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      03-23-2011, 11:54 PM   #221
simianspeedster
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Quote:
Originally Posted by Ncastellano22 View Post
New 328i + 500 bucks = current stock 335i.
I know you're mostly referring to the numbers and not the experience, but a heavily overboosted, relatively small displacement 4 will never feel or perform like a mildly boosted inline 6 across the rev range. It will likely have significantly more lag, be more "peaky" in its power curve, deliver more NVH (of course) and I would be concerned about reliability/longevity if none of the other components are modified to account for the additional power.

No question a chipped 2.0T will be a cheap performance bargain, but a 2.0T +$500 bucks will definitely not equate to a stock 335i.
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      03-28-2011, 10:25 AM   #222
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Originally Posted by AW128i View Post
Not sure if it's lighter than the N52, but according to a BMW Group press release, it's "...lighter and more compact than a six-cylinder engine of equivalent power." Now, not really sure what they're comparing it to since BMW doesn't have any 240 hp/258 lb-ft 6-cylinders??

...[/url]
actually they do; look no further than the non-detuned n52s such as in the 330 in the u.s and the 130 overseas; these had in fact more hp(255-270 or so), with albeit less torque, but overall close enough to warrant the comparison.
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      04-15-2011, 09:29 AM   #223
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Quote:
Originally Posted by simianspeedster View Post
I know you're mostly referring to the numbers and not the experience, but a heavily overboosted, relatively small displacement 4 will never feel or perform like a mildly boosted inline 6 across the rev range. It will likely have significantly more lag, be more "peaky" in its power curve, deliver more NVH (of course) and I would be concerned about reliability/longevity if none of the other components are modified to account for the additional power.

No question a chipped 2.0T will be a cheap performance bargain, but a 2.0T +$500 bucks will definitely not equate to a stock 335i.
I would bet there isn't a whole lot of room on the table for performance with this engine. The gains would probably come from reducing back-pressure, improved intercooling, and possibly a less restrictive intake and a tune to accomidate these improvements. I'm 90% sure you wouldnt see the same percentage level of improvement as the N54 per mod.
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      04-29-2011, 03:37 PM   #224
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This engine will most likely be in the F30 328 right?
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      04-29-2011, 04:05 PM   #225
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Originally Posted by DTM-R13 View Post
This engine will most likely be in the F30 328 right?
There's of course no official word yet, but I would think so. Turbo 4 for the 328 and turbo 6 for the 335 sounds like a reasonable guess.


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      11-27-2011, 12:52 AM   #226
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Originally Posted by yooooooo View Post
2.0L turbo 245hp ?
Didn't Honda 10 years ago produce a 2.0L N/A 240hp engine for the S2000

Am I missing something here? is Honda ahead of its time, or is BMW lagging behind.
And Honda achieved these horsepower levels without a turbo.
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      11-27-2011, 09:21 AM   #227
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Originally Posted by E92Vancouver View Post
And Honda achieved these horsepower levels without a turbo.
It sure did, and it also had at least 100 lb-ft less torque than the N20. And, what little torque it did have, wasn't available until at least 6,800 RPM on the later models and not until 7,500 RPM on the original one with the 2.0l motor. High, low-RPM torque is everyday-usable and enjoyable to drive with. Low, high-RPM torque is only good for the racetrack where sustained high-RPM runs are the norm.
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      11-28-2011, 12:19 AM   #228
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My 2007 Pontiac Solstice GXP had 260 hp from a 2.0L turbocharged/twin-scroll 4 with direct injection, and all the power was low in the band with 260 torque and a 0-60 time of 5.5 seconds.

Sadly, since then they've canceled every iteration of the Kappa product, though not because of any fault with the engine. (People stopped buying Suburbans and Silverados for a while. Oh well.)

BMW is not really "out in front" of the high-tech 4-cylinder wave, at least not to the extent that they are with dual-clutch transmissions and some other technologies. But I wouldn't say that they're behind either.
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      12-01-2011, 07:44 PM   #229
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Here's another significant comparison: The new Z4 SDrive28i (with that 4-cyl, 240hp engine) gets 34 mpg on the highway. The similarly-marketed and popular Mazda Miata is over 800 pounds lighter and has 73 fewer horsepower... yet it gets only 28 mpg on the highway.

Turbo+DI 4-cylers are becoming a tremendous competitive advantage. And their horsepower will only increase. There's really no reason why the TwinPower 4 can't produce *300 hp* with a 3rd-party tune (I had options up to 315hp for my GXP), which means makers have plenty of room to ramp those numbers up over time (while preserving gas mileage).

I know nobody's going to agree with me, but I predict the TwinPower 4 series is going to replace the N55 within a few years. Watch.

(source for stats above: http://www.foxnews.com/leisure/2011/...-z4-sdrive28i/)
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      12-02-2011, 07:10 AM   #230
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Quote:
Originally Posted by Pangloss View Post
I know nobody's going to agree with me, but I predict the TwinPower 4 series is going to replace the N55 within a few years. Watch.
Possible in a decade or so. At leats from a power output point of view. Especially when everything is hybrid-ized which should add another 20% to 80% increase in power depending on the hybrid system employed.

Even if this happens, though, the turbo 6 won't go away - it will simply move up a slot and replace the V8. Though the V8 may still remain for higher end vehicles and SAVs.
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