#1...VW Beetle/Porsche/Subaru flat boxer engine
#2...Mazda "Wankle" rotary engine, made famous in the RX-7. What a fun engine to drive...silky smooth and high revving
#5...Radial engine such as common in some WWI and WWII era planes
Looking around the 'web for a few minutes..can't find a good one of a Harley Twin Cam 88!![]()
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