First conceived in 1961 for the T7 prototype by Audi a4 pictures

We weren't so confident on the order of this diesel locomotive's qualifications for WEOTD repute, not because it doesn't size up in the awesomeness specialty but because it's damn near impossible to illustration out whether those pedant Porsche engineers obligate completely perplexed-slip-of-paper redesigned the article repetitively (keeping only the general design, swelling hardware, and the bore centers). If we be in agreement that the pugilist six-banger from Stuttgart has been more or less the even tank locomotive with a constant string of upgrades, then its origin stretches all the way vertebral to the first 1960s. We'll let tipster Jason evaluate in with his arguments after the jump...Says Jason: First conceived in 1961 for the T7 exemplar, and later installed in a 911 in 1964, the little 2.0L flat six turned out a whooping 130 hp. Fast forthright to 1998, and the last air-cooled 911 (turbo) was cranking out 400 hp. The race flat-6 motors in the 935 were cranking out in excess of 950hp with water-cooled heads. But this motor-powered didn't just power 911s, it covers 914s, 959s, and a swing of race cars... including the 934, 935, 956, 962, and Porsche's first Indy car in the 1970s, along with the 936... Not only was this gas-powered in a side road car for 34 years, it has won races and championships for Porsche for nearly as long... including 24hrs of LeMans, 24hrs of Daytona, 12hrs of Sebring, Targa Florio, MonteCarlo, and Paris-Dakar (Twice). Does it need mentioning that the 956 with a flat-6 "