Toyota K engine

The Toyota K series was a straight-4 engine produced from 1966 through 2007. It was a two-valve pushrod engine design, a rarity for the company. 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.)

The 8-valve OHV 1.1 L (1,077 cc) K was produced from 1966 through 1969. A similar K-B was produced from 1968 through 1969, the -B designates twin carburettors. Thus equipped, the engine produces 73 PS (54 kW) at 6,600 rpm. The Publica SL received this more powerful version.

Applications:

The eight-valve OHV 1.0 L (993 cc) 2K was produced from 1969 through 1988. The cylinder bore was 72 mm and stroke was 61 mm.

Output in 1978 was 47 hp (35 kW) at 5,800 rpm, and 66 N·m at 3,800 rpm. In 1983, New Zealand received a version with 40 kW (54 hp) at 5,800 rpm, while Europe received a version with 33 kW (45 hp) at 5,600 rpm, both with a maximum torque of 66 N·m at 4,000 rpm.

Applications:

The eight-valve overhead valve 1.2 L (1,166 cc) 3K was produced from 1969 through 1977. Cylinder bore was 75 mm (2.95 in) and stroke was 66 mm (2.6 in).

The 1969 through 1975 3K-B was a twin-carb version. The California-spec 3K-C (1977–1979) and 3K-H were other available versions.

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