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
V12 engine Mercedes-Benz to follow suit in 1991. While BMW sells far fewer V12-engined 7 Series vehicles than V8 versions, the V12 is marketed in the U.S., China , and Russia. The BMW-designed V12 is used in Rolls-Royce cars, while the Mercedes engine was installed in Maybach cars. Mercedes S65 AMG, CL65 AMG, and SL65 AMG are powered by a V12 Bi Turbo engine making and at 2,300-4,300 rpm. The CL65 AMG has a significant higher cost, but the V12 engine makes them a status symbol. The V12 engine is generally smoother than the other 12-cylinder configuration, the W12, although the W12