Science Fair Project Encyclopedia
Toyota K engine
The Toyota K series was a straight-4 engine produced from 1966 through 1998. It was a 2-valve pushrod engine design, a rarity for the company.
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K
The 2-valve OHV 1.1 L (1077 cc) K was produced from 1966 through 1969. A similar K-B was produced from 1968 through 1969.
2K
The 2-valve OHV 1.0 L (993 cc) 2K was produced from 1969 through 1988. Output in 1984 was 45 hp (34 kW) at 5600 RPM and 49 ft·lbf (66 N·m) at 4000 RPM.
3K
The 2-valve OHV 1.2 L (1166 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.
4K
The 1.3 L (1290 cc) 4K was produced from 1978 through 1989. Cylinder bore was 75 mm (2.95 in) and stroke was 73 mm (2.87 in). It was a 2-valve OHV engine.
In 1980, the 4K produced 60 hp (45 kW) at RPM. From 1982 through 1984, output was 65 hp (48 kW) at 5600 RPM and 72 ft·lbf (97 N·m) at 3600 RPM.
The 1981 and 1982 California-spec 4K-C produced 58 hp (43 kW) at 5200 RPM and 67 ft.lbf (90 Nm) at 3600 RPM. Torque was up to 74 ft·lbf (100 N·m) at 3400 RPM for the fuel injected 1982 through 1984 4K-E. The Japan-spec 4K-U produced 74 hp (55 kW) at 5600 RPM and 78 ft·lbf (105 N·m) at 3600 RPM in 1982.
5K
The 1.5 L (1496 cc) 5K was produced from 1983 through 1989.
7K
The 1.8 L (1781 cc) 7K was produced in 1998. Cylinder bore was 80.5 mm (3.17 in) and stroke was 87.5 mm (3.44 in). Output was 76 hp (57 kW) at 4600 RPM and 103 ft·lbf (139 N·m) at 2800 RPM.
See also
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