Singer Chamois Coupe

The Singer Chamois (Hillman Imp derivative) has a Coventry-Climax derived OHC engine, this one enlarged from standard 875cc to 998cc. Despite the small size, the high-revving nature of these engines mean that they pack a powerful punch.

With modified cylinder head and uprated cam, this Imp revs to around 8000 RPM with no problem, so it was an ideal candidate for the Canems Injection ECU. A combined inlet / exhaust manifold was produced (fabricated in mild steel), as these engines are non-crossflow. From here, four injection throttle bodies from a Suzuki GSXR600 motorcycle see to the fueling.

As the Imp was not originally intended for fuel injection, a swirl-pot was installed to ensure reliable fuel supply. A low pressure lift pump in the front brings petrol from the tank back to the swirl pot (and high pressure pump / filter).

With a high-revving engine like the Imp, the Canems ECU really comes into its own. Thankfully the rev-limiter in the Canems software keeps everything in one piece!