Fuel injection Throttle body. Type SFG, 60-70mm bore Jenvey Homepage

The SFG throttle body is the basis of the bodies which have proved so successful in the World, European and British Touring Car championships. It is normally configured to supply one or more banks of cylinders via a manifold and is suitable for use with high levels of boost. The lever mechanism has two springs and gives a rising-velocity opening rate. 'O' rings, throttle pot clamp and fitting kits are supplied with all sets.
Operating data; Cable travel: 46mm. Spring force to lift from idle: 10N; in last 1 degree: 25N, with exponential rise between.
Other items; Throttle potentiometers.