VW / Audi 1.8 Litre to Borg Warner T5 Bellhousing
This bellhousing will mate the Volkswagen, Audi, SEAT or Skoda 1.8 litre 20 valve turbocharged engines to the Borg Warner T5 (2WD Cosworth) gearbox.
The 20 valve turbo from the VAG Group produces up to 236bhp in standard form (Audi TT Quattro Sport) and so is an ideal choice for a fast rear wheel drive conversion with little engine modification required. With our purpose made bellhousing you can now fit this ubiquitous engine to the robust Borg Warner T5 gearbox.
The hydraulic actuation is achieved using a standard Mondeo slave cylinder, which connects via an adaptor (included) directly to the bellhousing rear inner face. The nose of the T5 will need to be cut down to allow the slave cylinder to slide over but this will not affect the integral oil seal.
- If not using our clutch kit please use the VALEO Part # 826704 friction disc for the Sierra Cosworth T5 box. This has the correct 1″ 23 spline setup. You may need to retain your standard cover depending on the engine
Please see the list of complete kits to the right for a complete conversion solution.
* Requires a spigot bearing from the longitudinal Audi A4 engine.
** Starter required is the Audi A4 1.8 turbo variant
*** The bottom bellhousing holes are spaced to fit the inline A4 sump. If using a transverse sump or other engine variants, the sump holes will not align. In a RWD application this is not a structural issue as the engine is supported at the midpoint and the engine / gearbox assembly is not subjected to the same forces.
Specification and Application
|Component||VW / Audi to Borg Warner T5|
Machined on front and rear faces
|Actuation||Hydraulic slave cylinder|
|Gearbox to Engine Face||7.48 inch (190mm)|
|Engine – 1.8 R4 20vT||VW 1.8 litre 20 valve turbo (Polo, Golf, Bora, Passat, New Beetle, Jetta)|
Audi 1.8 litre 20 valve turbo (A3, A4, A6, TT)
SEAT 1.8 litre 20 valve turbo (Ibiza, Cordoba, Cupra, Leon, Toledo)
Skoda 1.8 litre 20 valve turbo (Octavia)
Audi/VW 1.9 litre TDI engine
All Audi/VW water cooled 4 cylinder engines since 1975 ****
|Gearbox||Borg Warner T5 ***** Borg Warner T5 information|
Rally / race
**** Please note that these engines share the same bellhousing pattern however we have only tested on the 1.8 litre 20 valve and 1.9 litre TDI engines.
***** Fits Sierrra Cosworth T5. The TVR gearbox flange is 4mm smaller in diameter and so will need spacing out. Mustang T5 has a different spline input shaft.
If using a USA or Australian T5 gearbox you may need our 10 spline 1 1/16″ clutch friction plate.
High quality product and arrived within a week or two which is impressive considering the UK based company. I think it's going to work for my application, with a few minor mods to the casting it can be used with audi aan/7a/3b..