The Sport Quattro is a special limited production automobile
which Audi produced to meet the homogulation requirements of Group B rallying.
It is a 2-door coupe with an all aluminum 20 valve turbocharged/intercooled
engine mated to the 'quattro' 4 wheel drive drivetrain. It loosely resembles
the original quattro or ur-quattro, but that is about all these cars have in common.
The primary distinguishing feature is the car is much
shorter than the normal quattro coupe. The wheel base is shortened by 320mm,
with the overall length being reduced by 240mm.
The wheelbase was shortened for three reasons: to lose weight,
to improve weight distribution and to reduce the polar moment of inertia.
A less noticabel feature are the angles of the windshield and roofline.
On the sport quattro, the front end and doors from the 4000 sedan are
used which places the windshield in a more upright position.
The difference in this angle is only 2 degrees, but quite noticable.
Almost all the body panels are custom made for the sport quattro with
the exception of the metal doors(4000 sedan) and the Kevlar trunk lid(quattro coupe).
The hood is made from fiberglass and the roof, fenders, bumpers
and front and rear aprons are made of a Kevlar-GRP composite.
The sport quattro marked the introduction of Audi's 20-valve
turbocharged engine into a road- going car.
It has a bore of 79.3mm and a stroke of 86.4mm yielding a displacement of 2133cc.
It used a compression ratio of 8.0:1. The intake valves have a diameter of 32mm and the exhaust valves are sized at 28mm.
A large KKK-K27 turbocharger with a maximum boost pressure of 17.4 psi is used.
The engine management is the Bosch LH motronic all-electronic fuel injection along with Bosch digital electronic ignition.
The street engine produced 306 bhp at 6700 rpm and had a maximum torque is 2 46 lb-ft at 3700 rpm.
[B]There were 214 cars produced between February 1984 and January 1986[/B] which satisfied the motorsport homogulation requirements
(a minimum of 200 units for Group B).
Chassis numbers has the prefix SQ and ran
from SQ85EA905001 to SQ85EA905214.
Of the 214 produced, 164 were sold to customers,
19 were experimental and never left the factory, 20 were allocated to the motorsport department, 5 were used as spare parts and the remaining 6 are presumed to remain within the company.
The 5 spare parts cars were rebuilt in 1988 and sold to customers.
