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    2 out of 2 members liked this post. Yes Reputation No

    Thumbs up HPF TRACK M3 9,000 RPM DYNO PULL at 15psi

    A couple things of note... This was with the HPF turbo kit, 6766 turbo and dual valve springs. The powerband is extremely flat and long easily making gobs of power above 8,000rpm. There's no point on the track where you won't be able to lay into the throttle with immediate response. There are is no power delay as a result of the drive by wire since it has been removed. With 110 octane and high compression the sweet spot was only 15psi. We will run C16 later and turn the boost up.



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    What did you do to the motor to rev it out to 9k rpm? Power looks a bit wavy up there, why is that?

    What compression is this running?
    Click here to enlarge

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    Click here to enlarge Originally Posted by dzenno Click here to enlarge
    What did you do to the motor to rev it out to 9k rpm? Power looks a bit wavy up there, why is that?

    What compression is this running?
    he'll never tell you, i've tried. lets just say 15psi is massive boost

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    I see your posting numbers again with 5 smoothing. Care to share the results with zero smoothing? What compression are you guys running? High could mean a lot of things... It's good to know that power isn't dropping off above 8k but I wouldn't say gobs of power, kinda seems to stay the same. Sorry for the criticism, thanks for sharing the results. Looking forward to seeing the results at the track.

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    [QUOTE=dzenno;280930]What did you do to the motor to rev it out to 9k rpm?That is a big secret!!!!!!!!!!!
    Power looks a bit wavy up there, why is that?Maybe he will answer this

    What compression is this running?THAT is also a big secret!!!!!!!!!!!!

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    No answers huh? Nice powerband just a bit wavy.....

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    I think this will make a substantial difference on the bigger turbo packages. The torque seems to fall off a bit too much with that turbo at 8k+ to make a big difference in the horsepower but the powerband is clearly wider and will allow for drops after shifting into a meatier area.
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    9000 RPM seems about right for the power shown on the graph.

    Drag racing cars usually run 300-500 past peak power as a shift point.

    Road racing cars are in the same area from a purely acceleration standpoint, but it's useful to have another 500rpm on top to stretch a gear so you don't have to shift before a corner. Well...that's for gasoline engines, Diesels are a little bit different...
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    Isn't it a bit dangerous to rev it to 9,000? BMW P54B32 revs to 8,400, and more importantly that's N/A.

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    Click here to enlarge Originally Posted by Sorena Click here to enlarge
    Isn't it a bit dangerous to rev it to 9,000? BMW P54B32 revs to 8,400, and more importantly that's N/A.
    Not if it is built for it.

    The P54 is likely limited by class regulations more than anything else.
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    Click here to enlarge Originally Posted by Sorena Click here to enlarge
    Isn't it a bit dangerous to rev it to 9,000? BMW P54B32 revs to 8,400, and more importantly that's N/A.
    An easy way to find out is to simply throw a timing wheel on the front and back of the crankshaft to measure how much it twists under load. That's how ATI custom designs dampers for Nascar teams. The only issue is having a way of measuring crank position in 0.1 degree increments. That takes some special equipment.

    FYI, Nascar engines have higher piston speeds, and greater amplitude of harmonic resonance than F1 engines.
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    What is the piston speed of a NASCAR engine?
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    What is the piston speed of a NASCAR engine?
    Both F1 V8's (2005-2008) and NASCAR have around ~25-26 Meter/second Piston speed. S54's pistons at 9000 rpm do 27.3 Meter/Second!!

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    And also with 15psi of boost and a CR above 8:1, S54 has at least 4.16:1 more effective compression ratio than NASCAR. Poor pistons lol

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    Click here to enlarge Originally Posted by Sorena Click here to enlarge
    Both F1 V8's (2005-2008) and NASCAR have around ~25-26 Meter/second Piston speed. S54's pistons at 9000 rpm do 27.3 Meter/Second!!
    We prefer feet per minute. At 9000 rpm it will be: 5374.0

    Here is a list of the top 5 highest production piston speeds:

    1. Honda S2000:
    Engine Code: F20C1
    Bore/Stroke: 3.43" X 3.31"
    Redline: 9000rpm
    Piston Speed: 4965 Ft/min

    2. Lamborghini Gallardo
    Engine Code: N/A
    Bore/Stroke: 3.25" X 3.65"
    Redline: 8000rpm
    Piston Speed: 4866.67 Ft/min

    3. Acura Integra Type R
    Engine Code: B18C5
    Bore/Stroke: 3.19" X 3.43"
    Redline: 8400rpm
    Piston Speed: 4802 Ft/min

    4. BMW M3 (Germany)
    Engine Code: S54
    Bore/Stroke: 3.43" X 3.58"
    Redline: 8000rpm
    Piston Speed: 4773.33 Ft/min

    5. Honda S2000 2004
    Engine Code: F22C
    Bore/Stroke: 3.43" X 3.57"
    Redline: 8000rpm
    Piston Speed: 4760 Ft/min

    Definitely high...
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    Click here to enlarge Originally Posted by dzenno Click here to enlarge
    What did you do to the motor to rev it out to 9k rpm? Power looks a bit wavy up there, why is that?

    What compression is this running?
    We only added valve springs. The power is wavy due to very high compression with boost on top. We need to run a higher octane fuel than 110 octane to really see the benefits of this setup. VP Racing came by and are most likely going to sponsor both race cars so we should be doing well on the fueling. Click here to enlarge

    Chris.
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    1 out of 1 members liked this post. Yes Reputation No
    you should run e85 or e100 or a blend of those with c16, lots more power to be had!

    http://www.modularfords.com/f17/e85-...esults-165771/

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    Click here to enlarge Originally Posted by HPF Chris Click here to enlarge
    We only added valve springs. The power is wavy due to very high compression with boost on top. We need to run a higher octane fuel than 110 octane to really see the benefits of this setup. VP Racing came by and are most likely going to sponsor both race cars so we should be doing well on the fueling. Click here to enlarge

    Chris.
    So you are going to run leaded?

    Isn't time to look into cams?
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    Click here to enlarge Originally Posted by wtfmateim65 Click here to enlarge
    you should run e85 or e100 or a blend of those with c16, lots more power to be had!

    http://www.modularfords.com/f17/e85-...esults-165771/
    Yes there is a crap ton more power to be had. This is only 15psi. Any more boost and we lost power with 110 leaded.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    So you are going to run leaded?

    Isn't time to look into cams?
    I still don't believe the cams are the limiting factor even at 1,000rwhp. I still think our main issue in making more power in both cars is fuel. We will shortly be trying better fuels.

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    Click here to enlarge Originally Posted by HPF Chris Click here to enlarge
    We only added valve springs. The power is wavy due to very high compression with boost on top. We need to run a higher octane fuel than 110 octane to really see the benefits of this setup. VP Racing came by and are most likely going to sponsor both race cars so we should be doing well on the fueling. Click here to enlarge

    Chris.
    lucky

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