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1966 Lotus Elan S2 S/E

1966 Lotus Elan S2 S/E

As the Elan became more of a commercial success, Lotus began to offer a different options including the S/E package with more features. It was immediately distinguished with knock-off wheels and small S/E badge on the fender.

The S/E was a heavier car with some interior more appointments such as safety belts and deluxe carpeting and a dual-circuit master cylinder with vacuum assist.

It also got a “C” camshaft that raised power to 115 hp from the standard 95 hp version.

The S2 introduced a full-width veneer wood dash with a lockable glove compartment. The car also got clustered rear taillights.

For the S2, Lotus cast their own block as Ford stopped production of the Ford Cortina 116E. The new 2731E block was virtually identical, but the cylinder-head featured a new stiffening rib between spark plus #2 and #3. Detail upgrades included iron tappet sleeves, stronger 125E connecting rods and a 6-bolt flywheel.

Related: Lotus Race Car List / Lotus Current Lineup / All Lotus Models / Lotus News


Specs & Performance

type Series Production Car
built at England
engine Lotus 2731E Inline-4
position Front, Longitudinal
aspiration Natural
ignition Lucas 25D4 Distributor
block material Cast-Iron w/Aluminum Cylinder Head
valvetrain Chain Driven DOHC, 2 Valves per Cyl
fuel feed 2 Weber DCOE/2 Sidedraft Carburettors
displacement 1588 cc / 96.91 in³
bore 82.6 mm / 3.3 in
stroke 72.8 mm / 2.9 in
power 78.3 kw / 115 bhp @ 6250 rpm
specific output 72.42 bhp per litre
bhp/weight 162.43 bhp per tonne
torque 143.7 nm / 106 ft lbs @ 5000 rpm
redline 6500
body / frame Monocoque Fiberglass Body over Pressed Steel Chassis
driven wheels RWD
wheel type Knock-off Steel Discs
front tires 5.20-13 Dunlop SP 41
rear tires 5.20-13 Dunlop SP 41
front brakes Girling Discs
rear brakes Girling Discs
front wheels F 33.0 x 11.4 cm / 13 x 4.5 in
rear wheels R 33.0 x 11.4 cm / 13 x 4.5 in
steering Triumph Rack & Pinion
f suspension Wishbones w/Coil Springs, Anti-Sway Bar
r suspension Half Shafts w/Lateral Link, Coil Springs, Anti-Sway Bar
curb weight 708 kg / 1560 lbs
weight distro 48 % / 52 %
wheelbase 2133 mm / 84 in
front track 1193 mm / 47 in
rear track 1193 mm / 47 in
length 3683 mm / 145 in
width 1422 mm / 56 in
height 1168 mm / 46 in
transmission Ford 4-Speed Manual
tran clutch 8.5-Inch Dry Plate
gear ratios 2.92:1, 2.51:1, 1.64:1, 1.00:1
fuel capacity 45.42 litres or 12 gal.