The Dynamic Force engine series introduced a partially different naming scheme. Case in point, both the 2GR-FKS and 8AR-FTS engines have an electronic multi-point fuel injection, but the 'E' suffix is not included in the code.

This is particular when newer engine technologies are introduced. Starting in 2015, the designations after the dash have a maximum combination of three letters, even though there are more suffixes applicable.Confusion is easiest to avoid when using the dash to separate between the engine series and its own characteristics: for instance, 1MZ-FE rather than 1M-ZFE. 1MZ-FE – This is not a supercharged, narrow angle, fuel injected M-series engine, but a narrow angle, fuel injected MZ-series engine. In 1987, Toyota began assigning dual letter engine codes to some of the 'engine family' categories in some engine lines, particularly six-cylinder models.Before that, twin cams had received separate numerical codes. The use of 'G' to denote twin cam engines was decided on in 1971, with the renaming of the 10R into 8R-G. V – D-4D common rail direct injection (diesel).1KD – First model in the KD engine family.A - Valvematic variable lift intake head.3ZR - Third model in the ZR engine family.2UR – Second model in the UR engine family.3S – Third model in the S engine family.

2NR – Second model in the NR engine family.For example, Lotus added a supercharger to the 2ZZ-GE in some versions of the Lotus Elise and Exige but it is still labelled 2ZZ-GE, not 2ZZ-GZE. Note: Other manufacturers may modify the engine after it has left the Toyota factory but the engine still keeps the original Toyota designation. With Catalytic converter Japan-spec emissionsĭ-4D Common rail direct injection system (diesel) or Toyota engines manufactured by Daihatsu with VVT-i (e.g., 1NR-VE) Low Compression (For 87 and below octane fuel) On-demand Atkinson cycle in non-hybrid engines Twin downdraft carburetors or Toyota engines manufactured by Daihatsu without VVT-i (e.g., 1KR-DE)Īutochoke (Early models) or pollution control for commercial cars in Japan Ĭarbureted / California Emissions Controlled The suffix (separated by a dash) specifies the features of the engine:īefore 2000 indicates twin SU-style side-draft carburetorsĪfter 2000 indicates E85 Ethanol fuel.The next one or two letters specify the engine family.The first numeric characters specify the engine block's model (usually differed by displacement).The company follows a naming system for their engines: Toyota has produced a wide variety of automobile engines, including four-cylinder and V6 engines.

Toyota d4 engine wikipedia