Please post suggestions and questions to my PM or the thread will be a mess of questions and answers. If youd like to discuss/argue something openly - please copy/paste and start a new thread Gen4 type manual Gearboxes "C" series - FWD, Corolla, Trueno FWD, Curren, MR2 AW11, Exiv 4A, 7A series motors, 5 or 6 speed Note the starter location, the easy way to spot these boxes, this is a 6 speed converted for use in an AW11, selector has been moved forward etc "S" series - FWD, Corona, Celica, Camry, MR2 (non turbo), Caldina etc Fitted to S series motors - 2S, 3S, 4S, 5S etc. 1S was fitted with RWD box. S53 (ST162) and S54 (ST182) boxes seen next to each other "E" series - 2 versions, FWD or AWD - Celica GT4, MR2 turbo, Curren ST206, Camry & Solara V6 PARTS ARE NOT INTERCHANGEABLE BETWEEN THESE 3 TYPES! Easy ID C & S boxes look near identical but are not interchangeable, look closely at the starter mount E series boxes are bulky and have a removable shift cable bracket Questions: What are the common faults on these boxes? 1) Leaks - seals have gone hard and need replacing 2) Grinding into gears - syncros are f/d, Reverse grinding is normal - hold the clutch down and give the box time to stop spinning (Old boxes take a lot longer to slow down and there's no synrco on reverse) 3) Jumping out of gear - Syncros worn and/or worn gear bearings 4) Speedo not working - Luckily the cable comes in sections, usually it's the lower section which has rusted, always keep them lubed 5)Cable bushes worn - keep them lubed as well as the selector block My box came with ATF, my manual says fill with ATF - should I? In my humble opinion - NO. All these manual boxes work better with 80W-90. It will in many cases "cure" a grinding box and was specced for all the post 89- boxes. Racers who overhaul frequently and want a few extra hp are known to use ATF in nearly all manual boxes. Can I fit a "C" series to my 3S block? Not without an adapter plate Can I convert my "S" box to 6 speed? No, you will need to fit an adapter plate to a 6 speed box. You can splice a BZR box to the "S" bellhousing but it's an expensive excersise, cheaper/better to find a ST202 box Can I fit an "S" or "E" box to my 4A or ZZ motor? Not without an adaptor plate Can I convert a GT4 AWD to RWD? No, you will need a RWD gearbox - either Supra or Altezza The "E" series was primarily designed as a FWD box, people have tried welding up the internals but it does not last and breaks easily Can I convert a GT4 AWD to FWD? Yes, you need to find a cover plate, RHS driveshaft and diff from a MR2 turbo or ST206, Solara, V6 Camry Can I fit an MR2 turbo box in my Celica/Corona/Curren/Camry? Yes, but you need to swap the selector, linkages and cable brackets as well as driveshafts Are all GT4 boxes fitted with LSD? No, only the FWD "E" boxes come standard with LSD and a few rare GT4 models. Can I convert my "C", "S" or "E" box to LSD? Yes, you can buy them aftermarket, the MR-S uses the same diff Can I do it at home myself? No - not unless you have a workshop, press, micrometers, pullers etc and have worked on gearboxes before. What do I need to swap my car from auto to manual? See pic Are the gearbox mounts the same? No Are the driveshafts the same? No, there are many, many types. Keep the right ones for each box Are flywheels the same? No, all have different sizes and FE/GE are different as well - check VERY carefully your flywheel and clutch fit the gearbox splines, starter and crankshaft before attempting assembly GE gen1 flywheel does NOT work with FE/gen2-4/GT4 gearbox & starter GT4/FE/RAV4/gen2-4 flywheel is larger than the GE gen1 How often should I change gear oil? I recommend once a year - do it when you replace the brake fluid (yes, brake fluid goes stale too) Is there an easier way to drain & replace the oil? Yes - 1)Use the rear plug (red) to drain the oil, let it drain overnight. On GT4 boxes there is a seperate drain for the transfer. 2)Re-fit the drain plug and remove the front filler plug 3)Place a pan under the filler hole (yellow) 4)Remove the reverse switch or selector tensioner from the top of the box 5)Pour oil into the switch or tensioner hole SLOWLY until oil flows from the filler hole. 6) Close the filler hole and reverse/tensioner hole - done I have some 6-speed questions - I would get a 6-spd box from a 2zz celica(c60) and then get an adapter plate, do you know who makes adapter plates. For the half axels i would need c60 ones or would i need some custom ones? Are the shift linkages the same? These are heavy duty questions - I don't know of any adapter plates, those shown in the pics were fabricated by engineering shops. One possibilty is Fraser cars but I think they use Altezza boxes in the Lotus7's AFAIK the Corolla inners and linkages are the same as on the S53/4. Apart from the novelty of the 6 speed I don't think it's worth the effort and expense. The 6 speed has vey short gears and with a healthy 3S-GE or GTE you will be changing gears like a motorbike, might be usefull on some very short racetracks though?