check the Auto Gearbox oil level?

    Does the engine have to be running?
    Or Static?

  3. #3
    big twin uk spec Club Member Stephen G's Avatar
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    engine running

  4. #4
    Nil Satis Nisi Optimum Club Member den1's Avatar
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    Quote Originally Posted by slutdog View Post
    engine running
    Normal RPM Idle
    or
    Higher (1800 RPM)

  5. #5
    Legendary Club Member Terminator's Avatar
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    Hot box with normal idle. Follow the correct procedure exactly or you will get the reading wrong.

  6. #6
    Nil Satis Nisi Optimum Club Member den1's Avatar
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    Is there a possibility of someone making a something like this a "Sticky" in the basic technical section.

    How to check the Auto Gearbox oil
    ( The correct procedure )

  7. #7
    ImportPimp Club Member Nic's Avatar
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    Quote Originally Posted by den1 View Post
    This is very interesting!
    But
    Would anybody know how to correctly check the Auto Gearbox oil level?

    Does the engine have to be running?
    Or Static?
    Procedure should be in service manual here:

    http://www.turbosupras.com/pages/en/...80/a80tsrm.htm
    Nic

  8. #8
    Posting is my life! Club Member Kaan W's Avatar
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    Interesting... Has anyone tried a Uk spec manual diff on a GTE auto?

    Would it bolt up to the prop or is it a different flange? I am willing to test the acceleration difference if I can find one....

  9. #9
    '93 SZ-R Aero NA-T Moderator Josh42's Avatar
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    The flange is different mate but you can mate the front half of the manual prop with the rear half of the auto prop.....

    Or get a custom prop made up

  10. #10
    Posting is my life! Club Member Kaan W's Avatar
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    Quote Originally Posted by Josh42 View Post
    The flange is different mate but you can mate the front half of the manual prop with the rear half of the auto prop.....

    Or get a custom prop made up
    Or the front half of an auto prop with the rear half of a manual prop If I can find a manual diff and prop cheap enough to modify i'll have to experiment.

    Also are the manual differentals stronger?

  11. #11
    '93 SZ-R Aero NA-T Moderator Josh42's Avatar
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    Yeah, that!

  12. #12
    Do Luck owning Club Member Swampy442's Avatar
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    Its the same diff, just a different ratio so no, not any stronger.
    I would gladly pay you 10 to never log onto this forum again, and I am serious. Scott M

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  13. #13
    Is a short fused Club Member tony tt's Avatar
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    Interesting. Off to look at manual diffs
    Dream like you'll live forever, live like you'll die today.
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  14. #14
    Dark Wizard Club Member David P's Avatar
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    Before folks work out that none of them are rolling on 235 45 17's, these links might save a lot of lazy questions.

    http://www.willtheyfit.com/

    http://www.differentials.com/technic...tio-calculator

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