Toyota K engine

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Toyota K engine
4K engine in a Corolla DX
Overview
Manufacturer	Toyota
Production	1966–2007
Layout
Configuration	Naturally aspirated straight-four
Cylinder block material	Cast iron
Cylinder head material	Aluminium alloy
Valvetrain	OHV 2 valves per cylinder
Valvetrain drive system	Timing chain
Combustion
Fuel system	Carburettor Multi-port fuel injection
Fuel type	Petrol
Oil system	Wet sump
Cooling system	Water-cooled
Output
Power output	45–83 PS (33–61 kW; 44–82 hp)
Torque output	66–147 N⋅m (7–15 kg⋅m; 49–108 lb⋅ft)
Chronology
Successor	Toyota E engine (up to 1.3 L models)

The Toyota K series is an inline-four engine that was produced from 1966 through 2007. It is a two-valve pushrod engine design. It was originally built from the Toyota Kamigo plant in Toyota City factory in Japan.

All K series are non-crossflow engines – the inlet and exhaust manifolds are on the same side. They have cast iron blocks and aluminium alloy heads, with a crankshaft supported by five main bearings. K series motors have both hydraulic tappet or hydraulic valve lifters, solid lifters and 1.5 ratio rockers with an adjustment thread for tappet clearance. 7K engines were released with only the hydraulic valve lifters from factory, whereas 4K and 5K engines were made with both hydraulic and solid lifters (depending on year and which model vehicle.)