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Type: Posts; User: NewbBimmerGuy

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    B58: Marty, I'm hearing whispers and rumors that with...

    Marty, I'm hearing whispers and rumors that with the extra boost pressure from a good tune the stock springs at the upper end of the RPM scale are already at / beyond their limits, more lift makes...
  2. S58: The most interesting thing here is that with the...

    The most interesting thing here is that with the mobile architecture BMW has to create artificial differentiation between the different performance / price points of the engine and it becomes...
  3. S58: Maybe the basis of the S58 moves down the line...

    Maybe the basis of the S58 moves down the line for B58 TU2 and the simpler cooling system just becomes the standard but with the smaller bore and longer stroke for the B58?
  4. S58: I'm really curious for the WHY behind a separate...

    I'm really curious for the WHY behind a separate engine for the M cars rather than just extending the TU1 B58 mobile architecture to the next power level. The tiny extra bore and less stroke make...
  5. B58: B58 Exhaust Systems Changes Over The Years?

    Does anyone have the exhaust specs for the B58 engines over the years?

    From the early 340is, to the 340i MPPSK, to the switch to the M340i and X3/X4 M40i?
    --Is the MPPSK exhaust optionally...
  6. B58: Appreciate the detailed response. I tried to...

    Appreciate the detailed response. I tried to "thumbs up" your post, but I don't have enough points to, apparently.

    I get that computer-controlled ignition timing, cam timing, knock sensors,...
  7. B58: Sure, but e85 makes the fueling limitations...

    Sure, but e85 makes the fueling limitations WORSE. You need a lot less ethanol free fuel to hit x HP than you do with high ethanol content fuel. Oxygenated fuel requires more fuel than...
  8. B58: B58 Stock and Aftermarket Ignition Coils

    Does anyone have any information on what ignition coils are used on the B58 engines? Is it the same old part #'s from the same MFGRs as the N55 ignition coils?


    Context: As someone who's new to...
  9. B58: I’m curious why, if the fuel system is no longer...

    I’m curious why, if the fuel system is no longer the limitation with stock turbos, why no one is trying to set records for a stock turbo setup with a highly oxygenated race fuel. All the ethanol...
  10. B58: I'll ask a dumb question, but when most people...

    I'll ask a dumb question, but when most people are making these Built B58s, they're getting heavier duty rods and forged pistons, but are they also going with dished / reverse dome pistons to drop...
  11. B58: +1 How long can an 8HP50 .8HP51 last at these...

    +1 How long can an 8HP50 .8HP51 last at these power levels?

    Adam
  12. B58: From what I can tell, the 2019 and 2020 X3 M40is...

    From what I can tell, the 2019 and 2020 X3 M40is are just using the old TU0 B58 engines and only the m340is are getting the new TU1 variants...


    I’m a bit frustrated and confused by this as I’m...
  13. B58: Where are they getting the extra fuel from for...

    Where are they getting the extra fuel from for this particular car?

    Adam
  14. B58: TU0 vs TU1 B58 Engine Differences in Detail

    I'm looking for more information on the differences between the 1st B58 engines ("Technical Update 0") and the TU1 later engines including what years the 340i and X3 / X4 switch over from TU0 and...
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