335i o m3 o alpina b3s o 1m ???

Altre info per i più curiosi e diligenti traduttori /emoticons/wink@2x.png 2x" width="20" height="20" />

Alcune differenze tra Alpina e 335

Engine management Siemens MSD 81 allowing 1,2 bar (instead of MSD80)


Air flow intake different from BMW one (see "Alpina" logo on airbox), creating "vortex" effect (air acceleration)


Exhaust modified for less back pressure


Bigger oil cooler, placed on the left of the engine bay


Additional water cooler (inexistant on host BMW) placed on the right ( parzialmente vero)


New front spoiler directing air flow on these 2 radiators


Gearbox ZF 6HP19 TU modified (with different flywheel, specific management and extra planetary to allow quicker shifts), instead of 6HP19


Tyres 245 front /265 rear (instead of 225 /255)


Emission classification Euro 5 (Euro 4) .

 


Engine bloc, crank and pistons: unchanged from B3


Gearbox ratios : unchanged from B3

 

Si riferisce alla precedente versione, quella da 360 cv.

First of all, driving with an open top (a first time ever in my life, even as passenger !) is much more fun than with a coupé. Your hear the engine and exhaust sound with much more presence, your feelings feel decupled, and bottom line, you drive slower as you don't need to go that fast to have your dose of "good vibrations" ! (well , I say "not that fast", but this rocket managed unnoticed some 180 km/h in a blip, between two bends ! ).

 


After my deceptive test of the B3 biturbo, I was anxious about 2 things: the engine character, and the traction control. I said already that the engine is a great success. So is it for the traction control. I wrote that the B3's DSC was "blipping" like mad under hard acceleration. Here, I did not even notice one instance of DSC flickering. Maybe it was the weight of the convertible (+ 190 kgs) , but I cannot imagine that they did not modify something in the ECU. I almost regretted to have choosen for the expensive LSD on mine ! .

 


Other points of attention for me were: the suspension , and the gearbox changes. Here again, it's a 5 stars result.

 


Suspensions are like Alpina suspensions always should be . Soft at low speeds, stiffer at high speeds. Not dead stiff and ready for a track day, as Alpina customers do not expect it. Just the right, ideal balance. It is more comfortable that my previous B3S E46. I would say, It's like a B10 BT at low speeds, and a bit stiffer at high speeds (I find my B10BT just a bit too soft in fast curves, despite the new dampers).

 


The gearbox changes are now, really instantaneous in sport mode. You have actually 3 modes: Drive, for cruising, Sport, for automatic changes but faster and higher, and Manual, if in Sport you decide to change yourself, either through the gear stick or the steering wheel buttons.

 


The sound is a bit more present at idle, than on the B3 biturbo. It remains very (too) quiet when driving normally and with the top closed. However, it's perfect with the top open, and it becomes really thrilling when opening up the throttle ! It's like a big V8, very addictive !

 


From the cockpit side, nothing changed, except that a dotted red line starts now around 6750 rpm, until 7000 rpm where the plain red line still starts (compared to B3 biturbo).

 


Another detail: although it was 25 °C, the oil temp never reached 120*C. With a similar test and less warm weather in 2007, the B3 biturbo oil temp was steadily a bit over 120 °C . Probably the result of the increased oil cooler and additional water cooler.

 

 

 

Il radiatorino supplementare dell'acqua, posizionato dal lato guida. Questi sono inglesi... guidano dalla parte sbagliata :) /emoticons/smile@2x.png 2x" width="20" height="20" />

 

A questo punto, penso di sì. Ancor meglio aspettiamo qualche altra settimana poi verificheremo personalmente!

 

 


Purtroppo non conosco ancora bene la storia di questi modelli! Non saprei dirti!! E' interessante la parte in cui spiega come si comportano le sospensioni!

 

Ora un breve filmato: spiega come dovrebbe essere (scusate se pronuncio questa parola) una macchina a nafta:wink:

http://fwd.channel5.com/fifth-gear/videos/shoot-outs/shoot-out-bmw-320d-vs-alpina-d3