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Thread: N55 Revealed

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    N55 Revealed

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    BMW’s current N54 series straight-six engine is one of the most praised engines in the industry today, having taken out the coveted International Engine of the Year award last year and appearing in a vast array of BMW models. With the unveiling of the new 5-series GT last week, BMW has announced a new variation of the 3.0L engine which will debut in the crossover at the end of the year.

    The N54 features a twin-turbocharging system, as well as direct-fuel injection and BMW’s own Valvetronic technology, and in its most potent configuration develops up to 326hp (243kW) at 5,800rpm and 332lb-ft (450Nm) of torque from as low as 1,500rpm. BMW’s new variation on the engine, labeled the N55, is based on the same basic engine block and valve system but only sports a single turbocharger. It is the world’s first engine to combine turbocharging, direct fuel injection and fully variable Valvetronic valve management developed by BMW.

    Peak output is still a healthy 306hp (225kW) at 5,800rpm and 295lb-ft (400Nm) of torque from an even lower 1,200rpm. Furthermore, the new N55 is also said to be more fuel-efficient than the N54 though no independent test results have been produced.

    As previously mentioned, the N55 engine will debut in the 535i 5-series GT along with an eight-speed automatic transmission. This model will be able to accelerate from 0-100km/h in around 6.3 seconds and is rated at 26mpg (9L/100km) in fuel economy.

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    lmao, they made a smiilar stupid intake track around the block, pancaking it. also in that last pic, isnt that the v8 turbo set up? i see 4 exhaust ports on each side. i believe the two semi-circles closer to us is where the second turbo goes.
    Last edited by oddjob2021; 01-22-2010 at 10:16 AM.
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    2007 335i Coupe
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    Click here to enlarge Originally Posted by oddjob2021 Click here to enlarge
    lmao, they made a smiilar stupid intake track around the block, pancaking it. also in that last pic, isnt that the v8 turbo set up? i see 4 exhaust ports on each side. i believe the two semi-circles closer to us is where the second turbo goes.

    LOL that is what I get for cutting and pasting at 4 AM, I'll fix it in a bit.

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    let the modding begin..I wonder if a T88 would fit in there... Click here to enlarge

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    Click here to enlarge Originally Posted by BOLAS Click here to enlarge
    let the modding begin..I wonder if a T88 would fit in there... Click here to enlarge
    Or this: Click here to enlarge

    We will see some very cool things out of the N55 I am sure... large single turbo BMW.... oh man, good stuff.

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    So, it IS going to be a single turbo....
    This is my signature... Click here to enlarge

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    Click here to enlarge Originally Posted by BadBoostedBmwM3 Click here to enlarge
    So, it IS going to be a single turbo....
    Yes Click here to enlarge We wil see upgraded turbos much faster for this than the N54.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Yes Click here to enlarge We wil see upgraded turbos much faster for this than the N54.
    yes, we should...

    BTW, what SC kit do you have?? Also, just to get my facts straights, who all offers sc kits for the s65: ess, gintani, g-power, AA (soon to be), and....??
    Last edited by BadBoostedBmwM3; 01-28-2010 at 12:11 AM. Reason: typo
    This is my signature... Click here to enlarge

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Yes Click here to enlarge We wil see upgraded turbos much faster for this than the N54.
    dont speak to soon sticky, valvetronic, or some other ecu adjustment bmw makes may mean upped turbos are a hassle like the n54.
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    Click here to enlarge Originally Posted by oddjob2021 Click here to enlarge
    dont speak to soon sticky, valvetronic, or some other ecu adjustment bmw makes may mean upped turbos are a hassle like the n54.
    Yes, but hardware wise it will be more simple/efficient. Many things from figuring out how the DI injection and valvetronic react with upgraded turbos on the N54 will carry over. Should naturally result in a quicker aftermarket turn around since the wheel is not being reinvented.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Yes, but hardware wise it will be more simple/efficient. Many things from figuring out how the DI injection and valvetronic react with upgraded turbos on the N54 will carry over. Should naturally result in a quicker aftermarket turn around since the wheel is not being reinvented.
    good point about reinventing the wheel, but with bmw recognizing a tuning problem and warranty overuse and abuse, they may not make the same "mistake" again Click here to enlarge

    but both of us are speaking out of our asses, only time will tell.
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    Click here to enlarge Originally Posted by oddjob2021 Click here to enlarge

    but both of us are speaking out of our asses, only time will tell.
    Educated guesses Click here to enlarge

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    I know that having a single turbo already in place should make developement a little easier, but space in there still looks like a major issue!
    2010 LeMans Blue M Sport 335i: JB3 2.0, BMS DCI, BMS TT/BG, 19" VM V714, JB Kidneys, Painted Ref, Debadged, UR CL DP's, TEIN S-Tech Springs

    Old Ride: 2007 Montego 335i 6MT 12.34@111

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    We have a 2011 N55 on order. Can't wait to get started! Click here to enlarge

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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    We have a 2011 N55 on order. Can't wait to get started! Click here to enlarge
    In what car?

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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    We have a 2011 N55 on order. Can't wait to get started! Click here to enlarge
    Please not the 5GT!!!

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    Click here to enlarge Originally Posted by MSpiredM3 Click here to enlarge
    Please not the 5GT!!!
    I seriously doubt it...

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    335is?
    Click here to enlarge Originally Posted by tag824 Click here to enlarge
    guess i lost all my rep's... later bro's

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    I'll bet it has a lower redline or runs less boost at the same redline as ours. I talked to a turbo rebuilder around here and he said the twin scroll is nothing new and came out in the early 80s. I see this as a cost cutting measure for BMW. It may make the same torque but I'll bet it runs out of gas up top. It might be easier to swap a GT35R in there though... Click here to enlarge

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    Click here to enlarge Originally Posted by boom Click here to enlarge
    I'll bet it has a lower redline or runs less boost at the same redline as ours. I talked to a turbo rebuilder around here and he said the twin scroll is nothing new and came out in the early 80s. I see this as a cost cutting measure for BMW. It may make the same torque but I'll bet it runs out of gas up top. It might be easier to swap a GT35R in there though... Click here to enlarge
    or a GTX4202R Click here to enlarge

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    In what car?
    135i w/ DCT. Sick of you and Drew having all the fun!

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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    135i w/ DCT. Sick of you and Drew having all the fun!
    Nice!
    08 E92 M3 - DCT
    Bolt Ons - Best ET 11.88 Best Trap Speed 119.8 MPH
    60-130 MPH (3 shifts) 10.71s
    Gintani Stage 2+ Supercharger 60-130MPH (3 shifts) 7.06s
    11.45 @ 131.6 MPH
    579WHP @9.3psi

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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    135i w/ DCT. Sick of you and Drew having all the fun!
    Can't wait until you finally "get it" first hand Click here to enlarge I

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    Twin Scroll Single Turbo. Wonder if it will spool faster than the old Twin Turbo setup?

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    Click here to enlarge Originally Posted by st06m3 Click here to enlarge
    Twin Scroll Single Turbo. Wonder if it will spool faster than the old Twin Turbo setup?
    N55 is claimed to reach full boost .5 seconds faster than the N54: 2.25 seconds to 2.75 seconds.

    http://blogs.insideline.com/straight...55-engine.html

    -Rob

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