A couple of good engine turning images I identified:
Porsche 935 twin turbo
Image by wbaiv
DSC_0069
917K port side, forward engine compartment
Image by wbaiv
7a2_DSC_0438
GE J-31 Turbojet Engine
Image by cclark395
Common Electric J-31 Turbojet engine
Planes of Fame Airshow 2012
May five, 2012
"1942 Turning The Tide"