TT hub - different to S3/B6

[jimk04]

Are all the ally hibs - ie S3,TT and B3 Passat the same?

I have read uncertain comments about the TT one having a different set up regards the track rod end...?

[vRSAlex]

The tt hubs are different to the s3 and passat hubs.  The ball joint mount is lower.  I believe the s3 and the passat hubs are the same.

I will be fitting my tt hubs soon then I will know if they fit ok or not.  I'm probably going to use some tt tie arms and rod ends too.

[drsilviuro]

And then you have to make a thread about it :) There are too many questions about this :)

[jimk04]

^^^^!!

Have read up loads and still not 100%!

If the difference is in the lower ball joint pick up - (I think its to alter the angle of the wishbones - make them flatter?) - then the issue with needing TT tie rods and joints is nonsense - as the part of the hub that picks up the track rod ends is unchanged?!

I read that the TT tie rods are much shorther to accept the longer cast ally TT track rod end. The threads are both M16x1.5 so a GTI tie rod could be cut down and threaded (on the car if need be) to allow use of TT alloy rod end....if thats how peeps want to go!

[vRSAlex]

^^^^!!

Have read up loads and still not 100%!

If the difference is in the lower ball joint pick up - (I think its to alter the angle of the wishbones - make them flatter?) - then the issue with needing TT tie rods and joints is nonsense - as the part of the hub that picks up the track rod ends is unchanged?!

I read that the TT tie rods are much shorther to accept the longer cast ally TT track rod end. The threads are both M16x1.5 so a GTI tie rod could be cut down and threaded (on the car if need be) to allow use of TT alloy rod end....if thats how peeps want to go!

The issue is that the TT hubs and wishbones together increase the camber and caster which means you have to wind the rod ends out quite a way to get the toe correct.  This doesnt leave that many threads holding the rod ends to the tie arms.  The gti tie arms are not threaded all the way so to cut them down enough to fit the TT rod ends wouldnt leave any threads.

The safest way is to fit the TT rods and arms or fit some longer rod ends to the gti arms.

[jimk04]

Thanks for your input Alex

I meant if one was to cut down the GTI arms that they would need rethreading further down to allow the TT rod end to fit.

But I appreciate that to do the job 'properly' requires the proper TT ties and rod ends. I just thought that money could be saved (for those with the appropriate tools/skills) to cut down and rethread their existing long GTI tie bars to accept TT rod ends.

Are the GTI rods and ends ok for the TT bones and ball joints on max neg camb - on their own (forgetting about the hubs)!?

[vRSAlex]

It all depends on how low you are running as well.  On springs you can run full adjustment on the wishbones and get around -2 degs camber, but on coilovers with no adjustment the camber is around -2.5 degs. The GTi rod ends are ok at that, but I've not tried them with any more camber.  I will do some tests when I change the hubs.

The GTi tie arm unfortunately isn't 16mm all the way and steps up to a larger size iirc.  I will take a look at this too.