Featured Have a look at the Supra's bare chassis and drivetrain

Discussion in 'General Supra Topics' started by Supra93, Jun 5, 2019.

  1. mas921

    mas921 Well-Known Member

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    that's what you get with a -long @$$- I6 :p,, but at least the engine mounts are quite a bit behind the axle. Not front mid-ship/S2000 for sure though
     
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  2. yalpeR

    yalpeR Member

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  3. Pheonix

    Pheonix Well-Known Member

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    Wow so that turbo manifold has only 2 primaries? I though it would be 6 seeing how it's an I6? Never seen a manifold like that before.
     
  4. Pheonix

    Pheonix Well-Known Member

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    #19 Jun 9, 2019
    Last edited: Jun 15, 2019
    2800lbs and you aren't a "street" car any more. We are talking fully stripped interior, fully gutted, passenger seat missing, no AC, no radio, all airbags removed and fully caged up. I think the most common weight reduction mods for a street driven car would be seats, steering wheel, wheels, suspension, full titanium exhaust, and maybe some dry carbon body parts (read very much $$$$), and removal of sound deadening materials. Hopefully we can get close to 3100-3000lbs like that.
     
  5. Nurburgring

    Nurburgring Well-Known Member

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    Manifold is partially integrated in the head itself. Pretty common in latest generation turbo engines from many manufacturers (civic type r, vw gti, toyota ar-series)

    upload_2019-6-9_1-16-2.png
     
  6. Pheonix

    Pheonix Well-Known Member

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    So what if we wanna do a full single turbo build and improve exhaust scavenging? We have to swap out the head for that?
     
  7. Nurburgring

    Nurburgring Well-Known Member

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    For most realistic power goals it probably won’t be necessary. People are doing >600whp on the 1.5 liter Honda engine with integrated manifold (L15B7). We´ll have to see.
     
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  8. kona61

    kona61 Well-Known Member

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    US B58B30O1 head or last gen B58 head. Although, I believe the last gen B58 has different components so the head won't fit without modification.
     
  9. Matador

    Matador Well-Known Member

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    Absolutely not.
     
  10. elpadrino

    elpadrino Well-Known Member

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    Hopefully this kills that side intake talk once and for all.
     
  11. justbake

    justbake Well-Known Member

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    I believe it will be even easier to upgrade to a bigger single with this head. Instead of a full manifold being made, you just need to create a T4/Vband 'adapter' that bolts to head similarly to how the turbine housing connects to the head now
    diag_am64-jpg.jpg
     
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  12. AHP

    AHP Well-Known Member

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    Huh..? That V-band is only to mate the downpipe/cat to the exhaust housing outlet. Considering the manifold, CHRA, internal WG, etc.. is all one cast component, the path of least resistance for a turbo upgrade will be to machine the OEM housings for bigger compressor and exhaust wheels. Also considering the convoluted wastegate/BOV contraption is all integrated, the aftermarket has several problems to solve for outside of re-wheeling the OEM unit.
     
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  13. justbake

    justbake Well-Known Member

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    Huh? There are many turbos that use Vband inlets for their turbine housings and is becoming more and more popular.



    GRT-TBO-353_b450.jpg


    Yeah its a single cast unit but instead of going from head -> turbo, you would go from head -> manifold (I loosely used the term adapter since the manifold is inside the head) -> aftermarket turbo.

    As for the wastegate, this is where flashing the DME comes into play as it has already been done with the current b58.

    Obviously upgrading the turbo's internals is the easiest but that isn't what we are talking about.
     
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  14. AHP

    AHP Well-Known Member

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    I see what you're saying now; I misunderstood your previous post. In that case whether it's V-band or bolted flange doesn't really matter unless space is a big constraint (which could be the case). Then the question is can you cast or fab a head-to-turbo adapter and still have the inlet/outlet land in the same location, for bolt-on simplicity.
     
  15. kona61

    kona61 Well-Known Member

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    I am certain it’s possible. The length of the turbo inlet with the adapter thing is quite long which gives plenty of space to create an adjustment.
     

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