MG J-Type
The MG J -type was built by MG from September 1932 to March 1934. The two - door sports car was powered by an engine with an overhead camshaft ( OHC ), as used essentially already in the Morris Minor and Wolseley Ten and 1929-1932 in the MG M-Type, here in a revised version with cross-flow cylinder head. The engine power was routed through a non-synchromesh four-speed gearbox to the rear wheels. The chassis was from the MG D-Type and had the front and rear of semi-elliptical leaf springs suspended rigid axles, which were provided with Hartford friction shock absorbers. The car had a wheelbase of 2184 mm and a track width of 1,087 mm. Most variants were open two-seater, but there was also a closed Salonette version of the J1 and some chassis went to an independent body corporate. The open cars can be from M-Type differ in that they have low-cut doors.
J1 Midget ( 1932-1933 )
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The J1 was the four-seater of the quartet. The engine had 847 cc, had previously been used on C-Type and delivered with twin SU carburettors 36 bhp ( 26.5 kW) at 5500 rpm. The car cost as an open roadster £ 220 and £ 225 as Salonette total of 380 units were built.
J2 Midget ( 1932-1934 )
MG J2 Midget (1933 )
The J2 was the best-selling version of the series, a two-seater for the road. Early vehicles had narrow, fixed mount Radkotflügel, but in 1933 they got the long wings, which were typical for all MG TF until the 1950s. The top speed of a production model was 104 km / h and one for the magazine The Autocar specially made-up copy reached 131 km / h The car cost £ 199 Sh 10, it emerged in 2083 pieces. For an extra charge of £ 12 Sh 12 the buyer received the following accessories: temperature indicator, electric clock, leather straps for the hood and guard for the headlights.
The engine showed - as with all J -type models - in practice, shortcomings in the wrong way of driving and lack of maintenance: If the motor rotates, the only two bearing crankshaft can break easily. Furthermore, it was easy for vehicle fires: The overhead camshaft is driven by a vertical shaft with bevel gears (so-called vertical shaft). At this wave also sits on the alternator. If the camshaft housing leaking, the leak oil can burst at the collector of the alternator.
The J- type had no hydraulic brakes, but mechanical, operated by cable. These require regular maintenance and, if necessary, an adjustment to function reliably and evenly. The low brake performance of the comparatively small brake drums led already during the construction of this model many drivers to convert the vehicles to larger drums other MG models.
The gearbox is not synchronized according to the construction period and requires double domes and any interim gas to prevent gear noise and high wear.
J3 Supercharged ( 1932-1933 )
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The J3 was a racing car whose engine displacement to 73 mm was only 746 cc by reducing the stroke of 83 mm and equipped with a Power Plus compressor. Due to the lower engine capacity of the car was able to start in the 750 cc class. He had the larger brakes of the L- type Magna. 22 vehicles created by this execution.
J4 Supercharged (1933 )
MG J4 Supercharged (1933 )
The J4 was a pure race car with a lighter body and the engine of the J3, but a power of 72 bhp reached by higher boost pressure (53 kW) at 6000 rpm. Only nine cars were built of this model.