Which Subaru transmission should I use?
The latest model, lowest mileage one you can afford, and most closely matched to your engine i.e. turbo / aspirated.
TY752.... from 1990 to 1998 can be used. If you need to shorten & seal the TY752 trans you will need a TY754 or later center differential housing. Their slightly different design makes them ideal for shortening, they bolt up to the TY752 split case housing.
Non-turbo TY752 transmissions used a push clutch which allows you to retain the VW cable clutch and pull the top of the clutch fork away from the engine. These are not suitable for turbo engines.
Turbo TY752 transmissions used a pull clutch which features a hydraulic slave cylinder to push the top of the clutch fork towards the engine.
Non-turbo TY754 transmissions produced from 1999 to 2004 generally used a push clutch with a hydraulic slave cylinder of a different design that pushes the top of the clutch fork away from the engine.
Turbo TY754 transmissions used a pull clutch with hydraulic slave cylinder like the turbo TY752.
TY755 and later from 2005 generally all used a push clutch for non-turbo and turbo applications. These featured a hydraulic slave cylinder to push the clutch fork away from the engine.
TY755 and later transmissions generally have a pop-out stub axle and cv joint as 1 piece. In order to use the Subaflange, a retrofit to the older ty752/ty754 circlipped stub axle and older seals is required. Please note this on your kit order and we can supply.
Are all the bellhousings the same?
The TY752 bellhousings are a '4 bolt' bellhousing and the TY754 and onwards are an '8 bolt' bellhousing. They simply have 4 more bolt holes fitted, the pattern is the same. They can be mixed and matched.
Will the gearshift work the correct way in my vehicle?
Yes the gearshift will work correctly in your type 1 Beetle and your Split Kombi/Bay Kombi. You simply have to join your shift rod to the Subaru shift rod via bolts or universal joints. The forwards/backwards direction and left/right direction will be correct.
In the T25/T3/Vanagon/Syncro/Bulli you will need to modify your shifter at the front to have a ball and socket like the Beetles & Kombis have. This corrects the direction of the shift.
Which axles and CV joints do I need to use?
Use the 15 5/8" (396.87mm) axles and type 2 CV joints. These axles are commonly used as "Kombi into beetle" axles and are available from all good VW stores. You can also use 930 CV joints and the same length axles, but with 28 splines.
What about the dipstick?
You cannot use disptick anymore since it interferes with the flipped crownwheel. Use a rubber cover such as a chair leg plug and a hose clamp to securely close off the dipstick tube. For a great finished look, use a -12 hex hose finisher :
You can choose to drain the entire 3.7 litres of transmission oil every time you want to check the levels, or simply drill all the way through this hole/boss already cast into the case (circled in orange). Simply fit with the correct size bolt and you can check the correct transmission oil level by undoing this bolt when in the vehicle.
My transmission has different CV's / Stub axles
Transmissions manufactured from around 2006 (TY755, TY758) use a 'push in' stub axle and CV joint that is one unit. The circlip on this unit is smaller to allow the unit to be pushed in and pulled out of the differential.
|Old style separate CV joint||New style 1 piece CV joint & stub axle|
In order to use the Subaflanges, these newer style differentials need to be fitted with the old style stub axles, using a larger circlip to permanently hold the stub axles in the differential. Older style oil seals must be fitted to the transmission case to match up with the size of the older style stub axles.
Good used stub axles and new older style seals are available for purchase in the products section.