Ascari KZ1

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Ascari KZ1
Curb weight
1,275 kg (2,811 lb) [1]
Chronology
PredecessorAscari Ecosse
SuccessorAscari A10
Ascari KZ1 rear

The Ascari KZ1 is a sports car made by Ascari Cars. The car is named from the initials of Ascari's owner Klaas Zwart, a wealthy Dutch businessman.

The KZ1 made its worldwide debut at the 2005 Autosport International with a price tag of £235,000. Each car required 340 hours of handcrafting at Ascari's 45,000 square-foot manufacturing facility in Banbury, England by a team of 30 highly skilled craftsmen.[2] Owners also received the opportunity to drive the car at the Ascari-managed Race Resort Ascari in Spain. Production was limited to 50 units.

Specifications

Engine BMW S62 V8 with dry sump lubrication
Position Mid-longitudinal
Aspiration Natural
Valvetrain 4 valves per cylinder with variable valve timing
Displacement 4,941 cc (4.9 L; 301.5 cu in)
Bore 94 mm (3.7 in)
Stroke 89 mm (3.5 in)
Power 500 bhp (373 kW; 507 PS) @ 7000 rpm
Power to displacement ratio 101 hp per litre (75.5 kW/L)
Power to weight ratio 420 bhp per long ton (280 W/kg)
Torque 550 N·m (406 lb·ft) @ 4500 rpm
Transmission 6-speed
Brakes
AP Racing callipers and discs with 6-piston callipers at the front and 4-piston callipers at the rear.[3]
Acceleration 0–60 mph (0–97 km/h) in 3.7 seconds

0–100 mph (0–161 km/h) in 8.0 seconds

1/4 Mile time 11.8 seconds at 124 mph (200 km/h)

Performance

The KZ1 is powered by a highly tuned

E39 M5 and Z8.[4] The car can attain a maximum speed of 201 mph (323 km/h) and can accelerate from 0–60 mph (0–97 km/h) in 3.7s and from 0–100 mph (0–161 km/h) in 8.0s.[5][1]

Ascari KZ1-R

Ascari KZ1-R
Curb weight
1,250 kg (2,756 lb)
Ascari KZ1R GT3
Interior

The Ascari KZ1-R is the racing version of the Ascari KZ1, primarily being featured in the new

spoiler
found on the road car. The headlights have also been modified, with HID bulbs and turn signals, losing the silver, crystallized look of the KZ1. The rear fenders of the car have also been increased slightly to house the larger wheelbase. The wheels are forged aluminium alloy, to further reduce curb weight. The car features a stripped down interior with power windows removed, fine leather replaced by Alcantara, cloth, and carbon fibre racing seats and an integral roll cage, which adds rigidity to the car's body during races. Curb weight is reduced to an astounding 1,250 kg (2,755.8 lb), which is achieved by its carbon fibre chassis tub and a carbon fibre body shell. The KZ1-R retains power steering, a feature that is usually absent from race cars.

Engine

The KZ1-R uses the same mid-mounted, naturally-aspirated, dry sump BMW S62 90-degree V8, but it has been tuned for a total of 520 bhp (388 kW; 527 PS)[7] at 7000 rpm. Displacement stays the same at 4,941 cc (4.9 L; 301.5 cu in), with torque at 550 N⋅m (406 lbf⋅ft) at 4500 rpm. This allows the KZ1-R to achieve a power to weight ratio of 416 bhp (310 kW; 422 PS) per tonne.

Chassis and brakes

The KZ1-R uses a carbon fibre chassis and a tubular steel rear frame. Both front and rear suspension are double-wishbone with coil over dampers, mated to anti-roll bars for stability. The wheels are 19-inch (483 mm) forged aluminium racing wheels mounted to 305/30x19 tires in the rear and 235/35x19 tires in the front. The front brakes are cross-drilled and vented with 6-piston racing-type calipers at the front and four-piston calipers at the rear.

Gear 1 2 3 4 5 6 Final Drive
Ratio 2.875:1 1.773:1 1.267:1 1.000:1 0.833:1 0.621:1 3.70:1

Performance

The KZ1-R can accelerate from 0–62 mph (0–100 km/h) in 3.8 seconds, thanks to its increased

Lamborghini Murcielago LP640
.

Other media

The KZ1 was featured in November 2005 on the BBC television show

Top Gear, where it set the 5th fastest lap time ever recorded on the show at 1 minute 20.7 seconds; currently, the KZ1 holds 26th place, the seventh-fastest time being 1:17.3 set by an Ascari A10
.

References

  1. ^ a b Frankel, Andrew (10 May 2005). "Ascari KZ1, specifications". autocar.uk. Retrieved 11 January 2018.
  2. ^ "Ascari KZ1 reveal". 3 February 2005. Retrieved 11 January 2018.
  3. ^ a b "specifications". Retrieved 11 January 2018.
  4. ^ Tomalin, Peter (September 2022). "Whatever Happened to the Ascari KZ1?". Evo. No. 301. pp. 98–106.
  5. ^ "Ascari". Archived from the original on 19 August 2007. Retrieved 21 May 2007.
  6. ^ Ascari KZ1-R Data
  7. ^ "Ascari KZ1-R". Archived from the original on 1 November 2010. Retrieved 25 October 2010.

External links