T3 Syncro 4WD Lock Kit

[MK2 GTI]

Hey everyone,
Im not too sure what they are exactly called but today i fitted a T3 4WD locking kit that gets rid of the Viscous coupling (known for failing), It replaces the viscous coupling with with a long metal splined tube, then on the gearbox theres a mecahnical switch (hard to explain how it works) to switch it to 4wd or rear wheel drive. It switches with the same system used for the diff locks. Apparently volkswagen were going to use this system origionally but bailed out and chucked a viscous coupling in, you can see evidence in the mouldings of the back peice of the g'box (You replace it with a hole new rear peice with the locking mechanism in it). If you have a T3 syncro and your viscous coupling seizes up i recomend to get it instead of paying $1500 for a viscous coupling off volkswagen that will probably screw up in 5 years time again. The customer went over to germany and bought it back with him but im sure you can get it sent here somehow. Anyone else ever heard of this system?

[hill billy]

Hi MK2 Gti,

the device is called a decoupler (http://syncro.org/disengager.shtml), I've had one in my Syncro for about 1 1/2 years it was purchased as part of a group purchase a friend and I organised from Bernd Jaeger (http://www.syncro-bernd-jaeger.de/ENGLISH/Zuschaltb__Allrad/zuschaltb__allrad.html) in Germany, cost about $2000.

I still have the old stiff VC installed, the system is fantastic it can be slected on the fly and in normal road use takes a huge amount of stress of the somewhat fragile and expensive gear box.

[MK2 GTI]

yeh thats the same place my customer got it from.