TVR Grantura

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TVR Grantura
TVR Grantura in Morges 2012 - Rear.JPG
Overview
Manufacturer TVR
Production 1958–1967
Assembly Blackpool, England
Body and chassis
Class Sports car
Layout FR layout
Chronology
Successor TVR Vixen

The TVR Grantura is the first model in a long line of TVR cars and debuted in 1958. The cars went through a series of developments leading to the I to IV and 1800S models. The last ones were made in 1967.

These coupés were hand-built at the TVR factory in Blackpool, England with varying mechanical specifications and could be had in kit form. All cars featured a cocktail of Austin-Healey brakes, VW Beetle or Triumph suspension parts and BMC rear axles.

The Grantura bodyshell was made from glass-reinforced plastic and made use of a variety of proprietary components. The bonnet was front hinged. There was no opening at the rear but the boot could be accessed from inside the car - the spare wheel had to be removed through the front doors. Buyers could choose from a range of powerplants which included a choice of side or overhead valve engines from Ford, a Coventry Climax unit or the MGA B-series engine.

Series I[edit]

TVR Grantura Series I
Overview
Production 1958–1960
Layout FR layout
Powertrain
Engine 1,098 cc straight-4
1,172 cc straight-4
Dimensions
Wheelbase 83.5 in (2,121 mm) [1]
Length 136.5 in (3,467 mm) [1]
Width 65.5 in (1,664 mm) [1]
Height 47 in (1,194 mm) [1]

The first of the Granturas used a fibreglass body moulded to a tubular steel backbone chassis and VW Beetle-based front and rear suspension. The car was designed around a 1,098 cc Coventry Climax type FWA engine but many different makes were fitted from 1,172 cc Ford side valve to 1600 cc BMC from the MGA. The drum brakes originated on the Austin Healey 100 and the windscreen on the Ford Consul.[2]

Approximately 100 of the series I Grantura were built from 1958 to 1960.[3]

Series II[edit]

TVR Grantura Series II
1962 TVR Grantura IIA Montlhéry.jpg
Overview
Production 1960–1962
Layout FR layout
Powertrain
Engine 1,216 cc I4 Coventry Climax FWE
1,340 cc straight-4
1,588 cc straight-4
1,622 cc straight-4

The Series II had MGA engines as standard but again customers could choose from a variety of power units. The IIA used the 1,622 cc MGA or Ford 1,340 cc engine and front disc brakes were standard. Rack and pinion steering was standardised.

A car with a 1600 cc MGA engine was tested by the British magazine The Motor in 1961. It had a top speed of 98.4 mph (158.4 km/h) and could accelerate from zero to 60 mph (97 km/h) in twelve seconds. Fuel consumption of 32.8 miles per imperial gallon (8.6 L/100 km; 27.3 mpg-US) was recorded. The test car cost £1,298 including taxes.[1]

Rear end of 1962 Series IIA

Approximately 400 of the series II Grantura were built.[3]

Series III, Series III 1800, 1800S and IV[edit]

TVR Grantura Series III, Series III 1800, 1800S, and MkIV
TVRGrantura.jpg
Overview
Production 1962–1967
Layout FR layout
Powertrain
Engine 1,622 cc straight-4
1,798 cc straight-4
Dimensions
Wheelbase 85.5 in (2,172 mm)[4]
Length 138 in (3,505 mm)[4] (SIII, SIII 1800, 1800S)
141.5 in (3,594 mm)[4] (MkIV)
Width 64 in (1,626 mm)[4] (SIII, SIII 1800, 1800S)
65.5 in (1,664 mm)[4] (MkIV)

The final series of cars had a new, longer and stiffer chassis and coil sprung independent suspension. This chassis was designed by John Thurner and would form the basis of the one used by TVR up to the launch of the 2500M cars in 1972.

The Series III and Series III 1800 used MG engines, either 1,622 or 1,798 cc respectively, although Ford or Coventry Climax units were also available for the earlier Series III model.[5]

In 1964 the car became available as the 1800S with a cut off, square back (called a 'Manx tail' after the similarly tailless breed of cat) and round rear light clusters from the Ford Cortina. The chassis used for the 1800S and all subsequent Granturas was a very slightly modified version that allowed more space for the engine to fit in. This was an alteration made to the Grantura chassis to allow it also to be used as the basis for the new Griffith, a car that sported a V8 engine which was larger both in capacity and physical dimension.

After a stop in production in 1965, under Martin Lilley's new ownership the 1800S reappeared in 1966 as the longer MkIV.[3] The MkIV also featured better trim and a larger fuel tank.[5]

Approximately 300 cars were built (estimated to be 60 of the Series III, 30 of the Series III 1800, 128 of the 1800S and 78 of the MkIV) before being replaced by the Vixen.[3]

Grantura MkIV with Cortina taillights

TVR Grantura in pre-1966 Historic Racing[edit]

The Series III 1800, introduced in September 1963, is the rarest variant but by far the most popular model for pre-1966 historic racing as it was homologated with wider wheels than the original Series III as well as slightly larger carburettors and the option to use a limited slip differential. The Series II and the initial version of the Series III had their own distinct sets of homologation papers and, for racing purposes, many of the cars that were originally built as these models have been since modified to run to the later Series III 1800 specification.

The TVR Grantura is eligible for a wide range of historic racing and the smaller engined Series III cars (MG engined, 1622cc) built to 1962 specification are eligible to run in the prestigious bi-annual Classic Le Mans race for cars that competed in period at Le Mans.

References[edit]

  1. ^ a b c d e "The T.V.R. Grantura". The Motor. March 29, 1961. 
  2. ^ Sedgwick, M.; Gillies.M (1986). A-Z of Cars 1945-1970. Devon, UK: Bay View Books. ISBN 1-870979-39-7. 
  3. ^ a b c d Robson, Graham (2006). A–Z British Cars 1945–1980. Devon, UK: Herridge & Sons. ISBN 0-9541063-9-3. 
  4. ^ a b c d e James M. Flammang (1994). Standard Catalog of Imported Cars, 1946-1990. Iola, WI: Krause Publications, Inc. pp. 616–617. ISBN 0-87341-158-7. 
  5. ^ a b Lawrence, Mike (1991). A to Z of Sports Cars. Bideford, Devon: Bay View Books. pp. 309–310. ISBN 1-870979-81-8.