Close-up down the four throats of an aluminum 4-barrel carbureto…

Extreme close-up looking down the four venturis of a bare aluminum four-barrel carburetor, showing the polished bore walls, booster venturi rings and their support arms, and the cast web between the primary and secondary throats. A threaded stud hole and small vent passage are visible on the flange casting at left.

AI caption December 2009 · Photo 345 of 483