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ExperimentalExperiment 26286

AURIGA
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Experiment 26286AURIGA · Procella

The storm, assembled by hand.

A 4.0-litre V8 biturbo, a carbon monocoque and a body drawn by the wind. Scroll: every part takes its place before your eyes.

Assemble the engineConfigure

hp at 7,500 rpm
820
Nm peak torque
900
s, 0–100 km/h
2.6
km/h top speed
340

01The engine

A V8 built piece by piece.

Eleven stages, from the cast block to the painted covers. Drag to rotate the engine; hover over a part to see its name.

  1. 01The engine block

    High-pressure cast aluminium, with the banks at 90°. Eight 86 mm bores with plasma-sprayed liners.

    • AlSi7Mg alloy
    • 38 kg
    • 86.0 mm bore

  2. 02The crankshaft

    Forged from a single piece of steel, with its crankpins at 180°: the flat-plane crank lets the engine rev to 8,500 rpm.

    • 86 mm stroke
    • 5 main bearings
    • 6.2 kg flywheel

  3. 03Pistons and conrods

    Forged pistons and titanium conrods, fitted pair by pair; each one slides down its bore onto its crankpin.

    • 9.4:1 compression
    • 150 mm conrods
    • 486 g per pair

  4. 04The cylinder heads

    Thirty-two valves, four per cylinder. The exhaust ports face the inside of the V, giving the gases the shortest possible path to the turbines.

    • Intake Ø 34 mm
    • Exhaust Ø 29 mm
    • Sodium-filled valves

  5. 05The camshafts

    Four camshafts, two per bank, with continuously variable timing on both intake and exhaust.

    • ±40° variation
    • 11.2 mm lift
    • 64 lobes

  6. 06The timing drive

    Two double chains link the crankshaft to the cams. The aluminium cover closes it all; at the front sit the pulleys of the alternator and the compressor.

    • Double chains
    • 220 A alternator
    • Electric air conditioning

  7. 07Dry-sump lubrication

    The oil lives in a separate tank, not under the engine. The sump becomes flat and the engine sits 60 mm lower, taking the centre of gravity with it.

    • 4-stage pump
    • 12 l of oil
    • –60 mm

  8. 08The turbochargers

    Two turbines mounted in the hot V, on ball bearings: they answer the throttle without the usual pause of forced induction.

    • 1.6 bar boost
    • 160,000 rpm
    • Ball bearings

  9. 09The exhaust

    Inconel manifolds, the alloy of jet engines. The colours come from working temperature: straw, bronze and blue appear on their own at 950 °C.

    • Inconel 625
    • 0.9 mm walls
    • –4.2 kg

  10. 10The intake

    Carbon-fibre plenums, short runners and one throttle body per bank. The compressed air passes through an air-to-water intercooler.

    • Prepreg carbon
    • Air-to-water intercooler
    • 2 throttles

  11. 11The covers

    Viola Astra paint with metallic flakes and eight ignition coils. The engine is complete: 3,996 cc, ready to start.

    • Viola Astra
    • 8 coils
    • 3,996 cc
  • 3,996 cc
  • 820 hp at 7,500 rpm
  • 900 Nm at 3,000–6,000 rpm
  • 8,500 rpm red line

02The chassis

The engine finds its place.

An 82 kg carbon-fibre monocoque, aluminium subframes, double-wishbone suspension and carbon-ceramic brakes. The engine lowers in behind the cabin.

  1. 01The carbon monocoque82 kg · 48,000 Nm/° stiffness
  2. 02The subframesvacuum-cast aluminium
  3. 03The suspensiondouble wishbones, adaptive dampers
  4. 04The brakes410 mm carbon-ceramic discs, 10-piston calipers
  5. 05The wheels21 / 22 inch, centre lock
  6. 06Engine and gearbox7-speed dual clutch

03The body

Drawn by the wind.

The carbon panels arrive one by one: the floor and diffuser, the flanks, the doors, the clamshells and the active wing. Finally, the paint and the lights.

  1. 01Floor and diffuser1,100 kg of downforce at 250 km/h
  2. 02The flanksintakes for the intercoolers
  3. 03The doorsdihedral opening
  4. 04The clamshells0.8 mm carbon
  5. 05The active wingfive positions, air brake
  6. 06The paintViola Astra, seven coats

04Performance

The numbers of the storm.

Power rises linearly to 7,500 rpm; peak torque arrives at 3,000 rpm and stays on a plateau 3,000 rpm wide.

0–100 km/h
2.6 s
0–200 km/h
6.9 s
0–300 km/h
18.4 s
Top speed
340 km/h
Dry weight
1,395 kg
Power-to-weight
588 hp/t
Weight distribution
42 / 58 %
Braking 100–0
29 m
Power and torque by engine speed 0150300450600750900 1.0k2.5k4.0k5.5k7.0k8.5k
Power (hp)Torque (Nm)

05Configurator

Yours, in three choices.

Choose the paint, the wheel finish and the caliper colour. Drag to rotate the car.

Paint Viola Astra
Wheels Gloss graphite
Calipers Violet

06The atelier

Made by hand, checked by machines.

Each engine is assembled by a single technician, from block to covers, and carries their signature. Each body goes through 400 hours of work.

The carbon weave, in raking light.
01 The carbon weave, in raking light.
The titanium exhaust, after its first drive.
02 The titanium exhaust, after its first drive.
The cabin stitching, done by hand.
03 The cabin stitching, done by hand.
The caliper and the carbon-ceramic disc.
04 The caliper and the carbon-ceramic disc.

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