Turbo BMW

Dolby

Dolby

Honorary Master
Joined
Jan 31, 2005
Messages
39,162
Reaction score
6,146
So I haven't been following BMW news that much - but notice they have two variants of turbo charged 2.0 engines (135kw and 180kw)) as well as their turbo charged 3.0 (225kw) - all in the Z4.

The more powerful two can sprint to 100km/h in under 6 seconds - which is quite impressive, I think! Even the small 135kw has a claimed 6.9 seconds ...

Maybe they'll start slowly but surely replace the smaller, naturally aspirated engines that battle up at the highveld with slightly more power - and maybe the next 320i will no longer be the tank it is now :P
 
Isn't the 320i being replaced by the turbo motor early in the new year? Nice power figures. I wouldn't mind having 180kW on tap at the reef while still having something resembling acceptable mileage.
 
The trend is towards smaller force-inducted engines as they are a lot more efficient at part throttle than big displacement NA motors while still giving the oomph when needed. I <3 my 2l turbo.
 
Let's just hope their new N20 Turbo 4-cylinder engines don't suffer the same issues as the N54 (3.0 6-cyl twin turbo as used in 2010 and older 135i, 335i, etc.).

The N54 has had numerous issues world-wide with the high pressure fuel pumps (I'm onto my fourth) and they've now, finally, under much duress, recalled them all for fitment of 3rd-generation HPFPs. A number of people also had injector failures, closely related to the HPFP failure and aggravated by extreme sensitivity to contaminated fuel (which is quite common in SA). Initial indications are that the N55 (3.0 6-cyl twin-scroll single-turbo as used in 2011 135i, 335i, 535i, etc) have not been immune to HPFP failure either, despite being factory-fitted with the latest generation HPFP.

Potential fuel pump issues aside, the new N20 has some seriously impressive figures, particularly in 180kw form, both in terms of performance and economy. On paper it seriously raises the bar.

But then, so did the N54 when it was launched. As far as I recall, it won three international engine-of-the-year awards and, as a driver of an N54-engined car, I have to say that - when it's 100% - it's a truly wonderful piece of engineering.

But in terms of reliability, issues, turbo lag (BMW screw with the DME programming after you take it in for the recall work and plumbing on most turbo cars develops leaks over time), I honestly cannot say that the N54 is NOT comparable to what was probably the pinnacle of engine design at the time - the N52 (straight six, naturally aspirated, 2.5 and 3.0 variants, with Double VANOS and Valvetronic). The N52 was good for 250,000+ pain-free kms. By comparison, virtually every N54 has - by the time of its first service - had a fuel pump replacement, whether due to failure or recall.
 
Mmm. High pressure fuel pumps. Bane of direct-injection petrol engines it seems! Vw have big kak with the hpfp in the EA811 motors as well. Quite a daft design- driven by a lobe on the intake camshaft with just a bucket follower between the cam and the pump plunger. The EA888 seems a lot more robust- it has a roller follower at least and seems to be able to maintain 150bar rail pressure without problems.
 
I have no idea what you guys are saying - but I'll Google ;)

I was just impressed that they're making other turbo engines besides the 3.0 unit. They own the 1.6 turbo from the mini too - which means they could have a 1.6, 2.0 and 3.0 turbo churning out anything from 125kw to 225kw.

They could also make an entire range of turbos - and living at the reef, that'd be awesome
 
Doesn't the new one series already have these new turbo (twin?) engines? The 116, 118, 116d and 120d.

edit:
With every new generation of engines the BMW engineers set new benchmarks to increase dynamics and efficiency. And this is also true of the petrol engines in the BMW 1 Series. The newly developed BMW TwinPower Turbo 1.6-litre petrol engine used for the first time in the BMW 116i and 118i gets down to work particularly efficiently. This new drive unit with BMW TwinPower Turbo technology combines a TwinScroll turbocharger with Valvetronic, twin Vanos and High Precision Injection. The intelligent technology package produces impressive performance values and a high torque while substantially reducing fuel consumption. As a result, the BMW 118i with 125 kW (170 hp) accelerates from 0 to 100 km/h in 7.4 s with an average fuel consumption of 5.6 to 5.9 l/100km and CO2 emissions of 131 to 137 g/km. The BMW 116i, however, with 100 kW (136 hp) even manages with only 5.5 to 5.8 l per 100 kilometres and achieves CO2 figures of 129 to 134 grams per kilometre (figures in accordance with EU test cycle, dependent upon the selected tyre format).
Click to expand...
http://www.bmw.com/com/en/newvehicles/1series/5door/2011/showroom/dynamics/petrol_engines.html#t=l
 
Last edited:
Wow - I didn't know.

No longer will I s****** at how slow the smaller BMWs actually are :/
 
Well 100kw from a 1.6T isn't exactly amazing... I mean my NA 1.6 is 93kw.
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X