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Toyota engines and gearboxes

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Engine codes.
Engine specs.
Crossmembers.
Gearboxes.

Engine codes.

Most of these codes came from Matti's site.
Toyota uses the same option codes across most of its engines.

The first letter is the engine family (T or R for 1970-1977 Celicas).
The numbers before the first letter is the version number of the engine
(i.e. version 1, version 2, ... , version 18 ...).
After the dash we have the options as follows:

B	Dual standard carbs (only used on non-twin cam engines, obsolete code)
C	Californian pollution control (also most of the world)
D	Uses leaded fuel (Super) when base engine uses regular
E	Electronic Fuel Injection
F	Twin Cam (economy)
G	Twin Cam (sports) with multiple sidedraft carbs (unless EFI)
H	Unknown but never combined with -B or -C
i	Single point fuel injection
II	Unknown - possibly denotes L.A.S.R.E
J	Unknown, possibly autochoke, possibly another anti-pollution control
L	Transverse mounted engine (only used around 1985 when transverse was new)
LPG	LPG fuel
M	Phillipines market (details unknown)
P	LPG fuel
R	Low compression for regular (not super or premium) fuel.
S	Swirl intake ports (only a few made in mid '80s)
S	Direct injection & swirl pot pistons (starting from '97/98)
T	Turbocharged
U	Japanese pollution control (introduction of "U"nleaded?). Engine uses TTC-C, TTC-L or TTC-V.
Z	Supercharged

So ...

18R-C	is an 2000cc R series engine, 18th version, with Californian emmisions control
18R-GUE	is a 2000cc R series engine, 18th version, with twin cam head, Japanese emmisions control and EFI
3T-GTE	is a 1800cc T series engine, 3rd version, with twin cam head, turbo and EFI
2T	is a 1600cc T series engine, 2nd version, with no special options
12T-U	is a 1600cc T series engine, with TTC-C pollution control
13T-U	is a 1800cc T series engine, with TTC-L pollution control

Engine specs

Capacity = Bore² x pi x Stroke x Cylinders _{/ 4000}
Eg for 18R
88.5mm x 88.5mm x 3.14159 x 80.0mm x 4 _{/ 4000} = 1968cc

Series	Type	Size	Bore x Stroke, Pitch	Years	Comments
1A	I4	1500cc
2A	I4	1300cc
3A	I4	1452cc	77.5 x 77.0mm
4A	I4	1587cc	81.0 x 77.0mm
5A	I4	1498cc	78.7 x 77.0mm	1992-1999
7A	I4	1762cc	81.0 x 85.5mm	1992-1999
B	I6	3386cc	84.1 x 101.6mm
B	I6 diesel	2977cc		-1977
2B	I6 diesel	3168cc
1C	I4 diesel	1839cc	83.0 x 85.0mm
2C	I4 diesel	1974cc	86.0 x 85.0mm
2D	I6 diesel	6494cc
F	I6	3878cc	90.0 x 101.6mm	1955-1975
2F	I6	4230cc		1975-
1G	I6	1988cc	75.0 x 75.0mm
H	I6	3576cc		1972-
2J		2481cc		-1972
K	I4	1100cc	75.0 x 61.0mm
2K	I4		72.0 x ?mm
3K	I4	1166cc	75.0 x 66.0mm
4K	I4	1290cc	75.0 x 73.0mm
5K	I4	1486cc	80.5 x 73.0mm
7K	I4	1800cc
L	I4 diesel
2L	I4 diesel	2446cc	92.0 x 92.0mm
M	I6	1988cc	75.0 x 75.0mm	1967-1983	turbocharger option in 1982-1983
2M	I6	2253cc	75.0 x 85.0mm
3M	I6	1988cc	75.0 x 75.0mm		Twincam version of M
4M	I6	2563cc	80.0 x 85.0mm	1971-1980
5M	I6	2759cc	83.0 x 85.0mm	1981-
6M	I6	2954cc	83.0 x 91.0mm	1984-
7M	I6	2954cc	83.0 x 91.0mm	1986-
P	I4	977cc	68.93 x 65.45mm
2P	I4	1198cc	76.6 x 65.0mm
3P	I4	1345cc	76.6 x 73.0mm
4P	I4	1345cc	76.6 x 73.0mm
R	I4	1453cc	77.0 x 78.0mm
2R	I4	1490cc	78.0 x 78.0mm
3R	I4	1896cc	87.8 x 78.0mm		Pushrod, OHV, 3 bearings
4R	I4	1587cc	80.5 x 78.0mm	1966-1971	Pushrod. Always seems to have dual carbs
5R	I4	1994cc	88.0 x 82.0mm		Pushrod, OHV, 3 bearings
6R	I4	1707cc	86.0 x 73.5mm		SOHC
7R	I4	1591cc	86.0 x 68.5mm		SOHC
8R	I4	1858cc	86.0 x 80.0mm		SOHC, DOHC
9R	I4	1587cc	80.5 x 78.0mm		Twincam version of 4R
10R	I4	1858cc	86.0 x 80mm	1969-1971	Twincam version of 8R, introduced in Sept 1969, renamed to 8R-G in Feb 1971
12R	I4	1587cc	80.5 x 78.0mm	1971-1982	Pushrod. Replaced 4R
16R	I4	1808cc	88.5 x 73.5mm	1973-1979
18R	I4	1968cc	88.5 x 80.0, 138mm	1972-1982	SOHC, DOHC, 5 bearings
19R	I4	1968cc	88.5 x 80.0mm	1974-1977
20R	I4	2189cc	88.5 x 89.0mm	1972-1980	Shares many parts with 21R and 22R
21R	I4	1972cc	84.0 x 89.0mm
22R	I4	2366cc	92.0 x 89.0mm	1981-1995	Use with 20R head for increased compression ratio
1S	I4	1832cc	80.5 x 90.0mm
2S	I4	1995cc	84.0 x 90.0mm
3S	I4	1998cc	84.2 x 90.1mm
4S	I4	1838cc	82.5 x 86.0mm
5S	I4	2163cc	87.0 x 91.0mm	1995-1999
T	I4	1407cc	80.0 x 70.0mm
2T	I4	1588cc	85.0 x 70.0mm		2T-U uses TTC-C
3T	I4	1770cc	85.0 x 78.0mm
4T(road)	I4	1791cc			200 road units to homologate the race version
4T (race)	I4	2090cc	89.0 x 84.0mm		20 Gr.B racing units, all with KKK turbos
12T	I4	1588cc	85.0 x 70.0mm		same as 2T with different anti pollution controls
13T	I4	1770cc	85.0 x 78.0mm		same as 3T with different anti pollution controls
V	V8	2599cc	78.0 x 68.0mm	196x-?	Only in the Crown V8 and Century
5V	V8	3994cc	87.0 x 84.0mm	1995-1997	Only in the Century. Replaced by the V12 1GZ
1X	I4	1892cc			Starfire engine from GM-Holden Australia for use in the Corona XT130
Y	I4	1600cc
2Y	I4	1812cc	86.0 x 78.0mm
3Y	I4	2000cc
4Y	I4
1FZ	I6	4163cc	94.0 x 100.0mm	1992-1998
1GZ	V12	4996cc	81.0 x 80.8mm	1998-
1JZ	I6	2492cc	86.0 x 71.5mm	1992-1999
2JZ	I6	2997cc	86.0 x 86.0mm	1992-1999
1MZ	V6	4996cc	87.5 x 83.8mm	1995-1999
2MZ	V6	2496cc	87.5 x 69.2mm	1998-1999
3RZ	I4	2693cc	95.0 x 95.0mm	1998-1999
1UZ	V8	3968cc	87.5 x 82.5, 105.5mm	1992-1999	Alloy block, quad cam V8 for LS400, SC400 and Crown
2UZ	V8	4664cc	94.0 x 84.0mm	1998-	Iron block, quad cam V8 for the Landcruiser
3UZ	V8	4292cc	91.0 x 82.5		Alloy block, quad cam V8 for LS430, SC430 and Crown
3VZ	V6	2958cc	87.5 x 82.0mm	1992-1996
4VZ	V6	2496cc	87.5 x 69.2mm	1992-1996
5VZ	V6	3378cc	93.5 x 82.0mm	1998-1999

Note: pitch is the distance between bore centres.

Cross members

A	Distance between chassis-crossmember front bolts
B	Distance between chassis-crossmember rear bolts
C	Distance between front and rear chassis-crossmember bolts
D	Distance between centres of top strut bearings
E	Distance between lower arm pivot points
F	Length of lower arms
K	Distance between bolts on steering knuckle

Note, spring height depends on so many things and is so hard to measure that I have left it out.

Car	A	B	C	D	E	F	K
Carina A10/11/12/15/16 Celica A20/21/22/25/27	726.6mm	705mm	114mm	970.8mm
Carina A17/18/3#/4# Celica A23/24/28/29/35/4#	751mm	733mm	114mm	1015mm	588mm	290mm	95mm
Supra 4#	740mm	725mm
Celica A6#	755mm	755mm	85mm		670mm	290mm	105mm
Corolla E3# (and E5# ?	718mm	718mm	125mm
Corolla E7#	775mm	755mm
Corona T13#	751mm	733mm	114mm				95mm
Corona T14#							105mm
Cressida X6#							95mm

Gearboxes

K40	alloy	4 speed manual, usually behind K engines
K50	alloy	5 speed manual, usually behind K engines
T40	alloy	4 speed manual, usually behind T engines
T50	alloy	5 speed manual, usually behind T engines. Major internal revision part way through Corolla AE70.
W40	steel	4 speed manual, usually behind R and M engines
W42	?	4 speed manual
W45	alloy	4 speed manual, behind Rand T engines
W50	steel	5 speed manual, usually behind R, M and early 1G engines
W51	steel	5 speed manual, usually behind later R and M engines
W52	?	5 speed manual
W55	alloy	5 speed manual, behind R and turbo T engines
W56	alloy	5 speed manual
W57	alloy	5 speed manual, behind G engines (Supra, Cressida)
W58	alloy	5 speed manual, behind M engines (Supra, Cressida)
P51	steel	5 speed manual, close ratio box usually behind 18R-G engines Uses Porsche style syncromesh
A30	?	3 speed auto, until August 1973
A40	?	3 speed auto, after August 1973
A40D	?	4 speed auto
L40 L45		4 speed manual, usually behind K, R and L engines in 4WD and cargo vehicles
L50 L52	?	5 speed manual, usually behind K, R and L engines in 4WD and cargo vehicles
H42		4 speed manual, land cruiser
G52		5 speed manual, in pickup and 4Runner
A1xx	?	FWD auto
A1xxF	?	4WD auto
A2xx	?	FWD auto

The same gearbox can have different length rear extensions in different cars.
The same gearbox can have different bellhousings in different cars.
However, the central part can still be swapped.
Exception is late AE70 T50 rear extension will not fit earlier T50 core.

Every entry in the above table requires a unique bellhousing.
The A40 column includes the A20/A30/A40/A40D .
The W50 column includes the W40/W42/W50/W52/P51 .
The W55 column includes the W45/W55/W56/W57/W58 .
The T50 column includes the T40/T50 .
The T and G series engines have different bellhousings (clutch cylinder on other side) but are otherwise interchangeable.

W series gearboxes have a separate bellhousing.
Different bellhousings are used to connect a W50 gearbox to an R or M series engine.
Different bellhousings are used to connect a W55 gearbox to an R or T series engine.
Alloy W5# gearboxes are interchangeable with each other.
Alloy and steel W5# gearboxes are not interchangeable with each other.
W50 bellhousings do not fit the W55 gearbox and vice versa.
W55 bellhousings do fit the W56 and W57 gearboxes and vice versa.
W58 bellhousings are only compatible with W58 gearboxes.
All W## gearboxes after 1970 had the same output spline as the A## automatic gearboxes.

Some cars such as the MX13 Mark II came only with a W40 that had a unique rear extension and no W50 option.
It might be possible to use a W50 core combined with the old W40 bellhousing and rear extension.

All members of an engine family (eg 4R and 18R) can share gearboxes.
Input shaft splines may differ.
Flywheels and clutch diaphrams usually differ.

Some Celicas, Corollas and Coronas from around 1982 had the 3T-GTE engine with the alloy W55 gearbox.
Around this time the 18R-G was also available with the W55.
Different bellhousings were used.

Bellhousings for T and G engines seem to be compatible.
The Japanese GX51 Cresta has a 1G with W50 gearbox.
Any W50 and this rare Cresta bellhousing could be used behind a 3T-GTE.
The 3T-GTE normally has a bellhousing for a W55 but can use a 1G bellhousing (clutch slave on other side).

I have heard rumours that bellhousings for C engines are the same for either S or A engines.
One of these rumuors must be false.
Being compatible with A engines is more likely to be true.

The ST141 Corona uses a 2S engine mounted north-south.
Use this gearbox to put a 3S engine into older cars.
You will probably still have problems with the distributor hitting the firewall but you can use a crank angle sensor with an aftermarket computer.

Newer gearboxes have codes at the end.

D	Overdrive
E	Electronically controlled
F	4WD
L	?

Last updated 19 Dec 2012