Pair of Amal 389 Monobloc carburettors used for competition. One is DBD34 Gold Star Scrambler 389/13 with the float bowl. Both 1 + 1/8″. Fitted with velocity stacks.
The other one has been over-stamped. It’s definitely a 389 Monobloc Amal, but it’s not a “389/20” as the stamp would suggest. That would be for an Indian Woodsman.
This pair are still attached to a throttle. They will need a thorough clean. They could do with a service really. I happen to know someone who can do this.
What I think has happened here is that someone wanted to power their DBD34 Scrambler. They “chopped off” the float chamber on another similar size carb and shared the single float bowl. Presumably this made a scrambler much easier to manage the fuel with just one float. I gather the Norton 650SS also used something similar.
The spec for the new 389/13 Amal is:
- 3 Cutaway Slide
- 300 Main Jet
- 106 Needle jet
- 25 Pilot Jet
These are being offered to one person as a possible replacement for a pair of Amal 276’s in a racing Morgan.