Engine - Exhaust
The life-giving organ is the upgraded version of the 4941 cc eight cylinder, four-valve engine from the M5. In conjunction with our technology partner, Schnitzer the engineers have equipped the TOPSTER with special intake and exhaust camshafts. The cylinder heads have also been fine-machined, the compression raised to 11.5 : 1 and the control unit is reprogrammed.
To improve the exhaust gas flow, a high performance exhaust system has been developed. The power plant has had to be re-positioned and the entire oil circuit had to be optimised, so it was necessary to modify the oil sump and oil pump. Finally, the air flow was improved. By means of new intake pipes and 2 air filter boxes, the entire intake tract could be optimised.
These modifications have together resulted in the following performance figures: Power: 331 kW / 450 HP, Max. torque: 520 Nm, 0 - 100 km/h: 4.5 seconds, Top speed: 305 km/h. Furthermore the rear axle (ratio of 3.62:1) has a variable differential lock from 0-100 % depending on the load of the V8 TOPSTER.
Brakes
Perfect retardation is provided by the brake kit. This uses brake disks of Ø 365x32 mm at the front and Ø 328x20 mm at the rear in conjunction with special brake calipers. Even after several "hard brakings", the system achieves deceleration values of 1 g and more.