Morgan Plus 4: green roadster

The Morgan Plus 4 (or +4) is an automobile produced by the Morgan Motor Company. It is a more powerful and, in the case of the earlier cars, a slightly longer version of the company’s previous 4/4 model. Plus 4 production ran from 1950 to 1969. It was revived in 1985 and filled the gap between the 4/4 and the Plus 8 until 2000. It was again produced from 2005 until it was replaced in 2020 by the “all new” Plus Four built on a bonded aluminium platform.

The Plus 4 at its introduction was fitted with a 2088 cc Standard Vanguard engine installed on a widened and strengthened 4/4 chassis with a wheelbase lengthened by 4 in (102 mm). Hydraulic brakes, initially 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 (a development of the Vanguard motor). 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 1955 the 1991 cc Triumph TR3 engine was used and from 1962 the engine was the Triumph TR4 unit, which increased displacement to 2138 cc.

In 1955 the less powerful 4/4 model re-appeared in phase II form. The 96 in (2,438 mm) wheelbase of the Plus 4 was adopted by the 4/4 when it reappeared, after which the two models were for most purposes the same length and width.

The Plus 4 originally fitted 5.60-15 crossply tyres, then 165R15 Pirelli Cinturato radial tyres. Later Plus 4 fitted 195/60R15 modern tyres, which do not ride as nicely or handle as well with the Morgan chassis. A plus 4 is nicer to drive retro fitted with period 165R15 tyres, which also offer the ability to fit an inner tube which is much safer on a wire wheel.

Body styles available were a 2-seat sports, 4 seat sports and more luxurious 2 or 4 seat drophead coupé (and a 4 seat coupé 1954–1956 only). In 1963 a fibreglass bodied coupe Morgan +4+ was announced, but only 26 were built.


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