Toyota S engine

Toyota S engine
Overview
Manufacturer	Toyota Motor Corporation
Production	1980–2007
Combustion chamber
Configuration	Inline-four engine
Chronology
Successor	Toyota AZ engine Toyota AR engine

The Toyota S Series engines are a family of straight-4 engines with displacement from 1.8 L to 2.2 L produced by Toyota Motor Corporation from January 1980 to August 2007. The series has cast iron engine blocks and alloy cylinder heads.

The 1.8 L (1,832 cc) 1S is the first version of the S-series engine. It is a member of Toyota's Lasre engine family (Lightweight Advanced Super Response Engine). Bore and stroke are 80.5 x 90.0 mm. The engine was first seen in 1981, and was fitted to a wide range of Toyotas, in both RWD and FWD applications.

Original 1S engine, designed for longitudinal, rear-wheel-drive applications. Designated 1S-U with Japanese emissions controls.

Adaption of the 1S engine, designed for transverse, front-wheel-drive applications. Designated 1S-LU with Japanese emissions controls.

Adaption of the 1S-L engine, with added central injection (Ci). Designated 1S-iLU with Japanese emissions controls.

Later versions renamed 1S-i. Sometimes labelled 1S-Ci in marketing material.

Adaption of the 1S-L engine, with added multiport fuel injection. Designated 1S-ELU with Japanese emissions controls.

Later versions renamed 1S-E.

The 2S is a 2.0 L (1,995 cc) four-cylinder engine with an iron block and an alloy head. Bore and stroke are 84.0 x 90.0 mm. This was to be the last of the S engine family not to be equipped with twincams.

The 2S-E is the same as the 2S except it uses EFI. This particular engine was used in the Camry and in the Celica ST161. It was fitted with hydraulic lash adjusters.

The 2S-EL, 2S-ELU and 2S-ELC are the same as the 2S-E except they are transversely mounted (as fitted to the V10 Camry). The 2S-ELU has Japanese emission controls and the 2S-ELC has US emission controls.

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