Other/engcodes

From AE86 Driving Club FAQ

Toyota engine codes are split into two sections, the bit before the dash, and the bit after it (eg: 2JZ-GTE).

Before the dash. The letters signify the "family" or "series" of the engine. The numbers signify the revision of that engine within its series, usually an alteration in the bore/stroke. Higher numbers don't necessarily mean a larger block. For example, the twin turbo engines in modern Supras are the 1JZ-GTE and 2JZ-GTE. The 1JZ is a 2.5L engine, while the 2JZ is a 3.0L. Both are inline sixes.

After the dash. The letters after the dash indicate the specific features of the engine.

G - Wide angle Twin Cam head, independantly geared camshafts

F - Narrow angle Twin Cam head, common geared camshafts

T - Turbocharged

Z - Supercharged

E - Electronic Fuel Injection system

U - Emission controls (Japanese)

C - Emission controls (Californian)

L - transversely mounted

S - direct injection (eg. new generation 2JZ-FSE)

NOTE: There has been much conjecture over the definition of the G vs F cylinder heads - many saying the G head is the "sports" head defined by its wide valve angle, versus the "economy" F head with its narrow valve angle. With the more modern Toyota engines, such as the 3UZ-FE or 2JZ-FSE, it's pretty clear that the F doesn't really denote an "economy" head design.... ....but rather the F indicates that the two camshafts driven from the one common gear on the timing belt/chain, whereas the G indicates that each camshaft has its own independant gear driven by the timing belt/chain.

Sample Engines And Their Codes These are a few engines that can be found in our members' cars.

4A-GE: .................1.6L DOHC EFI 16V inline four cylinder

4A-GE (20 Valve): ..1.6L DOHC EFI 20V inline four cylinder

4A-GZE: ...............1.6L DOHC EFI 16V supercharged inline four cylinder

7A-FE:..................1.8L DOHC EFI 16V inline four cylinder

1G-GTE:................2.0L DOHC EFI 24V intercooled twin turbo inline six cylinder

1G-GZE:................2.0L DOHC EFI 24V supercharged inline six cylinder

4K-C:....................1.3L OHV Carby 8V inline four cylinder

5M-E:....................2.8L SOHC EFI 12V inline six cylinder

7M-GTE:................3.0L DOHC EFI 24V turbocharged inline six cylinder

18R-C:...................2.0L SOHC Carby 8V inline four cylinder

18R-GEU:..............2.0L DOHC EFI 8V inline four cylinder

3S-GE / 3S-FE: ....2.0L DOHC EFI 16V inline four cylinder

3S-GTE: ...............2.0L DOHC EFI 16V turbocharged inline four cylinder

2T-G: ...................1.6L DOHC 8V inline four cylinder

1UZ-FE: ...............4.0L 4CAM (cos there are 2 heads) 32V V8

Article by: Peter Luong Max Nark

Footnotes: You may see "bastardisations" of these engine codes when people have developed a hybrid engine or added features such as turbochargers that weren't originally there. Some common examples:

4A-GTE: a 4A-GE with a turbocharger fitted

7A-GE: a 7A block (1.8L) with a 4A-GE head

7A-GZE: a 7A block, 4A-GE head and a supercharger

1UZ-FTE: a 1UZ with turbocharger(s) fitted