Originally Posted by
welshwizard
I used to service and repair TR5/TR6 models back in the 1970s. In the UK, they used a Lucas/Tecalemit Jackson fuel injection system with shuttle metering. Anything that caused loss of manifold vacuum, such as a burned valve, caused the mixture to go very rich. We were told that USA spec. models had twin carburettors instead, to comply with stricter US emission laws. Just wondering if that was true.
We also restored an MG TD (XPAG engine). Sadly no pictures, all I can remember nearly 50 years on is that it was red.