New Twin Turbo Straight six

[SAMFISHER]

New Skyline?... New Supra?...New Soarer?

Guess

Have a look at the link

http://www.autocar.co.uk/news_article.asp?na_id=214768

Here's the text

The BMW M3 looks headed for some stiff in-house rivalry in the form of a secret twin-turbocharged 3.0-litre six-cylinder version of the 3-series that’s little more than a year away from introduction. The new car, depicted here in computer-generated images based on recent scoop photographs, will be badged 335i according to Autocar sources.

The future 3-series range-topper will be ready for launch in left-hand-drive European markets by mid-2006, with right-hand-drive UK sales six months later. To be offered in coupé, saloon and estate guises, the 335i should bridge the gap that will be created in BMW’s range as the next M3 moves upmarket when it arrives in 2007 with 4.0-litre V8 power and a price to match.

The 3.0-litre straight six (right) is said to produce around 330bhp – up 72bhp on the new 330i and just 13bhp shy of today’s 3.2-litre M3. The new powerplant takes a leaf out of BMW’s latest diesel engine development by employing two turbochargers – one operating at lower engine speeds to boost low-end torque with the other called upon to extend power at the top end.

‘It’s going to take turbocharging to a whole new level,’ said a supplier privy to the new engine’s performance claims. Nothing’s official, but a 0-60mph time of around 6.0sec appears to be on the cards with top speed limited to 155mph. By coupling turbocharging with Vanos variable valve timing and Valvetronic, the new engine is said to be very economical and Euro4 emission compatible.

It’s possible that BMW is planning to provide the 335i with a new double-clutch gearbox similar to Volkswagen’s acclaimed DSG transmission. Tipped to replace the sequential manual unit used on the old 3-series, its development is cloaked in secrecy with a launch date still undetermined.

The new BMW won’t be the only model to carry the 335 name. Also under development is a new 3-series model fitted with the same twin turbocharged 3.0-litre in-line six-cylinder diesel that’s used in the 535d.

[jazza08]

mmm gotta love BMW.

Mind you Supras and rx7s use sequential twin turbo systems... so that bits nothing majorly new!

[pentae]

Jazza.. agreed, wow, how revolutionary. Watch all the BMW fans rave on about how ground breaking this is..

[Pva_Glue]

arent they makeing New SUPRA ATM???

[ferni]

I don't think they are saying sequential turboing is ground braking but more

"... By coupling turbocharging with Vanos variable valve timing and Valvetronic..." thats the BMW stuff that helps them make thier N/A engines so powerful, add that in with a turbo or two and its gotta be good!

Also the B4 was sequential turbod (new GT is single)

[SAMFISHER]

Yeah, nothing new in the design but it is interesting that one of the reasons given as to why the nissan and toyota straight six turbos were scrapped is because the couldn't be made to meet emission requirements. That was 2002 and this BMW is due 2006...

[ferni]

So the reason Japan stopped making the RB26 is because they couldn't make it meet emission requirements?

[funkymonkey]

yahuh... easier to develop the VQ rather than reinvent the wheel.

[Ronin 09]

Umm.... did none of you realise that this a diesel engine? Diesel engines have differing emission requirements to petrol engines.

BMW do not do turbo petrol engines, it is philosophically against the "M" car ethos.

And before you start flaming me, yes, I know that they did the 2002 turbo.

[ferni]

There you go, didn't know why they'd stopped with the RB26, but i guess it makes sense develop a new VQ engine

[R34GTX]

I don't think they are saying sequential turboing is ground braking but more  

"... By coupling turbocharging with Vanos variable valve timing and Valvetronic..." thats the BMW stuff that helps them make thier N/A engines so powerful, add that in with a turbo or two and its gotta be good!

Also the B4 was sequential turbod (new GT is single)

My friend just took delivery of his 2005 spec Liberty GT and it has 2 (two) turbo's.

Very very nice car to drive. Gave my stock R34 a run for it's money. (He also paid nearly twice as much lol)

FYI- Also has a kickin McCintosh 13 speaker stereo system.

[ferni]

R34GTX: Who told you its twin turbo? someones been pulling your leg

The B4 was twin(sequential) turbo.. but its replacement, the new GT is only single turbo...

http://subaru.com.au/explore/liberty/speci....asp?item=23472

They had trouble with the B4 having a flat spot inbetween switching to the 2nd turbo.

Very nice car tho, my mate has a B4, McCintosh stereo - very nice sounding for a stock stereo, nice car overall

[SAMFISHER]

Umm.... did none of you realise that this a diesel engine? Diesel engines have differing emission requirements to petrol engines.

Read it again Ronin, yeah they do a 3.0 turbo diesel but this new engine is PETROL

BMW do not do turbo petrol engines, it is philosophically against the "M" car ethos.

Its not for the M3 instead its for the top model of the regular 3 series range.

[Ronin 09]

umm rightio that's still a pretty big philosophical shift for BMW... yielding to MB's and Audi's supercharged / turbocharged cars I guess to keep up with the kilowatt count wars in Germany

[nmcmahon83]

GT is definately single turbo... perhaps he got confused between twin-turbo and twin-scroll turbo

I did the first time i heard about it.

[R34GTX]

nmcmahon83 and Ferni.

Yes you are both correct. I was caught up with reading two Subaru Car catalogues when his car arrived; comparing the old B4 to the new GT.

Serves me right for getting all excited over a new car. Happens to me everytime. :Oops:

Thank you for pointing this out to me guys.

[ferni]

np

yeah i heard about the twin scroll turbo as well, whats the deal with that