BMW 335i/335Ci

[1996E36328i]

BMW twin-turbo straight-6BMW is officially unveiling the long-rumoured 3.0-litre twin-turbo straight-6 ! This engine will be first used in the 3-series sedan and new 3-series coupe, dubbed 335i and 335Ci respectively to reflect their performance level instead of engine capacity. This is BMW's first turbocharged petrol engine since the 745i turbo of 1980. In the past quarter century, BMW insisted naturally aspiration was the only way to deliver the instant throttle response it required. As turbo technology improves, while its 3.0 straight-6 started losing performance edge over its larger capacity rivals, BMW is lured back to the turbocharged camp.Codenamed N54, the new engine is based on the current R6 3.0 straight-6. However, it has the magnesium-aluminum block replaced with conventional aluminum alloy to handle higher thermal stress. The Valvetronic and Double-Vanos are retained. Direct injection is added to the straight-6 for the first time (previously only featured in the V12 of 760Li). This help cooling the combustion chambers and is especially suitable for a turbocharged engine.To eliminate turbo lag - a deadly sin to BMW, it employs two very small turbochargers, each fed by 3 consecutive cylinders, to boost a relatively low pressure. The result is a modest power gain - 306 horsepower (DIN) compare to the 258 hp standard engine and 265hp engine used in 130i and Z4. However, as all other LPT (low pressure turbocharged) engines, the emphasis here is torque: increased from 221 / 232 lbft to 295 lbft, and this is available from 1500 rpm to 5800 rpm. Best of all, the 7000 rpm redline is unaltered by the turbo conversion.According to BMW's own testing, the 335i sedan can sprint from rest to 60 mph in 5.4 seconds, an improvement of half a second from 330i. While its max power matches the current (engine) class leader Lexus IS350, its widely accessible torque should put it in the lead. For comparison, the Toyota engine produces 277 lbft at 4800 rpm. I also expect the BMW engine to return lower fuel consumption. The new engine bridges the wide gap between the 258hp 330i and the forthcoming 400hp M3.

 

[ace99]

stim.. BMW is in preparation for a V8 M3..

 

[supergripen]

BMW Nirvana!!!! my prayers have been answered!!! :yahoo:

 

[E46Fanatic]

Might see more of these instead of the V8 M3 here due to smaller engine/road tax... The first Valvetronic Turbo!

Sure got lots avenues to tweak the boost I think...and may be the boy racer's choice over the M3 due to this potential. I wonder how much it would cost here.

 

[fabianyee]

only 40hp hike??? shud use cast iron block to handle higher boost... and do it like the 535d sequential turbo system. that shud provide higher output at the higher rev range.

 

[buddy]

Dear Santa...i know it's a bit too early to ask but can i have one for christmas???I'll be a good boy for the rest of the year.

And also world peace

Yours truly.

 

[E46Fanatic]

Originally posted by fabianyee@Feb 24 2006, 01:36 AM
only 40hp hike??? shud use cast iron block to handle higher boost... and do it like the 535d sequential turbo system. that shud provide higher output at the higher rev range.

LPT only mar... HPT will typically see lower compression ratio which will impact throttle response as well before the wastegate opens up ..

 

[GREEN KILLER]

good news for turbo lovers....ppssttt

 

[GREEN KILLER]

Good news for turbo lovers....ppssttt,

but from rest to 60 mph in 5.4 secs is not that fast.

 

[supergripen]

Originally posted by fabianyee@Feb 24 2006, 02:36 PM
only 40hp hike??? shud use cast iron block to handle higher boost... and do it like the 535d sequential turbo system. that shud provide higher output at the higher rev range.

yeah..that's what i thought they would do too.well,they must have a reason for it.maybe better throttle response is top priority..

well,5.4s is not fast by turbo standards but it'll do just fine for me.a lil bit of tweaking will see to that..i guess wht's more important is real world figures like 50-70 and what not.

this could very much quell my longing for jap turbos..

 

[DingChavez]

Originally posted by GREEN KILLER@Feb 24 2006, 05:20 PM
Good news for turbo lovers....ppssttt,

but from rest to 60 mph in 5.4 secs is not that fast.

not fast??? bro, you compare with what? with evo and sti of courselah... with porche and ferrari of courselah... with 80% of the cars on Malaysian road? Thats fast dude

 

[bmwsideways]

Originally posted by supergripen+Feb 25 2006, 09:50 AM-->QUOTE (supergripen @ Feb 25 2006, 09:50 AM)

 

[f8.]

Originally posted by E46Fanatic+Feb 24 2006, 03:05 PM-->QUOTE (E46Fanatic @ Feb 24 2006, 03:05 PM)

 

[k3nny]

The fact that BMW is now producing a turbo engine will make it more friendly to people seeking higher power figures that can only be achieved with forced induction.. :nyehehe:

Of course without the added complication of previously force inducting modern BMW's.

 

[supergripen]

turbo...me like!!!! the fuel price hike may throw a spanner into the whole bmw turbo excitement thing but i don't care..
the glory days will finally be back.. :yes!: