Share your E## Gearbox knowledge here.......

[MilfHunter]

ST185 RC is also 3,9. I have a heap of stuff for sale in the sales if you need one.

To cut a long story short - the early "wide boxes" have alu covers and the later "short" boxes have pressed steel covers.
All the wide boxes have the same 5th ratio.

The F1 locking diff differs from later VC type diffs and the drive shaft hubs also.


Pic shows a 2wd LSD diff vs a later (F2) 4wd diff


Here's the notes I was able to find:

E Gearbox Identification

There have been at least 7 different GT-Four gearboxes, possibly more.
So how do you tell them apart if you find one at a wrecker?
Toyota don't stamp their gearboxes with the type number, so it isn't easy.

The fact that Mr T didn't mark these boxes didn't make life easy for anyone either.

There is in fact a marking system of sorts on the chassis plate-
E- type
XX or XXX - model type, ie 50, 150
F - 4WD
5 - manual selection of front diff

On the box - (Near the clutch fork hole)
1st digit = year
2nd +3rd digit = month
Remaining = serial no

An example is the ST185 gear diagram which clearly states different ratios for the Rallye version,
the ratios aren't given and I'm not sure if they are referring to the Sainz version or not as there is also an ST205 "Rallye" version over here.

Sofar I've drawn up this listing:
Ratios: (Japan spec)
........1st.. 2nd...3rd...4th..5th...Rev..F/Drive
E50F1 3.583 2.045 1.333 0.972 0.731 3.583 4.285 ST165 1986 JDM only with locking transfer
E50F2.3.583 2.045 1.333 0.972 0.731 3.583 4.285 ST165 1987-1989, Viscous version
E150F 3.384 1.913 1.333 0.972 0.731 3.545 4.285 ST185 1990-1992,
E151F.3.583 2.045 1.333 0.972 0.731 3.545 3.933 ST185 RC - revised synchros on 2,3
E152F.3.230 2.142 1.518 1.258 0.731 3.545 4.285 ST185 Rallye
E153..3.230 1.913 1.258 0.918 0.731 3.545 4.285 MR2 1991-1992
E153..3.230 1.913 1.258 0.918 0.731 3.545 4.285 MR2 1993-1995 - revised synchros on 2,3,R,5
E153..3.230 1.913 1.258 0.918 0.731 3.545 3.933 Camry/Windom/Solara/Lexus V6 (non LSD?)
E154F 3.384 1.913 1.258 0.918 0.731 3.545 4.285 ST205 - revised synchros on 2,3,R,5
E154F ..........................................ST205 Rallye - revised synchros on 2,3,R,5


Kaaz..3.231 2.235 1.667 1.250 0.964 3.545.any...close ratio gearset (US$3000) http://www.monkeywrenchracing.com/produ ... ts_id=1133


Narrow boxes have pressed side covers and are not compatible with the wide version, they are some 20mm narrower.
Later "NARROW" versions - not compatible with earier types
E350...3.583 2.045 1.333 0.972 0.731 3.583 4.285 Scion TC - non LSD, no oil pump
E351...3.583 2.045 1.333 0.972 0.731 3.583 4.285 Camry, Solara, Avensis 1992- non LSD - no oil pump http://www.scribd.com/doc/91255866/170/ ... -ASSY-E351
E52/E56.3.583 2.045 1.333 1.028 0.820 3.583 3.944? Camry 1988/ Lexus ES250/300 - non lsd - oil pump
E56F...............................................Camry 4WD
E250...............................................RAV


ST165
E50F1 Only fitted to 86-87 Japan spec models. No viscous coupling, locking centre diff. Not a good performance choice. Has a large pneumatic actuator fitted to the transfer.

E50F2 Fitted to all 87-89 models (post build number -0002274). Introduces viscous coupling. Available with 4.285 final drive (Japan) or 3.933 (export). These have a pressed steel clutch fork.

ST185
E150F Normal early ST185 gearbox. Identified by the cast steel clutch fork.

E151F RC gearbox. Improved dual cone synchros. Fitted with 3.933 final drive in all homologation models. This gearbox may have also been fitted to other post 91 facelift ST185's. Not sure on their specification though.

E152F I believe that this is the gearbox from the Japan only GT-Four Rallye model.
This has different ratios, Without stamped markings, they all look the same.

ST205
E154F Revised gearbox with different ratios for better accelleration. Dual cone synchros are used as per the RC gearbox.
The fwd selector lever has been removed. Obviously this is the gearbox to buy! Easily identified by the lack of fwd selector lever and the small rubber vent below the shift fork.

There's also race kits for these boxes with straight cut gears and dog engagement (as on bikes)
The prices are steep, ie L1000 for the input alone
http://www.ingearperformance.com/wp-con ... awings.pdf

[MilfHunter]

I found this doc on here years ago, may have been borrowed from a US site
Anyhow this is probably the best place for it -

Im currently converting my AWD tranny that came with the 2nd gen 3sgte I used for my swap.

Converting the AWD to a FWD tranny is not as hard people would think, and when finished, it will be exactly as an MR2 tranny, except with the shifter cables already going in the right direction. Also, with this method, your center differential won't burn since it will be completly removed.

Goodies needed :

-Alltrac tranny.
-GT4 shift cables.
-MR2 turbo differential (open, OEM Toyota VLSD, aftermarket LSD)
-MR2 differential cover.
-Speedometer drive for the differential if it does not come with the diff.
-2 axles seals (optional, but recommended and cheap).
-1 set of alltrac outer axles.
-1 set of inner MR2 axle with passenger axle carrier (get LSD inner axles if going with the OEM Toyota MR2 turbo VLSD unit).
-A puller and access to a press to replace 5th gears on transmission.
-An Alltrac crossmember with the transmission rear mount (or modify your existing one).

I'll try to do a step by step guide (I will really need to post pictures later):

1 - Remove the transfer case by unbolting it from the bellhousing case. Inside this transfer case there is the gear that drives the propeller shaft (that goes to the rear differential). Also there is the center viscous coupling unit. Remove the transfer cases (3 parts) and everything inside. You won't need these anymore.

2 - Open transmission by removing 5th gear case. Remove 5th gears. Remove bellhousing case. Remove shifting forks. Finally you can remove the center/front differential from the bellhousing.

3 - Change drive axle oil seal from the bellhousing if your tranny has high milage (cheap at dealer).

4 - Buy an MR2 differential. I suggest getting an LSD unit, since opening that tranny is a pain and getting LSD with a 3sgte is a must IMHO You either can buy an open MR2 turbo diff, a OEM toyota VLSD diff, or better yet, aftermarket torsen diff. The MR2 differential will work perfectly in the AWD tranny. The bearings will sits nice and thigh.

5 - Remove ring gear from the AWD front/center differential by removing the 16 bolts, and tapping it with a brass hammer (or place a piece of wood and hit it).

6 - Place the ring gear on the MR2 diff, place the 16 bolts.

7 - Order a speedometer drive from Toyota dealer (cost me 80$ can, but I bet you can get a better price than that). Place the speedometer drive on mr2 diff.

8 - Install diff. If your AWD tranny grinds, and you'd like to replace the synchros for not too much, now is a good time to do it.

9 - Re-assemble the tranny: Place the input/output shafts, selecting gear forks, oil cooler lines, bellhousing case, 5th gear, 5th gear cover.

10 - At this point, you'll need the differential cover from the MR2 that will bolt on where you removed the transfer case. You can get this from a toasted MR2 tranny. This cover has the passenger axle seal. Replace it also if worn or old.

11 - Get MR2 turbo inner driveshafts. You need axle with turbo and LSD if using the OEM Toyota VLSD diff. Otherwise, if using open differential or aftermarket LSD (TRD, cusco, etc) use the normal turbo axle. The normal Mr2 turbo non-LSD axle can be modified also to fit the OEM Toyota LSD diff.

12 - You need to make hybrid axles. Use the celica alltrac OUTER axles, and the INNER MR2 axles. The outer axles is those that enters the hub with bearing at the wheels. The inners enters the transmission to plug into the diff. You can separate the outers and inners axles by removing 6 8mm Allenkey bolts.

13 - Install the new alltrac/mr2 hybrid tranny. Use the celica alltrac shifting cables, use either electronic or cable driven speedo by swapping the correct one on tranny. Use 3sgte clutch/flywheel/pressure plate. Place the alltrac/mr2 hybrid axles.