1991 Lotus Esprit X180R


1991 Lotus Esprit X180R

In 1990 Lotus needed a race prgram to promote the Esprit in the US market. To do this they upgraded an Esprit SE to race in the SCCA series. The new car, strictly race prepared, was called the Type 105

Externally, the car featured plexiglass windows with newly designed rear wings and front spoilers. Mechanically, the car had new AP Racing disc brakes, new suspension geometery and new engine management. The car produced 285 horsepower from the Lotus 910S powerplant. Such horsepower was realized thanks to the use of Lotus/Omega fuel injection.

The type 105 SCCA car encouraged Lotus to make a new road-going Supercar. Thus the X180R was born. It was based on the the Type 105 having 285 hp. Twenty of these replicas were produced and sold as race-ready, road-going cars. They had airconditioning, dual sports seats and chassis galvanisation (which was missing on the racecars).

1991 Lotus Esprit X180R

In 1991, Lotus made three racecars to enter the SCCA World Challenge. These cars benfited heavily from the 1990 race season. These cars adopted the road-going name X180R despite changing to the Type 106 designation.

The 1991 X190R featured more horsepower, larger wheels and a revised roll-cage. The cage helped the car achieve a twenty percent increase in torsional rigidity. It did this by absorbing some of the front and rear loads.

The high state of tune allowed the engine to produce over 300 horsepower. Such power was realized by utilizing larger fuel injectors, inhanced charge-cooling and a non-catalyst exhaust system.

With all the modifictions combined, the X190Rhad 36 more horsepower and was 300 lbs lighter than the Esprit SE.

The racing season for the X190R lasted three years. From 1991 to 1993 the car was raced with Doc Bundy taking a class championship win in 1992.

1991 Lotus Esprit X180R

In Detail

submitted byRichard Owen
engine910S Inline-4
positionMidship
aspirationGarrett TB03 Turbochargers
valvetrainDOHC, 4 Valves per Cyl
displacement2174 cc / 132.7 in³
bore95.3 mm / 3.75 in
stroke72.4 mm / 2.85 in
power223.7 kw / 300 bhp @ 6800 rpm
specific output137.99 bhp per litre
bhp/weight290.7 bhp per tonne
torque420.3 nm / 310.0 ft lbs @ 4800 rpm
body / frameGRP Plastic over Steel Backbone
driven wheelsRWD
front tires245-14×16
rear tires315-40×17
front brakesAP Vented Discs w/4-Pot Calipers
f brake sizex 330 mm / x 13.0 in
rear brakesAP Vented Discs w/4-Pot Calipers
r brake sizex 279 mm / x 11.0 in
front wheelsF 40.6 x 21.6 cm / 16.0 x 8.5 in
rear wheelsR 43.2 x 26.7 cm / 17.0 x 10.5 in
steeringUnassited Rack & Pinion
f suspensionDouble Wishbones w/Coil Springs, Munroe Dampers
r suspensionHalf Shafts w/Lower Wishbones, Transverse Link, Coil Springs, Munroe Dampers
curb weight1032 kg / 2275 lbs
wheelbase2438 mm / 96.0 in
front track1537 mm / 60.5 in
rear track1575 mm / 62.0 in
length4267 mm / 168.0 in
width1905 mm / 75.0 in
height1854 mm / 73.0 in
gear ratios:1
0 – 60 mph~4.1 seconds
0 – 100 mph~11.0 seconds