Metering needle
Product number:
552613
fixed type for SU carburettors - marked: SH
Product Information "Metering needle"
Rolls Royce and Bentley: Rolls Royce Silver Dawn and Silver Wraith plus Bentley R Type with SU-H6 Carburettors with reference no. AUC594 (1952-55) • Rolls Royce Silver Cloud I and II plus Bentley S1 and S2 with SU-HD6 Carburettors with reference no. AUC988 (1955-60)
fixed type for SU carburettors - marked: SH
Fixed metering needles have to be dead centre in the hole of the jet so take some time to fiddle around with them to get this right. If it is not correct the fixed needles won't fall completely onto the bridge in throat of the venturi of the carb resulting in poor light throttle running.
Please note: the needle choice will depend on range of engine modifications.