Morgan +4

The Morgan Plus 4 (or +4) is an automobile which was produced by the Morgan Motor Company from 1950 to 1969. It is a more powerful and, in the case of the earlier cars, slightly longer version of the company's 1950 4/4 model. The Plus 4 was revived in 1985 and filled the gap between the 4/4 and the Plus 8 until 2000; it was again revived in 2005.

History

After World War II Morgan had re-introduced their 4/4 model fitted with a 1267 cc Standard engine. This continued in production until 1950 when it was replaced by the larger Plus 4 announced at the 1950 Earl's Court Motor Show.

The Plus 4 at its introduction was fitted with a 2088 cc engine based on that used in the Standard Vanguard, installed on a strengthened 4/4, chassis with a wheelbase lengthened by 4 in (102 mm). Hydraulic brakes, at first all drum, were fitted for the first time on a Morgan.

In 1953 a higher performance version was announced with the 1991 cc I4 engine as used in the Triumph TR2. The radiator grille was now surrounded by a cowl that blended into the bonnet. Front disc brakes became an option in 1959 and were standardised in 1960. From 1962 the engine was the Triumph TR4 unit, which increased displacement to 2138 cc.

Morgan +4+

The Morgan Plus 4 Plus or +4+ was an attempt by the Morgan Motor Company to modernize the bodywork, somewhat similar to the Aero 8. Only 26 were built, due to poor sales, in spite of its performance.

The equipment may have varied, but an example sold in 1969 was mechanically similar to the Morgan +4 of the same year. It had the straight 4 pushrod engine of a Triumph TR4A, giving 110 hp (82 kW). The transmission was 4 speed with synchromesh on 2nd, 3rd and 4th. It also shared the suspension with the +4. In front, it had sliding king pins tilted 17 degrees from the vertical, a development of a 1910 design. This was lubricated by grease and by engine oil released by a button under the clutch pedal. It had coil springs (very hard) and bottoming coils instead of rubber pads. The rear had conventional leaf springs with solid rear axle. There was no perceptible body lean, even when cornering very hard. It had disc brakes in front, drums in the rear, hard pedal pressure with no power assist. The frame was Z section steel rails with structural plywood floor, extended by steel tubes in front.