To add some more information about Geert Jan’s IDA carbs.
Webers are 48IDA 2c model.
Fully overhauled and ultrasonic cleaned august 2019 by me.
New brass floats and float height set to spec.
Idle jet, F9 -65
Main jet, 150
Emulsion tube, F11
Air correction, 180
All new Venturi, 40
Booster, 4.5
Acceleration jet, 50
It’s a blueprinted set of four 48IDA carbs.
Carb numbers, 48 IDA 4 IB, 48 IDA 4 ID, 48 IDA 4 M9, 48 IDA 4 IL.