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saloon 1954/55 with monocoque body construction followed the forward design thinking of Heynes and his engineers, post war. This was later in 1961 followed by a world leading independent rear suspension designed by Heynes and developed with R J Knight. This unit remained the standard rear suspension
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At the end of 1969 he retired as Vice
Chairman and Technical Director of Jaguar, after 35 years. Following his retirement it was reported that he intended to "devote enthusiasm to his farm whilst maintaining strong motor industry links and advising and assisting his close factory relationship with
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Heynes designed the first
British monocoque (unitary) saloon 2.4 and 3.4 models 1955, followed by Mk 2 models with 3.8 litre XK engine. The earlier Jaguar saloon cars from 1950 Mk7 Mk8 Mk9 continued in production with 3.4 3.8 engines until 1961. Heynes was responsible for the Mk 10 saloon October
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Sir
William Lyons was persuaded by William Heynes to enter motor racing in 1950 with XK120 works prepared, privately entered cars at Le Mans; this was followed by winning the Le Mans 24 hour race in 1952 1953 with the C Type and 1955 /56 /57 with his monocoque designed D type. Heynes continued to
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Heynes with Sir
William Lyons designed and engineered the XJ6 saloon, launched in September 1968. The model was voted best car of the year and laid the foundation for the next seventeen years. The XJ6 success was followed by XJS using similar chassis platform and V12 power units designed and
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1961, which incorporated new front suspension in conjunction with a new independent rear suspension also designed for the E Type introduced earlier in 1961. Introducing two new models in the same year determines his great engineering and design strength from a small talented engineering team.
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in 1958/59 Le Mans and with the full race lightweight E Type 3.8 in 1962/63/64. A mid engined V12 race prototype XJ13 was designed 1964 and tested until cancellation of this last Heynes engineered race car during the company merger with
87:. Heynes, who was appointed to the main Board of Director as Technical Director and Chief Engineer (1946), had earlier persuaded the chairman William Lyons that the company should make its own range of engines. During late war time the
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was completed and tested in 1966 with competitive lap times at
Silverstone prior to the project being cancelled. The V12 engine continued to be developed in line with emerging emission regulations for Series 3 E-Type and XJ12 / XJS.
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in
Coventry in 1922 as a student where he worked in the drawing office before becoming head of the technical department in 1930. During this time he oversaw the introduction of significant models including the
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Heynes was Chief
Engineer from 1935 until his retirement. As Chief Engineer and Technical Director he was responsible for all Jaguar design / engineering from 1935 up to and including XJS.
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With Dunlop he was responsible for the Disc Brake joint development in 1952 and later Heynes following racing experience pioneered and introduced the system on all Jaguar cars. The
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engines then being used. He worked on development of an overhead-valve conversion for the
Standard 6-cylinder engine. One of the first cars to ever have it installed was the
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161:(consultant), Walter Hassan and Claude Baily designed the 6-cylinder XK engine, that proved to be the biggest and longest lived success of Jaguar. In 1964 the first
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sports car. The XK engine remained in production in 2.4, 2.8, 3.4, 3.8 and 4.2 models and was a significant design as the mainstay of the company for 35 years.
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Heynes always acknowledged his engineering team which he had directed and built up from 1935 and their contribution to the success of Jaguar.
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for his services to exports and vehicle design. His responsibilities were taken over by R. J. ("Bob") Knight (Chief
Vehicle Engineer) and
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72:. Initially he worked on the chassis and suspension but was also responsible for increasing the power output of the modified
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239:(Chief Engineer, Power Units), both of whom were appointed to the company's board as part of their promotion.
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was designed and later developed with a launch in 1948 at the London Motor Show with the new
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Heynes designed the XK range of sports cars XK120 XK140 XK150, including full design of the
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prototypes were produced and developed and tested. A prototype race car was initiated for
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support private race entrants from the experimental competition section, including
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saloon cars. A similar design was introduced on all E-Types from 1961 to 1975.
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Heynes was educated at
Warwick School from 1914 to 1921 before joining the
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1947 and XK120 1948 and was used on all XK sports cars and
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Shortly before his retirement he was honoured with a
184:1951 followed by his monocoque body design of the
335:"William Heynes Archives - Building The Legend"
373:Commanders of the Order of the British Empire
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83:Following World War II, SS Cars was renamed
224:William Lyons and the Jaguar directors,
33:(31 December 1903 – July 1989), born in
278:Beaulieu Encyclopedia of the Automobile
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217:initiated by Heynes before retirement.
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200:, the forerunner of the E Type, and
196:in the USA with a single prototype
188:1954, followed by the E-Type 1961.
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157:His team of engineers including
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368:British automotive engineers
136:torsion bar front suspension
28:William 'Bill' Munger Heynes
310:""Jaguar" Heynes retires".
64:takeover, he was chosen by
16:English automotive engineer
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363:People from Leamington Spa
60:In April 1935, after the
339:buildingthelegend.co.uk
237:W.T.F. ("Wally") Hassan
130:The Heynes design with
123:Series 1, 2 and 3, and
74:Standard Motor Company
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345:on 30 September 2020.
226:F.R.W "Lofty" England
41:automotive engineer.
23:William 'Bill' Heynes
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320:: 50. 9 August 1969.
169:. A single V12 car
138:was introduced on
46:Humber Car Company
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228:and Bob Knight."
194:Briggs Cunningham
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341:. Archived from
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280:. London: HMSO.
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103:thirty years in
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134:development of
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209:in July 1966.
55:Humber Pullman
35:Leamington Spa
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254:Walter Hassan
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159:Harry Weslake
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78:SS Jaguar 100
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66:William Lyons
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343:the original
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274:Georgano, N.
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121:XJ6 and XJ12
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62:Rootes Group
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51:Humber Snipe
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27:
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388:Jaguar Cars
383:1989 deaths
378:1904 births
249:Harry Mundy
70:SS Cars Ltd
357:Categories
260:References
163:V12 engine
313:The Motor
89:XK engine
37:, was an
276:(2000).
243:See also
144:Mark VII
100:Mk 1 2.4
68:to join
53:and the
316:. nbr.
167:Le Mans
39:English
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186:D-Type
182:C-Type
140:Mark V
113:S-Type
109:Mark X
105:E-Type
85:Jaguar
93:XK120
318:3503
282:ISBN
171:XJ13
150:and
148:VIII
233:CBE
207:BMC
198:E2A
125:XJS
117:420
31:CBE
359::
337:.
326:^
296:^
152:IX
146:,
127:.
119:,
115:,
111:,
107:,
80:.
57:.
290:.
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