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  1. #26
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    Click here to enlarge Originally Posted by Chris @ ardesign Click here to enlarge
    Meh, up at this altitude, a TRM Stg2 won't spool until 4400-4600RPM.
    ah, stock compression, wasn't accounting for that. But still... Damn good trap..

    trm stage 2 uses a huge SPA 7000 turbo, spooling isnt their strong suit. I'm guessing this was t4 with a big turbine housing. A 6262 will spool as low as 3000 in t3 small turbine trim in a cast manifold. this is reasonable, but still 127!? that might be a stock hg record for the m5x.
    Click here to enlarge

  2. #27
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    Click here to enlarge Originally Posted by dOpEdUpM3 Click here to enlarge
    Nice looking M! Is that your sisters MB?
    both mine sister could not handle rear wheel drive in rain.... c43 is for sale

  3. #28
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    Click here to enlarge Originally Posted by 600whp S4 Click here to enlarge
    mine sister could not handle rear wheel drive in rain.... c43 is for sale
    That really sucks... nice car.

  4. #29
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    @bluejeansonfire,

    You can not compare a Euro S50B30/B32 with a S54 because the Euro S50B30/32 makes a lot more torque,last year mine made 820hp,710Whp,870Nm with 1,3bar(19psi).

  5. #30
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    Click here to enlarge Originally Posted by daytonaM3 Click here to enlarge
    @bluejeansonfire ,

    You can not compare a Euro S50B30/B32 with a S54 because the Euro S50B30/32 makes a lot more torque,last year mine made 820hp,710Whp,870Nm with 1,3bar(19psi).
    Nice
    Click here to enlargeClick here to enlarge

  6. #31
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    Click here to enlarge Originally Posted by daytonaM3 Click here to enlarge
    @bluejeansonfire ,

    You can not compare a Euro S50B30/B32 with a S54 because the Euro S50B30/32 makes a lot more torque,last year mine made 820hp,710Whp,870Nm with 1,3bar(19psi).
    great numbers! But it's not so much about peak. It's more about the shape of the curve. And with a number of other factors. Like turbo choice. I didn't have a s50b32 t67 dyno on hand. But I do know where to quickly get one to compare the extremely similar s54 to the m52b30 frank motor very similar to the OP's US s50.

    Given the s50b32 cams aren't as aggressive as the s54's which do a lot to promote top end power versus bottom torque. You made 870nm at the wheels or is that a crank figure? Regardless it's great numbers. I imagine you made that number with a smaller turbine. It's the right way to do it, spool it early make big torque.

    Those are better peak numbers than an s54 would normally generate in the examples we have, but it's largely about your fuel, turbo sizing, etc can all manipulate the same thing.

    The greater theme of my earlier post is not so much that the euro s50 is a bad motor. But that the US s50 has so many merits as a turbo motor, that it would be a severe waste of time to change to something that would be more complication than improvement. And without any question, the euro s50 is not the service-friendly motor that the m5x family is, or even the s54 has made simple- valve adjustments from hell. And there is still torque loss- in this conversation a peak number alone is kinda abstract, i have not seen torque curves from the solid lifter motors to match what American tuners have done with single vanos engines.
    Last edited by bluejeansonfire; 10-13-2011 at 12:55 PM.
    Click here to enlarge

  7. #32
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    1 out of 1 members liked this post. Reputation: Yes | No
    I use a Bullseye power S372 1.10A/R,it is 870Nm at the wheels.
    The turbo begins to spool at 3000rpm and my engine is a S50B30.

    My torque curve is like this:
    3500rpm:350Nm
    4000rpm:400Nm
    4500rpm:550Nm
    5000rpm:780Nm
    5500rpm:870Nm

  8. #33
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    1 out of 1 members liked this post. Reputation: Yes | No
    I still have to make a lot of assumptions to be able to compare that with anything. But so far, that gets outspooled by the very late-spooling hpf stage 3. Care to buck up and post a dyno sheet?

    here's a dyno sheet for reference of what the hydraulic 3L can do with a donkey turbo
    Attached Images Attached Images  
    Click here to enlarge

  9. #34
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    If you take a look at HPF site,the S54 need 800+whp to get 630ft/lb.
    http://www.horsepowerfreaks.com/part...s/E46_M3/11037

    DaytonaM3 has 710whp and 870Nm(645ft/lb),so it made more torque with less Whp.
    I want to know his torque numbers with 800+whp Click here to enlarge

  10. #35
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    Click here to enlarge Originally Posted by Mikecoupe Click here to enlarge
    If you take a look at HPF site,the S54 need 800+whp to get 630ft/lb.
    http://www.horsepowerfreaks.com/part...s/E46_M3/11037

    DaytonaM3 has 710whp and 870Nm(645ft/lb),so it made more torque with less Whp.
    I want to know his torque numbers with 800+whp Click here to enlarge
    The S54 will make more HP with less torque.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    The S54 will make more HP with less torque.
    Lets see the OP waste money/time on finding a euro motor.
    Click here to enlargeClick here to enlarge

  12. #37
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    The S54 will make more HP with less torque.
    Click here to enlarge Originally Posted by Mikecoupe Click here to enlarge
    If you take a look at HPF site,the S54 need 800+whp to get 630ft/lb.
    http://www.horsepowerfreaks.com/part...s/E46_M3/11037

    DaytonaM3 has 710whp and 870Nm(645ft/lb),so it made more torque with less Whp.
    I want to know his torque numbers with 800+whp Click here to enlarge
    I mean, yes, it does. But we don't know the tuning hardware and methodology but regardless, the turbo is completely different. So comparing this is a little questionable. The s50b30 does have less aggressive cams and thus has this effect even more so. Also, with much of this hardware, you can manipulate boost curves to change power delivery and create a more attractive dyno. Boost can be jacked towards redline to avoid torque dropoff, excessive cylinder pressure in the midrange and ultimately more top end. Fuel choice also plays a role as e85 can take a lot more timing and spools earlier, with enough timing will create better torque.

    It's not so much as the S54 makes less torque than does the s50, though it does, but HPF makes less torque per horse than does Daytona.
    Click here to enlarge

  13. #38
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    Click here to enlarge Originally Posted by bluejeansonfire Click here to enlarge
    but HPF makes less torque per horse than does Daytona.
    But HPF makes more horses per pound-foot of torque.

  14. #39
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    ^ what?!

  15. #40
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    Click here to enlarge Originally Posted by Sorena Click here to enlarge
    ^ what?!
    Because of RPM.

  16. #41
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    Hmm, i don't get it. you are comparing two different units, it's not right and what does it have to do with RPM? I mean of course HPF makes more HP per lb-ft, but in N.M unit it's less.

  17. #42
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    Click here to enlarge Originally Posted by Sorena Click here to enlarge
    Hmm, i don't get it. you are comparing two different units, it's not right and what does it have to do with RPM? I mean of course HPF makes more HP per lb-ft, but in N.M unit it's less.
    Different motors have different characteristics, seems one-sided to only point out a strength of one and leave out strength of another.

  18. #43
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    1 out of 1 members liked this post. Reputation: Yes | No
    it's a circular argument, b/c daytona makes more equal torque to his hp, HPF has a more impressive hp/torque ratio. It's the same statement, twice. Implicitly, if hp=tq, then someone who has more power with less torque makes more hp per unit of torque.

    Honestly, at these power levels, a lot of people prefer less torque(tirespin). Which is why I mentioned many posts ago in this thread that one could spend a lot of money if they wanted a more linear turbo power curve. I sure as hell did. The S54 delivers this as the more sophisticated solid lifter dohc bmw i6. The euro s50 in question here, while very nearly the same design, has milder cams and a lower redline (though modifiable on both counts). This makes it a bit more like the hydraulic lifter engines. But still, it bears the difficulties of parts access and valve adjustments, all while first and foremost delivering higher revs. And this may make it a better motor on some fronts, everything is dependent on goals. The US s50, depending on setup can make more power, but naturally does not.
    Click here to enlarge

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    I saw a dyno sheet at this site from Daytona with 93oct pumpgas numbers.
    it made 615Whp and 732Nm(540ft/lb),15psi , 8000rpm.

    Hpf pumpgas numbers are 580Whp and 450ft/lb,17psi,8000rpm.

  20. #45
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    Click here to enlarge Originally Posted by Mikecoupe Click here to enlarge
    I saw a dyno sheet at this site from Daytona with 93oct pumpgas numbers.
    it made 615Whp and 732Nm(540ft/lb),15psi , 8000rpm.

    Hpf pumpgas numbers are 580Whp and 450ft/lb,17psi,8000rpm.
    absolutely incomparable turbos and even more incomparable turbine housings.
    Click here to enlarge

  21. #46
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    Click here to enlarge Originally Posted by bluejeansonfire Click here to enlarge
    Honestly, at these power levels, a lot of people prefer less torque(tirespin). Which is why I mentioned many posts ago in this thread that one could spend a lot of money if they wanted a more linear turbo power curve.
    In that case one could make a strong argument for the street-ability with high power of centrifugal setups.

  22. #47
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    In that case one could make a strong argument for the street-ability with high power of centrifugal setups.
    lol, my turbo is centrifugal.

    Of course. You should know this well from your car.
    Click here to enlarge

  23. #48
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    Boring thread thus far.
    Click here to enlargeClick here to enlarge

  24. #49
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    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    Boring thread thus far.
    Yeah, this would be many times better if the OP came back and shared a little about his motivations to go euro motor. Or maybe his power goals.
    Click here to enlarge

  25. #50
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    Click here to enlarge Originally Posted by bluejeansonfire Click here to enlarge
    lol, my turbo is centrifugal.

    Of course. You should know this well from your car.
    It is, but maybe I should add belt-driven.

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