The MG TA
At this point we diverge from generally accepted MG history. Strictly speaking, the Type TA was a continuation of the line of Midgets that terminated in 1936 with the PB, but its size and characteristics differed so greatly that it seems to belong with the medium-sized Magnette category.
Like Kimber's first M-Type, this Nuffield roadster had a modified Morris engine - basically a "ten-four.”
With a long stroke, three-port exhaust, and wet cork-faced clutch the TA was smooth but very definitely limited to 4800rpm. Three years of experience showed exactly what was needed, and a gross redesign in 1939 turned up the plucky TB, which only the most knowledgeable Midgetophile can distinguish from the familiar TC.
The TB's willingness to work hard and long quickly won over the hardened, sceptical PB fans; the reasons why will be fully covered further on.
With the remarkable exception of the R-Type, MG development from FC 7900 to the outbreak of World War 2 was unwaveringly traditional and always lovingly shaped by Kimber, Charles, and company. Racing, trials, and record runs, by the "works" and by private owners, proved the cars and pointed the way for the next editions. If something broke, it was made thicker. If it was too heavy, it was drilled. If it moved, it was tied down.
The resulting cars, produced in quantity for racing and touring were rugged yet refined, and were probably the best small sports machines the world had then known. Only a diamond-hard and jealous core of enthusiasts had ever heard of, let alone owned an MG, though. Abingdon's greatest days were yet to come.
Also see:
MG Heritage
MG
Performance Chart 
