produced from 1979 through 1989. The 3A engine is the successor of Toyota's first A engine, the 1A. All variants were belt-driven eight-valve counter-flow SOHC engines but no longer used Toyota's "Turbulence Generating Pot" pre-combustion system from the 1A. 3A, 3A-C Output: at 5,600 rpm and at 3,800 rpm (compression at 9.0:1, European spec) at 4,500 rpm (N. America, AL-21 3 door liftback) at 4,800 rpm (N. America, AL-25 5-door wagon) Applications: AL12 Tercel 1979–1982 (excluding Japan) AL21/25 Tercel 1982–1988 (excluding Japan) 3A-U, 3A-LU Using Toyota TTC-C catalytic converter. On some models marked as 3A-II. Output: at 5,600 rpm and at 3,600 rpm (compression at 9.0:1) Applications: AA60 Carina 1981–1987 (Japan only) AT150 Carina 1984–1988 (Japan only) AE70 Corolla 1979–1983 (Japan only) AE81/85 Corolla 1983–1987 (Japan only) AL21 Corolla II 1982–1986 (Japan only) AT140 Corona 1982–1987 (Japan only) AT150 Corona 1983–1987 (Japan only) AL12 Corsa (Japan only) AL21/25 Corsa 1982–1989 (Japan only) AW10 MR2 1984–1989 (Japan only) AE70 Sprinter 1979–1983 (Japan only) AE81/85 Sprinter 1983–1987 (Japan only) AL25 Sprinter Carib 1982–1988 (Japan only) AL21/25 Tercel 1982–1989 (Japan only) 3A-HU High compression version with Toyota TTC-C catalytic converter. Output: at 6,000 rpm and at 4,000 rpm (compression at 9.3:1) Applications: AL21 Corolla II 1982–1984 (Japan only) AL21 Corsa 1982–1984 (Japan only) AL21 Tercel 1982–1984 (Japan only) 3A-SU Twin carburetted swirl-intake version with Toyota TTC-C catalytic converter, introduced in August 1984 along with a facelift for the Tercel (and its sister variants) in Japan. Features two variable-venturi carburetors, which Toyota wanted to test in Japan before launching them in export along E series engine, albeit in single carburetted version. Because of the swirl-intake, the sealing surface between cylinder head and valve cover is different from other SOHC A-engines, featuring vertical curves on the manifold side of the head. Thus, those parts are not interchangeable between each other. The swirl was supposed to improve burning of the air-fuel mixture, thus enabling cleaner emissions, improving fuel economy, and increasing power. Output: at 6,000 rpm (compression at 9.3:1) Applications: AL21 Corolla II 1984–1986 (Japan only) AL21/25 Corsa 1984–1989 (Japan only) AL25 Sprinter Carib 1984–1988 (Japan only) AL21/25 Tercel 1984–1989 (Japan only) 4A The 4A was produced from 1980 through 2002. All 4A engines have a displacement of . The cylinder bore was enlarged from the previous 3A engines at , but the stroke remained the same as the 3A at , giving it an over-square