MG J-type: Difference between revisions
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| name = MG J-Type |
| name = MG J-Type |
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| image = J2 advert.jpg |
| image = J2 advert.jpg |
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| manufacturer = [[MG (car)|MG |
| manufacturer = [[MG (car)|MG]] |
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| production = |
| production = 1932–1934<br />2494 made |
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| predecessor = [[MG C-type|MG C and D Type Midget]] |
| predecessor = [[MG C-type|MG C and D Type Midget]] |
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| successor = [[MG P-type|MG P-type Midget]] |
| successor = [[MG P-type|MG P-type Midget]] |
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| name = MG J1 |
| name = MG J1 |
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| image = |
| image = |
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| production = |
| production = 1932–1933<br />380 made |
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| engine = 847 cc [[Straight-4]] |
| engine = 847 cc [[Straight-4]] |
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}} |
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| image = MG J2 WH 4594 - 1933 (9086263143).jpg |
| image = MG J2 WH 4594 - 1933 (9086263143).jpg |
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| caption = J2 1933 |
| caption = J2 1933 |
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| production = |
| production = 1932–1934<br />2083 made |
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| engine = 847 cc [[Straight-4]] |
| engine = 847 cc [[Straight-4]] |
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}} |
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| name = MG J3 |
| name = MG J3 |
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| image = |
| image = |
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| production = |
| production = 1932–1933<br />22 made |
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| engine = 746 cc [[Straight-4]] |
| engine = 746 cc [[Straight-4]] |
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| name = MG J4 |
| name = MG J4 |
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| image = MG J4 750ccm75PS 1933.JPG |
| image = MG J4 750ccm75PS 1933.JPG |
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| production = |
| production = 1932–1933<br />9 made |
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| engine = 746 cc [[Straight-4]] |
| engine = 746 cc [[Straight-4]] |
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The '''MG J-type''' was produced by |
The '''MG J-type''' is a [[sports car]] that was produced by [[MG (car)|MG]] from 1932 to 1934. This 2-door sports car used an updated version of the [[overhead camshaft]], [[crossflow]] engine, used in the 1928 [[Morris Motors|Morris Minor]] and [[Wolseley Motors|Wolseley]] 10 and previously fitted in the [[MG M-type]] Midget of 1929 to 1932, driving the rear wheels through a four-speed non-[[synchromesh]] gearbox. The chassis was from the D-Type with suspension by half-elliptic springs and Hartford friction shock absorbers all round with rigid front and rear axles. The car had a wheelbase of 86 inches (2184 mm) and a track of 42 inches (1067 mm). Most cars were open two-seaters, but a closed salonette version of the J1 was also made, and some chassis were supplied to external coachbuilders. The open cars can be distinguished from the M type by having cut-away tops to the doors. |
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==J1== |
==J1== |
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Revision as of 11:08, 22 July 2015
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.jpg)
The MG J-type is a sports car that was produced by MG from 1932 to 1934. This 2-door sports car used an updated version of the overhead camshaft, crossflow engine, used in the 1928 Morris Minor and Wolseley 10 and previously fitted in the MG M-type Midget of 1929 to 1932, driving the rear wheels through a four-speed non-synchromesh gearbox. The chassis was from the D-Type with suspension by half-elliptic springs and Hartford friction shock absorbers all round with rigid front and rear axles. The car had a wheelbase of 86 inches (2184 mm) and a track of 42 inches (1067 mm). Most cars were open two-seaters, but a closed salonette version of the J1 was also made, and some chassis were supplied to external coachbuilders. The open cars can be distinguished from the M type by having cut-away tops to the doors.
J1
The J1 was the four-seat car in the range. The engine was the 847 cc unit previously seen in the C-type with twin SU carburetors giving 36 bhp. The car cost £220 in open and £225 in Salonette form.[1]
J2
The J2, a road-going two-seater, was the commonest car in the range. Early models had cycle wings, which were replaced in 1933 by the full-length type typical of all sports MGs until the 1950s TF. The top speed of a standard car was 65 mph (105 km/h),[1] but a specially prepared one tested by The Autocar magazine reached 82 mph (132 km/h). The car cost £199.
The most serious of the J2's technical failings is that has only a two-bearing crankshaft, which can break if over-revved. The overhead camshaft is driven by a vertical shaft through bevel gears, which also forms the armature of the dynamo. Thus any oil leak from the cambox seal goes into the dynamo brushgear, presenting a fire hazard.
Rather than hydraulic brakes the car has Bowden cables to each drum. Although requiring no more pedal force than any other non-power-assisted drum brake if they are well maintained, the drums themselves are small, and even in period it was a common modification to replace them with larger drums from later models.
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J3
The J3 was a racing version with the engine capacity reduced to 746 cc by shortening the stroke from 83 to 73 mm and fitted with a Powerplus supercharger. The smaller engine capacity was to allow the car to compete in 750 cc class racing events. Larger brakes from the L-type were fitted.[1]
J4
The J4 was a pure racing version with lightweight body work and the J3 engine, but using more boost from the supercharger to obtain 72 bhp.
References
- ^ a b c Sedgwick, Michael; Gillies, Mark (1993). A-Z of Cars of the 1930s. Bay View Books. ISBN 978-1-870979-38-2.
Further reading
- Green, Malcolm (1997). MG Sportscars. CLB International. ISBN 1-85833-606-6.
{{cite book}}: Unknown parameter|separator=ignored (help) - Sedgwick, Michael; Gillies, Mark (1989). A–Z of Cars of the 1930s. Bay View Books. ISBN 1-870979-38-9.
{{cite book}}: Unknown parameter|separator=ignored (help)
External links
