Phoenix SU Carburetter Conversion Kit for Norton Commando
Download the complete PDF version using the green download button at the top right of this page for the Phoenix Motorcycles SU carburetter conversion brochure for Norton Commando 850 and 750 models. This period sales brochure describes the SU HIF6 carburetter conversion kit developed by Phoenix Motorcycles as a no-frame-modification alternative to the Norton factory SU-equipped Commando development work.
The brochure explains that the kit was developed using chassis dynamometer testing and road testing in varied weather conditions, with input from SU Fuel Systems. It claims road performance comparable with twin-carburetter models, while improving tractability, low-rpm throttle response, idle reliability and reducing the need for repeated twin-carb balancing.
The kit contents include a special SU HIF6 carburetter, purpose-made manifold, special bellmouth, gaskets, bolts, screws, foam air filter, control cables and illustrated fitting instructions. The brochure also notes that the kit could be transferred to another machine later if the original parts were retained.
Contents Include
- Phoenix SU carburetter conversion for Norton Commando 750 and 850
- SU HIF6 carburetter conversion details
- No frame modification required
- Dyno and road testing notes
- Improved tractability and low-rpm throttle response
- Reduced twin-carb balancing maintenance
- Special manifold and bellmouth information
- Foam air filter and control cable details
- Fitting instruction and kit contents overview
- Notes on transferring the kit to another Commando
