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.)
K
1966 Toyota K engine
The 8-valve OHV1.1L (1,077cc)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 73PS (54kW; 72hp) at 6600rpm.[1] The Publica SL received this more powerful version.
The eight-valve OHV1.0L (993cc)2K was produced from 1969 through 1988. The cylinder bore and stroke was 72mm ×61mm (2.83in ×2.40in).
Output in 1978 was 35kW; 48PS (47hp) at 5800rpm, and 66N⋅m; 48lbf⋅ft (6.7kg⋅m) at 3800rpm.[2] In 1983, New Zealand received a version with 40kW (54PS; 54hp) at 5800rpm, while Europe received a version with 33kW (45PS; 44hp) at 5600rpm, both with a maximum torque of 66N⋅m; 48lbf⋅ft (6.7kg⋅m) at 4000rpm.
Japanese emission controls (TTC-C) ("Toyota Total Clean-Catalyst")
3K-R
183
135
180
9000
19.6
192
142
8200
13.0:1
TRD Racing circuit engine
3K-R
The 3K-R engine, also known as the 137E, was a special version of the standard 3K fitted to the Toyota Starlet (KP40) for use in touring car racing in Japan. The engine was developed by TOM’S in 1974 and was one of their first major developments as a tuner for Toyota. [6] The 3K-R has a 16 valve dual overhead camshaft cylinder head with a compression of 13:1 and was fuelled by a Nippon Denso built mechanical fuel injection system. The engine was also bored out to 1.3 L (1293 cc) and had a dry sump oil system. The engine produced 134kW (180hp) at 9000 rpm.[7]
4K
4K-U engine
The 1.3L (1,290cc)4K was produced from 1977 through 1989. Cylinder bore and stroke was 75mm ×73mm (2.95in ×2.87in). It was an 8-valve OHV engine.
In 1980, the 4K produced 43kW; 59PS (58hp) at 5250rpm. From 1983 through 1984, output was 46kW; 63PS (62hp) at 5600rpm and 97N⋅m; 72lbf⋅ft (9.9kg⋅m) at 3600rpm.
The 1981 and 1982 California-spec 4K-C produced 43kW; 59PS (58hp) at 5200rpm and 90N⋅m; 67lbf⋅ft (9.2kg⋅m) at 3600rpm. Torque was up to 100N⋅m; 74lbf⋅ft (10.2kg⋅m) at 3400rpm for the fuel injected 1982 through 1984 4K-E. The Japan-spec 4K-U produced 55kW; 75PS (74hp) at 5600rpm and 105N⋅m; 77lbf⋅ft (10.7kg⋅m) at 3600rpm in 1982. Available in hydraulic and solid lifter configurations
Toyota 5K-C engine in a 1991 Liteace5K engine in a 1993 Toyota Kijang
The 1.5L (1,486cc)5K was produced from 1983 through 1996. Typical output is 55kW (74hp; 75PS) at 5600rpm. Bore and stroke is 80.5mm ×73mm (3.17in ×2.87in). It was available with either 4- or 5-speed manual transmissions. Like the smaller 4K model, it uses hydraulic lifters as well as solid lifters for the pushrod.[clarification needed]
The 1.8L (1,781cc)7K was first introduced in 1983. Cylinder bore and stroke was 80.5mm ×87.5mm (3.17in ×3.44in). Output was 60kW; 81PS (80hp) at 4600rpm and 139N⋅m; 103lbf⋅ft (14.2kg⋅m) at 2800rpm while the EFI version which can be found in Toyota Kijang KF80 produces 62kW; 84PS (83hp) at 4600rpm and 147N⋅m; 108lbf⋅ft (15kg⋅m) at 3200rpm. The Engine was available with a 5 speed manual & 4 speed automatic transmission. Available in both fuel injected and carburetted configurations, the 7K produces much more power and torque compared to the other K engines however it is a lot less 'rev happy' due to having such a long stroke.
7K-E is available in KR42 Townace SBV vans (1997–2007) using a large G52 5 speed gearbox (same bellhousing to box pattern as W55), or automatic.
↑ 2代目 パブリカ[Second generation Publica]. トヨタ自動車75年史 [75 years of Toyota history] (in Japanese). Toyota Motor Co.
↑ Tekniikan Maailma Magazine (in Finnish) (#15). 1978.{{cite journal}}: Missing or empty |title= (help)
↑ Toyota Corolla 1200(PDF) (brochure) (in German), Germany: Toyota Deutschland, February 1973, p.6, archived from the original(PDF) on 22 December 2022
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