This is the second-generation B7 Turbo, introduced in April 1984. Once again, Alpina claimed the title of being the fastest 4-door car in the world.
The engine is based on BMW´s 3,5 litre unit, which in standard version produces 218 bhp. Alpina have made many changes to the engine such as a reprogrammed Motronic system, a modified cylinder-head, lighter mahle-pistons, a new camshaft, a special exhaust manifold and of course a KKK K27 turbocharger. The engine has higher compression than the old B7 Turbo so Alpina have decreased the turbo boost to 0,7 bar, because they didn´t want the B7 to have more than 300 bhp. That´s exactly what it has, 300 bhp and a torque of 501 Nm. The catalyst-version had 320 bhp and a torque of 509 Nm. The gearbox is a five-speed from Getrag.
The B7 Turbo has the excellent Alpina-Bilstein suspension with progressive springs and gas-pressure dampers. The brakes are more powerful thanks to Girling discs all-around, ventilated at front. The wheels are 16in high with 205/55 tires at front and 225/50 tires at rear.
The B7 has all the usual Alpina interior changes such as Recaro seats with Alpina upholstery, leather steering-wheel, gear knob, new instruments and so on. The visual changes include a deep front spoiler, rear spoiler and the wheels.
Depending on what year the car is manufactured Alpina have claimed different 0-100 km/h times. When Auto Motor und Sport tested the B7 Turbo Kat it accelerated from 0-100 km/h in 6,1 seconds, 0-160 km/h in 12,8 seconds and had a top speed of 265 km/h. But when the Swedish magazine Teknikens Värld tested the B7 Turbo it accelerated from 0-100 km/h in an amazing 4,8 seconds, 0-200 km/h in around 17 seconds and had a top speed of 270 km/h.
The production ended in July 1987 and a total of 236 cars were built. In August 1986 Alpina introduced the B7 Turbo Kat which went out of production in December 1987. Only 42 B7 with catalyst were made.