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  1. B58: Nice!! I want one and I don't even have a B58...

    Nice!!
    I want one and I don't even have a B58 engine BMW, yet.
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    General: So if what we are hoping is true about the...

    So if what we are hoping is true about the different exhaust rocker ratios of the N52 and N55 engine,
    Here is my calculations-

    N52 exhaust 9.7mm lift with 1.66:1 rocker ratio, =5.84337mm cam...
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    General: My thoughts exactly. Interesting is the use of...

    My thoughts exactly. Interesting is the use of N55 intermediate rockers on a N52.

    Might have to order up some N55 intermediate rockers and mount them on my N52 on the engine stand and measure the...
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    B58: Sorry everyone. I have been swamped with work and...

    Sorry everyone. I have been swamped with work and no time for the fun projects. I will finally have some time off starting later next week.

    I have 2 parts machined to different specs and will...
  5. Reverse rotation, that will make for some nice...

    Reverse rotation, that will make for some nice packaging.
    I want that.
  6. KTM X-Bow is pretty amazing. Imagine with a...

    KTM X-Bow is pretty amazing. Imagine with a turbo or SC.
  7. N55: Nice, now that's what I'm talking about.

    Nice, now that's what I'm talking about.
  8. B58: 59582

    59582
  9. B58: BW EFR 8474!!

    BW EFR 8474!!
  10. B58: 59581

    59581
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    N54: E85- 681 wHP, impressive +99 wHP gain with only...

    E85- 681 wHP, impressive +99 wHP gain with only additional +2psi boost!! E85 rocks.
  12. B58: 1st Blown Supra A90 B58 Engine

    Limited information but it was bound to happen.
    EFR turbo max 27psi and fuel system max'ed out at 24psi.
    Turbo made 25psi at 3000 rpm.
    Built engine next week and with 800ish wHP.
    No information...
  13. B58: For a visual of what I'm talking about, check out...

    For a visual of what I'm talking about, check out this picture. Ignore the labels, look at the increased lift and duration and area under the curve.

    59556
  14. B58: Interesting looking at the Mini head numbers. ...

    Interesting looking at the Mini head numbers. For the stock head with nearly the same size intake valve as the B58 head, we see-
    0.25" (6.35mm) lift- 163cfm
    0.30" (7.62mm) lift- 178cfm
    0.35"...
  15. B58: On the exhaust side you can 'pocket port' it and...

    On the exhaust side you can 'pocket port' it and open the 2 outlet ports.
    And then there is always 'Extrude Hone'.

    The 'headifold' is like using a SteedSpeed exhaust turbo manifold with even...
  16. B58: 59554

    59554
  17. B58: Look at this Mini head. Stock head has 29.8mm...

    Look at this Mini head. Stock head has 29.8mm intake valve.

    https://www.BoostAddict.com/images/imported/2019/10/image__58412142619756212801280-1.jpg?c=2
  18. B58: Head on bench is testing the intake side....

    Head on bench is testing the intake side.
    Remember these B58 engines/heads have the smallest bore diameter- 82mm, and smallest intake valves size- 30mm, of the various 3L engines, N52, N54, N55 and...
  19. B58: From another thread. B58 has small valves, that...

    From another thread. B58 has small valves, that hurts flow.
  20. B58: But you have said all along, 'flow number don't...

    But you have said all along, 'flow number don't really matter'.
  21. B58: We want more!!

    We want more!!
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    B58: Yes these will work on the 2020 Supra MKV!!

    Yes these will work on the 2020 Supra MKV!!
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    B58: Picked these up from the machinist. Added some...

    Picked these up from the machinist.
    Added some Bling.

    Next is to install them on the B58 head and take measurements.
    Each one is machined differently to see which one works better.

    59482
  24. General: Beautiful car from every angle other than the...

    Beautiful car from every angle other than the front. Side and rear 3/4 angles look great.

    Back to the design studio for the front center air intakes.
  25. N54: Your hybrid a/c-HPFP is cool. Great thinking...

    Your hybrid a/c-HPFP is cool. Great thinking outside the box.
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