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.
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.
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
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
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