hei unskyld meg azzå men fag språk for meg på engels
som er dysklektiker ja det er gøy vet jeg greire og lese det men forstår bare halvparten da
There are two RWD 5 speed gearboxes that will fit any 4AGE. These are called the K-50 and T-50. There are also 4 speed versions of the same gearboxes called the K-40 and T-40 fitted to other Toyotas, however these are rare. The 4 and 5 speed gearboxes are externally identical. Apparently the K-40 is only fitted to K series engines, whilst the T-40 is almost non-existent, however I managed to find one in a 2TG fitted Corolla. Check the number of gear lever positions - 5 or 6 (i.e. don't forget reverse!).
The K-50 has an integral bellhousing, utilises a cable clutch, and comprises two main alloy sections - front casting with bellhousing, and tail housing. There is also a pressed steel plate that bolts to the bottom of the front section. The T-50 has a separate bellhousing, uses a hydraulic clutch and comprises 4 main alloy castings - bellhousing, two diagonally split front gear casings, and a tail housing. This gearbox is often referred to as the 'split case' alloy 5 speed, and weighs 29 kg.
The K-50 is normally found behind 3A 1500 cc SOHC engines fitted to KE 70 series Corollas and AE 85 Corollas etc. The T-50/4A compatible bellhousing is fitted only to the RWD 4AGE and some 3A engines. The T-50 bellhousing has letters cast into the top section between the uppermost bellhousing to engine block bolt bosses that identify the engine it came from - 3A or 4AG etc.
In either case ensure you get the corresponding bell housing front cover plate (that bolts to the back of the block ahead of the flywheel), and the 2 cast stays that bolt between the bottom of the block and the lower portion of the bellhousing. Apparently the rear crankshaft bearings can flog out if these are omitted.
T-50 Options
The T-50 gearbox was fitted to other engines as well, such as 1S, 2S, 2T, 3T etc. The gearbox itself is visually identical, however the bellhousings differ to suit the parent engine, and the tailshaft housings vary. There are two types of T-50 gearbox - referred to as 20 and 22 spline. This relates to the number of splines on the gearbox output shaft. They both have the same number of splines on the input shaft. There is also a difference in the diameter of the input shaft bearing, which is covered by the bellhousing - 62 mm vs. 68 mm. I ass-u-me the 68 mm bearing is the 22 spline gearbox. The 22 spline gearbox is more desirable as it is apparently stronger. It is also what all AE 86 RWD 4AGEs came with.
This means that the ability to swap a bellhousing is dependent upon getting a bellhousing to match the input bearing diameter. This is particularly important if you wish to upgrade from a (say) 2TG engine to a 4AGE, and intend re-using the gearbox. I suspect some 2TG T-50s are 20 spline and others are 22.
The AE 85/86 series T-50 gearboxes are 650 mm from bellhousing to centre of the gearlever mount, however some tailshaft housings fitted to other cars are shorter, possibly allowing relocation of the gearlever with some mixing and matching of components.
In Australia at least, SOHC 4A engine T-50 bell housings have the clutch mechanism on the LHS, whilst 4AGEs have it on the right. I found a 3A T-50 with a LHS clutch slave cylinder recently. I believe all K-50 bellhousings are RHS clutch mechanism - certainly in New Zealand.
kan noen snille menesker oversette?
