AUTO MODIFIED 2011

Heart of the BMW Alpina B5 - based on the 5 Series, like the M5 - is BMW's 4.4 liter V-8. BMW's M Division does without turbos and superchargers. Not Alpina; they have adopted a centrifugal compressor, engine driven, to boost power throughout the speed range and produce the same power ouput as the BMW V-10.
Bu the system has a neat twist. At idling and when driving at low speed, the compressor does not operate, so gas mileage is quite good. A throttle plate upstream of the supercharger cuts it in and out according to load.

In choosing a Cosworth- Ford engine Brooke has gone for quality and ease of obtaining parts needed for servicing. Cosworth provides a range of tuned Ford engines, modified to give the necessary durability for the power output, and as they are four-cylinder in-line units they are compact.

The base model comes with 190 bhp, then you can go to 260 bhp at 7,500 rpm with 200 lb ft (271 lb ft) torque at 6,100 rpm, or you can go for all-out power with the 300 bhp unit.

Suspension and steering are on classic lines, with double wishbones front and rear, of airfoil section because they need to slip through the air, with aluminum alloy suspension uprights. Coil springs and adjustable dampers are fitted front and rear.
Mighty powerful 2011 The Alpina BMW B5 Bi-Turbo