Weber 38 DGMS - Manual Choke carburettor Greater improvements in throttle response and engine performance can be achieved by using the 38 DGMS synchronous-opening model. A high performance alternative to most DGV applications ranging from 4 to 8 cylinder engines. A very popular upgrade to the 32/36 DGAV as fitted to Ford 2L Pinto engines. Factory Jetting Calibrations: Main Venturi 27mm, Aux Venturi 4.0, Main Jet 142, Air Corrector 185, Emulsion Tube F50, Idle jet 50, Pump jet 55, Needle Valve 250
