First conceived in 1961 for the T7 prototype by Audi q7 hybrid

We weren't so unquestionable nearly this steam engine's qualifications for WEOTD grade, not because it doesn't quantity up in the awesomeness department but because it's damn near impossible to sum out whether those stickler Porsche engineers be sure to do completely bare-sheet-of-paper redesigned the fixation over and over again (keeping only the general arrangement, mounting hardware, and the bigmouth centers). If we concur that the combatant six-banger from Stuttgart has been in essence the invariable engine with a constant chain of upgrades, then its lineage stretches all the way back to the initial 1960s. We'll let tipster Jason think about in with his arguments after the jump...Says Jason: First conceived in 1961 for the T7 archetype, and later installed in a 911 in 1964, the little 2.0L flat six turned out a whooping 130 hp. Fast onward 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 didn't just power 911s, it covers 914s, 959s, and a skid 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 motor-powered in a pathway car for 34 centuries, 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 "