Car Modding, Motorsport, Formula 1

Early manufacturers of turbochargers referred to them as “turbosuperchargers”. A supercharger is an air compressor used for forced induction of an engine. Logically then, adding a turbine to turn the supercharger would yield a “turbosupercharger”. However, the term was soon shortened to “turbocharger”. This is now a source of confusion, as the term “turbosupercharged” is sometimes used to refer to an engine that uses both a crankshaft-driven supercharger and an exhaust-driven turbocharger.

Some companies such as Teledyne Continental Motors still use the term turbosupercharger in its original sense.

means putting the engine back to factory specifications. This generally involves new piston rings, bearings and gaskets. When done by a competent engine builder the engine will perform as new.

A top overhaul only covers the replacement of components inside the cylinder head without removing the engine from the vehicle, such as valve and rocker arm replacement. A full overhaul however covers the whole engine component replacement which requires the engine to be removed from the vehicle, such as replacing the connecting rods and crankshaft bearings. By comparison, a full overhaul service costs more than a top overhaul service.