In the summer of 1939, as the war clouds were gathering, MG announced the TB Midget. In terms of chassis and body options it was essentially the same as the TA, but the TB had a new engine which was a 1250cc, ohv, four-cylinder unit. Taken from the new Morris 10, and known as the XPAG engine, it had a much stronger bottom-end than the previous unit, better valve timing and a better designed cylinder head. These design features combined to give a power output of 45bhp.
MG TB 1939
The engine was backed up by a dry clutch and
a better set of ratios than before with an improved synchromesh. All of this
meant that the little car looked very promising indeed, but the onset of war
stopped production as MG had other, more important, tasks to carry out.
The MGTA suffered from a poor performing engine and in 1939 the MGTB was introduced with the now famous XPAG engine. Only a few were produced as in a few months World War II broke out. At the outbreak of the Second World War in 1939, production of cars at MG in Abingdon had given way to production and maintenance of machines of war, as it had at most other engineering plants over the whole country. A very wide variety of jobs were undertaken, ranging from servicing guns and production of aircraft parts to overhauling tanks. No job was too large, too small, or too difficult for the workers at MG.
MG TB 1939