2020 Supra Documents Added to TIS

Discussion in 'General Supra Topics' started by Jeff Lange, Jul 4, 2019.

  1. Jeff Lange

    Jeff Lange Well-Known Member

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    Repair manual, New Car Features, Collision Repair, etc., has been added to TIS as of today (the repair manual was actually posted earlier with the B46, etc., but then removed, it's back with only the B58 listed).

    If you want to take a look you'll need to have or buy an account.

    http://techinfo.toyota.com/

    Jeff
     
  2. OP
    OP
    Jeff Lange

    Jeff Lange Well-Known Member

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    #2 Jul 4, 2019
    Last edited: Jul 4, 2019
    Quick notes:

    • Full engine model is B58B30M.
    • Power is listed as [email protected] to 6500, which is interesting. Flat torque curves are common these days, but a flat power curve almost always means it is being limited by the ECU and/or being under stated.
    • Doesn't require premium fuel (87 octane AKI or higher).
    • "Toyota Genuine Motor Oil SN 0W-20 C5 for GR Supra" engine oil is specified, 0W30 is also acceptable.
    • BMW Frostox HT-12 engine coolant is specified.
    • Crank and rods are forged of course.
    • Steering wheel is 373 mm
    • Automatic Gearbox Oil ATF 3+ transmission oil is specified.
    • Exterior mirrors are heated, auto-dumming and have power folding.
    • Canada/US curb weight is listed at 3397 lbs.
    • Mexico curb weight is listed at 3461 lbs.
    • Fuel tank capacity is 52L
    • Canada/US model code: model code: DB43L-ZRLA, Grade: RZ.
    • Mexico model code: DB41L-ZRLW, Grade: RZ.
    • Front brakes: 40/44mm piston size, 348x36mm 2-piece floating rotors
    • Rear brakes: 44mm piston size, 345x24mm 2-piece floating rotors
    • DOT4 brake fluid is specified.
    • Rear differential is a BMW 215LWS model with 3.15:1 final drive.
    • BMW Hypoid Axle Oil G4 is specified for the differential.
    • Heated power seats with a memory system on the driver's seat.
    • A spare tire is not provided, only a repair kit.
    • Front wheel alignment: toe-in: 0.27° +/- 0.20°, camber: -1.63° +/- 0.50° w/o(AVS), -1.75° +/- 0.50° w(AVS), caster: 7.58° +/- 0.50°, steering axis inclination: 17.35°. Toe is adjustable, camber is adjusted by replacing the steering knuckle.
    • Rear wheel alignment: toe-in: 0.23° +/- 0.20°, camber: -1.83° +/- 0.42° w/o(AVS), -2.00° +/- 0.42° w(AVS). Toe is adjustable.
    I'll edit this post to add anything I think is interesting as I come across it.


    Jeff
     
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  3. HcNine-Six

    HcNine-Six Well-Known Member

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    Appreciate the update!

    I have access to TIS and been checking it a few times a week.

    Thanks!
     
  4. s219

    s219 Well-Known Member

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    Interesting -- BMWs with the B58 list 89 octane as the minimum. I wonder how much the max HP number is dependent on this. The engines will adjust timing based on octane (or rather, detection of detonation related to octane) so it's conceivable this plays into the rated HP number. Makes me wonder if the "low" 335HP number for the Supra's B58 is tied to the lower octane limit.
     
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  5. dvq

    dvq Member

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    I was wondering about this, because I've seen the Toyota diff described as an "electronic active limited slip differential" with the capability to "fully lock" the diff "instantly".

    From what I can find on the 215LW (Spline) is an open diff -- and I've read the Supra isn't getting the M Sport Diff.

    Does anyone have any other technical details?
     
  6. kona61

    kona61 Well-Known Member

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    I do not have any documents, but the car definitely has a LSD. It would not be able to slide like it does without one.
     
  7. OP
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    Jeff Lange

    Jeff Lange Well-Known Member

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    "The rear differential carrier assembly used with the electronically controlled limited slip differential connects to the left and right drive shafts via multiplate wet clutches. The clutch is intermittently and steplessly controlled by the electronic control motor in response to driving conditions."

    The Supra uses an electronic torque vectoring LSD. 215LWS is the M Sport differential.

    Jeff
     
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  8. MA617M

    MA617M Well-Known Member

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    Doesn't sound like a torque vectoring unit, merely the lock up of the lsd plates are controlled electronically?
     
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  9. BRX

    BRX Well-Known Member

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    It's Torque Vectoring similar to how Auto LSD works on Toyota Trucks. It uses the brakes to prevent wheel slippage to "simulate" an LSD in an offroad situation rather than an actual LSD on the street.

    I assume the A90 diff is electronically controlled to simulate a mechanical torque vectoring diff by utilizing sensors to detect when to engage/disengage the clutches.
     
  10. Sprockett

    Sprockett Member

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    Hey Jeff,

    Is there anything documented about available alternate steering knuckles to adjust camber and what they accomplish?

    Thanks!
    Ryan
     
  11. OP
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    Jeff Lange

    Jeff Lange Well-Known Member

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    There are part numbers for other knuckles and how much camber they will adjust it by, is that what you mean?

    Jeff
     
  12. Sprockett

    Sprockett Member

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    Hi Jeff,

    Yes thanks. I know the M2 knuckles amounted to squat for camber. What are these claiming?
     
  13. OP
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    Jeff Lange

    Jeff Lange Well-Known Member

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    Generally speaking they're for small adjustments in the factory range, not for actually changing the camber. I haven't seen the M2 knuckle information, but I assume they're probably similar.

    For the Supra:

    LH Side
    Standard - 43212-WAA01 (BMW 3121 6 878 613)
    -30' (-0.50°) - 43212-WAA02 (BMW 3121 6 877 201)
    +30' (+0.50°) - 43212-WAA03 (BMW 3121 6 877 203)

    RH Side
    Standard - 43211-WAA01 (BMW 3121 6 878 614)
    -30' (-0.50°) - 43211-WAA02 (BMW 3121 6 877 202)
    +30' (+0.50°) - 43211-WAA03 (BMW 3121 6 877 204)

    Jeff
     
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  14. Sprockett

    Sprockett Member

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    Am I reading that right? Supposedly provide an additional -0.5 degrees? That’s actually a lot. Any idea on cost?
     
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  15. kona61

    kona61 Well-Known Member

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    All I will say is this: If camber is what you're looking for, don't bother with new knuckles. Just buy some camber plates or coilovers. The geometry alterations will be negligible and the cost will be much more reasonable, not to mention labor to install them.
     
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