How To Rebuild Your Volkswagen Air Cooled Engine Manual By HP Books. This Shop Manual Will Help Guide You Troubleshoot , Remove, Tear Down, Inspect, Assemble & Install Your Vw Engine. Includes Vw Bug, Bus, Karmann Ghia, Thing, Type 3, Type 4 & Porsche 914 Engines. Includes Parts Interchange, All Models 1961 And Up.