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1967 Jaguar E-Type Series I½ Roadster

1967 Jaguar E-Type Series I½ Roadster

1967 Jaguar E-Type Series I½ Roadster

In 1968 the E-Type was treated to a number of evolutionary upgrades that maintained the cars standing with USA American market regulations. The series Series I½ designation is an unofficial term for these interim cars which bridged the gap between Series I and Series II cars.

Federal emissions regulations forced Jaguar to reconsider their intake system. After reviewing exhaust-air injection and fuel injection, a clever system employing a duplex manifold system and twin Zenith Stromberg carburetors was used. Only the American Series I½ cars featured Strombergs, while the European cars still used triple SU carburettors.

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Picture Gallery

The most obvious change was the deletion of the front headlight covers which improved the outward vision at night and provided better access for servicing.

Later Series I½ Roadsters featured the new Series II interior with plastic rocker switches, flush choke and heater controls, a combination ignition and starter switch and recessed interior door handles. Some early Series I½ cars still had the early toggle-switch dashboard and these are sometimes refereed to as Series 1¼.

In total, Jaguar made 21 changes to the US Federal cars that distinguished it from the series 1 cars. They were first seen at the 1968 New York Motor Show and coincided with the release of the Dunlop SP Sport CB73 radial tire.

1,942 cars were made to Series I½ specification and adopted the 1E chassis number scheme that was common to all 4.2 Series I cars.

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Specs & Performance

type Series Production Car
released at 1968 New York Motor Show
built at England
price £/td> £1,568
engine Inline-6
position Front, Longitudinal
aspiration Natural
ignition Lucas Type 22D6 Distributor & Lucas HA12 Coil
block material Cast Iron w/Aluminum Cylinder Head
valvetrain Chain-Driven DOHC
fuel feed Twin Zenith-Stromberg Carburetors , HD8 2
displacement 4235 cc / 258.44 in³
bore 92.07 mm / 3.625 in
stroke 106.0 mm / 4.173 in
compression 9.0:1
power 183.4 kw / 246 bhp @ 5400 rpm
specific output 58.09 bhp per litre
bhp/weight 220.23 bhp per tonne
torque 383.7 nm / 283 ft lbs @ 4000 rpm
body / frame Unitary Steel Monocoque w/Reynolds 531 Front Frame and Stamped Rear Steel Subframe
driven wheels RWD w/Thornton PowrLok Limited Slip Differential
wheel type 72-Spoke Knock-Off Wire Wheels
front tires Dunlop SP 6.40x15R55
rear tires Dunlop SP 6.40x15R55
front brakes 11 inch Dunlop Discs w/Servo Assist
f brake size 9.5 x 279.4 mm / 0.37 x 11 in
rear brakes 10 inch Dunlop Discs w/Servo Assist
r brake size 9.5 x 254.0 mm / 0.37 x 10 in
steering Rack & Pinion
f suspension Wishbones w/Torsion Bars, Hydrualic Telescopic Dampers, Anti-Roll Bar
r suspension Half Shafts w/Transverse Links, Twin Coil Springs, Hydrualic Telescopic Dampers, Anti-Roll Bar
curb weight 1117 kg / 2463 lbs
wheelbase 2438.4 mm / 96 in
front track 1270.0 mm / 50 in
rear track 1270.0 mm / 50 in
length 4451.3 mm / 175.25 in
width 1657.3 mm / 65.25 in
height 1219.2 mm / 48 in
transmission Model 8 Borg Warner 4-Speed Manual
tran clutch 10in Laycock-Hausserman Diaphram Clutch
gear ratios 2.68:1, 1.74:1, 1.27:1, 1.00:1
final drive 3.07:1
fuel capacity 63.64 litres or 16.80 gal.

Auction Sales History

1968 Jaguar E-Type Series I½ Roadster 1E17502 – sold for $89,100 Numbers matching example. Late, open headlight Series 1.5.Prepared for active use and enjoyment.Accompanied by original tools and Jaguar Heritage Trust Certificate.
Auction Source: The Amelia Island Auction 2015 by Bonhams

1968 Jaguar E-Type Series I 4.2-Litre Coupe 1E 34580 – sold for $48,400 Fascinating Very Early Open-Headlamp E-Type Coupe. Original Left-Hand-Drive Export Coupe with Preferred Manual Gearbox. Pictured and Discussed in Thomas Haddock’s E-Type Guide. Highly Original, Unrestored Condition. Accompanied by a JDHT Certifcate.
Auction Source: The 2015 Amelia Island Auction by Gooding & Company

1967 Jaguar E-Type Series I½ Roadster 1E15082 – sold for $82,500 Highly original example with fewer than 64,000 miles from new. Matching numbers E-Type presented in factory-delivered color combination. Few owners since new. Rally and Concours d’Elegance veteran. Accompanied by hard top, books, tools, history file and Jaguar Heritage Trust Certificate.
Auction Source: 2014 Quail Lodge Auction by Bonhams

1967 Jaguar E-Type Series 1 4.2-Litre Roadster 1E 15857 – sold for $90,750 A Very Desirable Late Series 1 Convertible. Matching-Numbers Example. Approximately 38,000 Original Miles Only Three Owners from New. Fully Documented Bare-Metal Restoration. Accompanied by a JDHT Certificate.
Auction Source: The 2013 Amelia Island Auction by Gooding & Company

1968 Jaguar XKE Roadster – sold for $34,500 1968 series 1 1/2 Roadster. Long term one family owned.
Auction Source: 2011 Monterey Daytime Auction by Mecum

1968 Jaguar E-Type Series I½ Roadster 1E16646 – sold for $104,500 The 1968 Jaguar E-Type Series 1½ presented here, with chassis number 1E16646, has enjoyed limited ownership in Southern California and has recently been restored by Jaguar professionals. It has also received a full detail and service by Southern California marque specialists Classic Showcase before its debut at auction. During restoration the body was stripped and completely repainted. Brightwork was also re-chromed, and new rubber and seals w… read more
Auction Source: 2011 Monterey Auction by RM

1967 Jaguar E-Type 4.2 Series 1.5 Open Two-Seater – sold for $50,310 In anthracite or gunmetal grey and with a red interior, this car is understood to have been the subject of a restoration in the early 2000s, which provided the previous owner with a tidy example of the model, lightly modernized in terms of choosing a modern metallic paint. The car has been in this collection for the last four years and since its odometer reads a little under 1,000 miles we anticipate that this is the sum total of road miles on… read more
Auction Source: Bonhams 2010 Exceptional Motorcars and Automobilia