top of the exhaust camshaft instead of the intake. Other differences include the first time that there is no oil cooler in this generation as well as OBD2 diagnostics. Despite the downsize in various components of this generation, power is retained at and . Specifications 503E The 503E was used to power a number of Toyota Sports cars, including the Toyota 88C Group C entry and the All American Racers-built Eagle HF89/HF90 and Eagle MkIII IMSA Grand Touring Prototypes. It was hand-built by Toyota Racing Development in Torrance, California and produced up to . The 3S-GTE was later based on its design. They are similar engines, though not identical. The Toyota TOM'S Supra GT500 race car used a version of the 3S-GTE known as the 3S-GT, another name for the 503E which was detuned to , in accordance to the regulations of GT500 at the time. This was due to the Supra's conventional engine, the 2JZ, being deemed as too front-heavy for the race car. 4S The 4S is a , a narrower bore version of the 3S (82.5 x 86.0 mm). This was essentially a multi-valve, twin cam replacement for the 1.8-litre 1S series, with parallel differences as those between the 2S and 3S. There were both 4S-Fi (central point fuel injection) and 4S-FE (multi-point fuel injection) versions. 4S-Fi and , central-point fuel injection. Applications 1988–1989 Toyota Carina ED (ST163) 1989–1990 Toyota Carina ED (ST180/181) 1988–1992 Toyota Camry (SV22) 1988-1990 Toyota Cresta (SX80) 1988-1990 Toyota Mark II (SX80) 1988-1990 Toyota Chaser (SX80) 4S-FE Applications 1990–1993 Toyota Carina ED (ST180/181) 1993–1998 Toyota Carina ED (ST200/201) 1991-2001 Toyota Cresta (SX80/SX90/SX100) 1991-2001 Toyota Mark II (SX80/SX90/SX100) 1991-2001 Toyota Chaser (SX80/SX90/SX100) 1996–2001 Toyota Comfort (SXS11Y) 1997–2001 Toyota Chaser (SX100) 5S The 5S engine was essentially the same basic design as the 3S, but features a slightly increased bore and an increased stroke (87.1 x 90.9 mm). The total displacement was thus increased to . It was used in the fifth- and sixth-generation Celica, the second-generation MR2, the third- and fourth-generation Camry, as well as the first-generation Camry Solara. Like the 3S, the 5S is of a non-interference design to prevent the pistons from striking the valves in case of a timing belt failure. 5S-FE The 5S-FE was available in several variations each being distinguished by valve cover design. The first generation, introduced in the 1990–92 Celica GT/GT-S and MR2, had a power rating