Originally introduced as a
convertible (roadster), a coupé (the
hatchbacked GT, almost a
shooting brake) version, with 2+2
seating, was introduced in 1965. The MGB featured a four-cylinder gas
engine. A derivative model, called the MGC featured a six-cylinder
engine and a later variant, called the MGB GT V8 fitted with the
ex-Buick
Rover V8 engine was made from 1973 to
1976. Combined production volume of MGB, MGC and MGB GT V8 models was
523,836 cars. A very limited-production "revival" model with only 2,000
units made, called RV8 was produced by Rover in the 1990s. Despite the
similarity in appearance to the roadster, the RV8 had less than
5 percent parts interchangeability with the original car.
The MGB was a relatively modern
design at the time of its introduction. It utilized a
monocoque structure
that reduced both weight and manufacturing costs as well as adding
chassis strength. This was a considerable improvement in comparison to
that of the traditional body-on-frame construction used on the earlier
MGA and T-type models as well as the MGB's rival, the Triumph TR series.
The design included wind-up windows and a comfortable driver's
compartment, with plenty of legroom and a parcel shelf behind the seats.
The MGB's performance was brisk
for the period, with a 0–60 mph (96 km/h) time of just over 11 seconds,
aided by the relatively light weight of the car. Handling was one of the
MGB's strong points. The 3-bearing 1798 cc B-Series engine produced
95 hp (71 kW) at 5,400 rpm. The engine was upgraded in October 1964 to a
five-bearing crankshaft in an effort to improve reliability. A majority
of MGBs were exported to United States. In 1974, as US air pollution
emission standards became more rigorous, US-market MGBs were de-tuned
for compliance. As well as a marked reduction in performance, the MGB
gained an inch in ride height and the distinctive rubber bumpers which
came to replace the chrome for all markets.
The MGB was one of the first
cars to feature controlled crumple zones designed to protect the driver
and passenger in a 30 mph (48 km/h) impact with an immovable barrier
(200 ton).
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