TOYOTA YARIS 1.0L 1KR 3 PORT EXHAUST-EGR

Description

The Toyota 1KR-FE is Toyota’s compact 998 cc, 3-cylinder petrol engine used extensively in the Yaris/Vitz and other small Toyota/Daihatsu models. It is a lightweight, naturally aspirated engine designed primarily for fuel economy, low emissions and urban driving.

Toyota’s technical documentation identifies it as a transversely mounted inline 3-cylinder, DOHC 12-valve engine with VVT-i, using a 71.0 × 84.0 mm bore/stroke and 998 cc displacement.

TOYOTA YARIS 1KR-FE 1.0L VVT-i

Engine code: 1KR-FE
Displacement: 998 cc
Capacity: 1.0L
Configuration: Inline 3-cylinder
Installation: Transverse
Bore: 71.0 mm
Stroke: 84.0 mm
Valves: 12
Valves/cylinder: 4
Valvetrain: DOHC
VVT: VVT-i
Compression: 10.5:1 on common early versions; later versions vary
Fuel system: EFI
Aspiration: Naturally aspirated
Turbo: No
Block: Aluminum alloy with cast-in iron liners
Cylinder head: Aluminum alloy
Timing: Timing chain
Ignition: Individual-coil/DIS
Firing order: 1-2-3
Typical power: ~68–69 hp / 51 kW @ 6,000 rpm
Typical torque: ~93–95 Nm, depending on version
Engine weight: approximately 65 kg in a specified configuration.

Toyota’s engine-development documentation describes the 1KR-FE as using an aluminum-alloy block with thin cast-iron cylinder liners, a chain-driven DOHC four-valve-per-cylinder layout and VVT-i.