The P-type MG Midget was
the successor of the MG J-type.
A total of 2.499 P-types have been built from 1934 until 1936.
Two models were built; first the MG PA and from 1935 the MG PB. The
latter was fitted with a larger engine.
The MG Q-type
was a racing car based on the MG P-type. With the Q-type MG wanted to
prove that the new engine (introduced in the P-type with three crank
bearings) was much stronger and much more reliable than the old Midget
engine which featured only two crank bearings. The new engine gave
greater smoothness and tuning potential.
MG stated that the factory warranty on the engine was even valid when a
supercharger was used to tune the engine...
A total of 8 Q-type racingcars have been built. The cylinder capacity of
the engine was decreased from 847 cc. to 746 cc. and a supercharger was
fitted. The engine developed a minimum capacity of 110 bhp. In full race
specification the engine gave away an impressive 147 bhp. at 7500 rpm.!
This was the biggest performance ever achieved by a prewar engine in its
days.
the Q-type used the rear axle of the MG N-type. Because the axle could
not cope with the maximum power output of the engine a Wilson pre-selector
gearbox was used. The gearbox was allowed to slip when overpowered and
it protected the rear axle this way. The modified PB-chassis was also
not strong enough to cope with this powerful engine... Today only five
original MG Q-types exist.
Technical
data
Four cylinder
in-line engine
S.U. carburettor with Marchal supercharger
cylinder capacity: 849 cc.
capacity: unknown
top-speed: unknown
brakes: drum brakes all round.
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