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
Aston Martin V12 Zagato the Nürburgring 24-hour race. Aston Martin Chief Executive, Dr. Ulrich Bez lead the driver team joined by the company's Nürburgring Test Centre Director, Wolfgang Schuhbauer plus experienced amateur racer Peter Cate in the first of the two V12 Zagato's. The sister car was driven by One-77 Chief Engineer Chris Porritt, experienced sports car driver Oliver Mathai and automotive journalist Richard Meaden. Competing in the SP8 category, the V12 Zagatos; near production standard cars with only essential safety and aerodynamic modifications required for racing, took 2nd and 3rd place in class, equating to 15th and 39th overall in field of some