Zytek ZJ458 (2007)
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Specifications

Zytek ZJ458, 4 stroke, petrol/ethanol E10 engine
Introduced in 2007
4496cc
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Dimensions

Cylinders arrangement: V8 (90o)
Strokes: 4
Bore x Stroke:
Capacity: 4496 cc
Compression ratio:

Construction materials

aluminium alloy block
cylinder head: aluminium alloy
forged steel crankshaft with 5 main bearings
steel connecting rod

Cylinder-head

crossflow design
DOHC
4 valves per cylinder - 32 valves total

Aspiration

╬Łatural with Zytek multipoint electronic Fuel Injection, inlet restrictors depending group regulations

Ignition

ECU
Zytek EMS 4.5.2 engine management
Firing order, 1-8-3-6-4-5-2-7

Cooling and lubrication

water cooled
dry sump

Torque values

Models used and Output

Year Model Induction Compression ratio Power Torque
2007 Zytek 07S MPFI 473.5 kw / 635 bhp 583.0 nm / 430 ft lbs
2009 Zytek 09S MPFI 473.5 kw / 635 bhp 583.0 nm / 430 ft lbs
2011 Zytek 09S Hybrid MPFI 473.5 kw / 635 bhp 583.0 nm / 430 ft lbs
ZJ458-engine.jpg Source
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