Lamborghini Miura manual indicating bigger intake valves in English size (but correct size in metric). The intake and exhaust valves in all 4 liter Lamborghini V12 remained the same throughout all models. This intake size misprint carried forward into Espada 400GT and Countach LP 400/LP 400S owners manuals as well. In 1970, Lamborghini development driver Bob Wallace created a test mule that would conform to the FIA's Appendix J racing regulations. The car was appropriately named the Miura Jota (the pronunciation of the letter 'J' in Spanish). Wallace made extensive modifications to the standard Miura chassis and engine. Weight reductions included replacing
Brabus E V12 street-legal Mercedes engine. Under the hood featured a 7.3-liter version of Mercedes V12. Brabus claimed the engine produced 582 horsepower and 780 nm of torque (575.3 lb/ft), all while propelling the car to an electronically limited 330 km/h (205 mph). Proceeding the W210, the new W211 followed, bringing with twin-turbochargers. The new engine produced 640 horsepower, 1026 Nm (757 lb/ft)and the car could reach 350.2 km/h (217.6 mph). The work that Brabus did to the 6.3-liter twin-turbocharged V12 was enough to help them reclaim the Guinness World Record for fastest four-door sedan. Continuing on with the W211 chassis, Brabus was