Alpina B10 Bi-Turbo

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Alpina B10 Bi-Turbo
Alpina B10 BiTurbo BASIS BMW 5er Gen3 E34 1989-1994 frontleft 2011-06-04 U.jpg
Overview
Manufacturer Alpina
Production19891994 (507 built)
AssemblyGermany: Buchloe
Body and chassis
Class Executive car (E)
Body style 4-door sedan
Layout Front-engine, rear-wheel-drive
Platform BMW E34
Powertrain
Engine 3.4 L twin-turbocharged BMW M30 I6
Transmission 5-speed Getrag 290 manual
Dimensions
Wheelbase 2,761 mm (108.7 in)
Length4,720 mm (185.8 in)
Width1,751 mm (68.9 in)
Height1,400 mm (55.1 in)
Curb weight 1,695 kg (3,737 lb)
Chronology
SuccessorAlpina B10 4.0 (E34)

The Alpina B10 Bi-Turbo is a high performance version of the BMW 5 Series E34 executive car manufactured by German automobile manufacturer Alpina. Beginning production in 1989, the B10 Bi-Turbo was based on the 535i and received several upgrades by Alpina, being the fastest production sedan in the world at the time of its introduction. Production ended in 1994 with 507 examples produced.

Contents

Developed at a cost of US$3.2 million, the B10 Bi-Turbo was introduced at the Geneva Motor Show in March 1989.

Specifications

To build each B10 Bi-Turbo powerplant, Alpina dismantled a BMW M30 engine, replaced the stock pistons with forged Mahle units, installed two Garrett T25 water-cooled turbochargers, and added a Bosch variable boost control with range of 0.40.8 bar, adjustable from the driver's seat. Additional modifications helped raise the horsepower of the standard M30 engine from 155 kW (211 PS; 208 hp) at 5,700 rpm and 305 N⋅m (225 lb⋅ft) at 3,000 rpm to 265 kW (360 PS; 355 hp) at 6,000 rpm and 520 N⋅m (384 lb⋅ft) at 4,000 rpm. A Getrag 290 5-speed manual transmission was specified to handle the power.

Modifications to the suspension included Alpina-specific springs and anti-roll bars. Bilstein shock absorbers were used at the front and automatic-load levelling units by Fichtel & Sachs were used at the rear. Front brake rotors were large 13.1 in (332.7 mm) discs from UK-based Lucas Girling, bigger even than the 12.1 in (307.3 mm) pieces found on the E34 M5. Michelin MXX tyres were standard as was BMW's Automatic Stability Control (ASC). [1]

Performance

Alpina claimed a 0–100 km/h (62 mph) acceleration time of 5.6 seconds and a top speed of over 290 km/h (180.2 mph), [2] putting it in the same league as a five years older car model Ferrari Testarossa in terms of performance. In the September 1991 issue of Road & Track, Paul Frère wrote: "For me this is the car … I think this is the best 4-door in the world." [3] Despite a base price tag of 146,800 DM, nearly twice the price of an E34 M5, the B10 Bi-Turbo became the best-selling single model in Alpina history up until that point. The six year production run began in 1989 and ended in August 1994. Production ended due to the discontinuation of the M30 engine by BMW in 1993. The final 50 M30 engine blocks were shipped to Alpina for use in the final 50 cars. [4]

Independent performance test results

Technical data

ModelAlpina B10 Bi-Turbo
Cylinder/Valves6/12
Bore × Stroke92,0 × 86,0 mm
Displacement3,430 cm³
Compression7.2:1
Max. Power265 kW [257 kW] (360 PS [350 PS]) at 6,000 rpm
Max. Torque520 Nm [501 Nm] at 4,000 rpm
Top Speed291 km/h (180 mph)
Acceleration 0–100 km/h5.6 seconds [5.9 seconds]
Acceleration 0–160 km/h12.3 seconds
Acceleration 0–200 km/h19.7 seconds
Acceleration 60–100 km/h in 4th gear7.1 seconds
Acceleration 80–120 km/h in 5th gear9.2 seconds
1000 m, Standing Start24.6 seconds
Fuel Consumption in l/100 km combined12.4 liters

[Figures in brackets refer to Swiss market vehicles]

Bibliography

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References

  1. Palevsky, Alexander. "Blown Away". Bimmer Magazine (October 2007): 61–64.
  2. Archived 29 October 2013 at the Wayback Machine Alpina company website
  3. Paul Frère, « Alpina B10 Biturbo », Road & Track , #3, March 1991 (B10 BiTurbo review).
  4. Palevsky, Alexander. "Blown Away". Bimmer Magazine (October 2007): 62.
  5. 1 2 3 Sport Auto 1/1990 4-11
  6. Auto, Motor und Sport 24/1989 12-18
  7. 1 2 3 4 Road & Track September 1991