User:Midget-1010/Porsche 678

Porsche 687
Porsche in the 1950s manufactured several variations of the 356 type motor that was in use at that time, one variation was the type 687/1/2/3/4 for Aero use, this type is covered further in the main text for Porsche PFM 3200. there is also a type 702/3, it is interesting to note that these type's where not well known in the US ="HORIZONTALLY-OPPOSED PISTON AERO ENGINES by JACK ERICKSON" 
 * 1) REDIRECT Porsche PFM 3200(01:17, 8 November 2010 (UTC))