BMW Unveils new Bi-Turbo V8 Engine: N64

overst33r

Diamond Member
Oct 3, 2004
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I wonder why they decided to go with top mounted turbos... Seems like other factors (heat dissipation, packaging, etc) discourage it... Oh, maybe it's because they want to make it easier on the mechanics that will be replacing them... ;)
 

swtethan

Diamond Member
Aug 5, 2005
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Originally posted by: mariok2006
I wonder why they decided to go with top mounted turbos... Seems like other factors (heat dissipation, packaging, etc) discourage it... Oh, maybe it's because they want to make it easier on the mechanics that will be replacing them... ;)

HMMM!!!! 2x turbos..... $6k???? + BMW prices
 

ayabe

Diamond Member
Aug 10, 2005
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Originally posted by: swtethan
Originally posted by: andylawcc
Originally posted by: mb
I think I'd be almost as excited as this kid driving a bimmer with that engine!

lmao! I seriously did!

I'd be like..... N64!!!!!! AHHHHHHHHHHHHHHHHHH *makes blowoff valve sound* WOOOOOSHHHHHH

I believe BMW and most OEM turbo auto manufacturers have recirculating BPV's. In other words its doesn't vent to the atmosphere and thus is very subtle. Also, doesn't cause the ECU to have a conniption when you shift.

Externally venting blow off valves are for idiot newbs unless you are talking full blown race turbos.

 

Fenixgoon

Lifer
Jun 30, 2003
32,426
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Originally posted by: ayabe
Originally posted by: swtethan
Originally posted by: andylawcc
Originally posted by: mb
I think I'd be almost as excited as this kid driving a bimmer with that engine!

lmao! I seriously did!

I'd be like..... N64!!!!!! AHHHHHHHHHHHHHHHHHH *makes blowoff valve sound* WOOOOOSHHHHHH

I believe BMW and most OEM turbo auto manufacturers have recirculating BPV's. In other words its doesn't vent to the atmosphere and thus is very subtle. Also, doesn't cause the ECU to have a conniption when you shift.

Externally venting blow off valves are for idiot newbs unless you are talking full blown race turbos.

i know VAG recirculates the unused air from the turbo with a diverter valve, in which case a blow off valve is actually detrimental because the ECU is expecting excess air to be recirculated, but there is none.

not sure if that's true for other MFR's though
 

zerocool84

Lifer
Nov 11, 2004
36,041
472
126
Originally posted by: Fenixgoon
Originally posted by: ayabe
Originally posted by: swtethan
Originally posted by: andylawcc
Originally posted by: mb
I think I'd be almost as excited as this kid driving a bimmer with that engine!

lmao! I seriously did!

I'd be like..... N64!!!!!! AHHHHHHHHHHHHHHHHHH *makes blowoff valve sound* WOOOOOSHHHHHH

I believe BMW and most OEM turbo auto manufacturers have recirculating BPV's. In other words its doesn't vent to the atmosphere and thus is very subtle. Also, doesn't cause the ECU to have a conniption when you shift.

Externally venting blow off valves are for idiot newbs unless you are talking full blown race turbos.

i know VAG recirculates the unused air from the turbo with a diverter valve, in which case a blow off valve is actually detrimental because the ECU is expecting excess air to be recirculated, but there is none.

not sure if that's true for other MFR's though

Yep like the last gen evo had that problem.

My car doesnt have a MAF so I can use an external BOV but it's just an expensive rice add-on.
 

thomsbrain

Lifer
Dec 4, 2001
18,148
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Sounds like they'll finally have an answer to the universe-bending Mercedes-Benz engines. The M5's V10 is amazing, but not really in a competing class with the boosted Mercedes torque-monsters.
 

rh71

No Lifer
Aug 28, 2001
52,844
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They also announced the US availability of the X5 3.0sd and 335d twin turbo diesels today (for probably November). Disappointing though - the 3.0sd that gets sent abroad has more power but they had to gimp it to meet emissions here in all 50 states. The torque is remarkable though.

I'm still waiting for them to announce the twin turbo petrol for the X5. :(

Here's a partial summary translated from German.
Debut of AdvancedDiesel with BluePerformance tech.

X5 3.0sd and 335d
265hp SAE 425lb-Ft I6 VVT diesel engine with SCR tech (50 US states compliance).

335d 0-62mph in 6.2 sec,
X5 3.0sd 0-62mph in 7.2sec.

BMW X5 xDrive35d AND BMW 335d TO MAKE US DEBUT
BMW Advanced Diesel with BluePerformance.
Performance + Outstanding Efficiency

Woodcliff Lake, NJ ? January 2, 2008? Entering a new era in the company?s mission to deliver ultimate driving machines that combine superior performance with exemplary fuel economy, the BMW Group will debut two vehicle models equipped with the BMW Advanced Diesel with BluePerformance at the 2008 North American International Auto Show (NAIAS) in Detroit ? the X5 xDrive35d and the 335d.
Successfully meeting the strict exhaust emissions requirements of the North American automobile market, BMW Advanced Diesel ? slated to hit US roadways in late 2008 ? will be available in all 50 states. The wide availability of these vehicles marks a significant milestone in the BMW EfficientDynamics strategy, which seeks to offer customers in automobile markets around the world maximum driving pleasure with minimum fuel consumption and emissions.
BMW Advanced Diesel technology is being introduced into the US market in the form of the 3.0-liter inline-six featuring Variable Twin Turbo Technology ? an engine widely acknowledged as the unchallenged benchmark for sporting performance, motoring refinement and superior efficiency in other markets around the world. At the 2008 NAIAS, BMW is presenting this 265-hp high-performance diesel engine in both the BMW X5 xDrive35d and the BMW 335d. To ensure full compliance with the demanding emission standards in California and other US states, BMW uses SCR technology to reduce nitric oxides (NOX), enabling nationwide introduction of BMW Advanced Diesel with BluePerformance as a 50-state model (BIN5).

New generation of diesel technology:
Maximum dynamism, minimum emissions.
Maximum power, supreme efficiency: The first BMW Advanced Diesel with BluePerformance is particularly well-suited to combine the driving dynamics and motoring refinement of a premium automobile with the most current and demanding standards for preserving resources and reducing emissions. Featuring exceptional power and torque, the 3.0 liter inline-six diesel is one of the most fuel-efficient and economical engines in its class.
Applying Variable Twin Turbo Technology, a small turbocharger first cuts in at low engine speeds. Thanks to its low inertia, this turbocharger develops boost (and extra power) in response to even the smallest movement to the gas pedal and without the slightest delay. As engine speed increases, the second, larger turbocharger cuts in, developing maximum torque of 425 lb-ft at just 1,750 rpm. Interaction of the two turbochargers is controlled by the particularly efficient, high-performance electronic engine control unit.
In addition to the above Variable Twin Turbo Technology, new technical highlights of BMW Advanced Diesel ? presented for the first time in 2007 ? include an aluminum crankcase and third-generation common-rail direct fuel injection. Featuring precision-quality precise piezo-injectors to deliver the precise dosage of fuel into the combustion chambers with the smallest volume of pre-injection, the third generation system ensures a particularly clean injection process with optimized fuel consumption, emissions figures and running smoothness.
Given all of these qualities, BMW?s 3.0-liter diesel with Variable Twin Turbo has won the prestigious International Engine of the Year Award multiple times ? more than any other prize or acknowledgement. The engine is featured in a large number of models in Europe and is now expanding its global story of success as the BMW Advanced Diesel with BluePerformance.
At the 2008 NAIAS, the BMW 335d featuring Advanced Diesel with BluePerformance for maximum output of 265 hp and peak torque of 425 lb-ft. will provide a clear and convincing demonstration of these qualities. On the road, this means acceleration from 0?62 mph in 6.2 seconds and average fuel economy of 23/33 mpg (city/highway, provisional data).
The BMW X5 xDrive35d, will also debut in Detroit. Like the 335d, the X5 xDrive35d offers sporting character through BMW Advanced Diesel with BluePerformance, while standing out as a high-torque Sports Activity Vehicle with excellent qualities for long-distance motoring. The BMW X5 xDrive35d accelerates from 0?62 mph in just 7.2 seconds and offers average fuel economy of at least 19/25 mpg (city/highway, provisional data).
 

Fenixgoon

Lifer
Jun 30, 2003
32,426
11,457
136
^ turbo diesels = win

now VAG needs to bring their TDI over (in more cars than just the touraeg and jetta)
 

rh71

No Lifer
Aug 28, 2001
52,844
1,049
126
Originally posted by: Fenixgoon
^ turbo diesels = win
Keep in mind though, this 3.0sd TT diesel is only 0.6sec faster than a 3.0si non turbo petrol in a 0-60mph race. It's mostly the torque but it almost evens out in the end. It does save 4mpg while doing it though.
 

overst33r

Diamond Member
Oct 3, 2004
5,761
12
81
Originally posted by: rh71
Originally posted by: Fenixgoon
^ turbo diesels = win
Keep in mind though, this 3.0sd TT diesel is only 0.6sec faster than a 3.0si non turbo petrol in a 0-60mph race. It's mostly the torque but it almost evens out in the end. It does save 4mpg while doing it though.

The torque doesn't really have much to do with a standing start... If you look at the numbers, you can substitute any reasonable lower number for the torque and still get about the same time. A 335i does 0-60 in 5.3 according to BMW. The extra 40hp+ is what is causing the .9s dip. The mpg isn't really that great either... 30mpg is easily possible with the 335i.