TT or S3 fron suspension arms

[Carrera2RS]

Looking at prices (thanks Edition 30) seems that all the parts new are likely to be £350-400 all in inc VAT.
This is no more expensive than some top mounts 

Plus the end result in terms of camber will be the same, roll centre much better, 2+kg lighter per corner and include a WALK for caster a far better solution it would seem.

[kevinm]

Are these correct or do I need the later ones ?

http://cgi.ebay.co.uk/AUDI-TT-FRONT-LOWER-SUSPENSION-ARM-WISHBONE-B-JOINT-/400159740570?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item5d2b61129a

They are mk1 tt cast arms. Look at the rear bush. It is pressed into the arm. mk2 tt/mk5 golfs have the rear bush in a seperate hosing like the WALK.

[Carrera2RS]

Yes, sorry for not mentioning that this picture shows Mk1 arms.

The MkII are alloys and shown here very well in this A3 thread http://www.audi-sport.net/vb/new-a3-s3-sportback-8p-chassis/71940-tt-suspension-arms-fitted-my-a3.html

[danishmkvgti]

The TT arms are longer that the normal GTI ones.

About the TT hubs..
1. Do they fit on a mk5? I tired to figure that out but could not do so :( (the brakes will definitely fit, what about the steering rod?).
2. If they fit will we have to change the wheel bearing (or is it the same - just to let you know there are 2 different hubs and bearings on a mk5 depending on the model/year/engine....; so my guess is that we have to change them also)?

Could you guys post a image with the full TT hubs (I saw the one taken only for the arm pivot).

I have just measured the GTI arms against the TT arms, the TT are shorter than the GTI ones 



GTI



TT

[rex]

Interesting... Why do we have more camber and the wheel clearly is pushed out with the TT arms? 

[Tfsi_Mike]

Interesting comparison Jake.

*waits for technical guru explanation 

[mkviken]

Lots of info on here about roll centre and why the TT arms are better positioned etc

http://forums.vwvortex.com/showthread.php?5469326-US-versus-Euro-Height-amp-tire-sizing-Ride-Handling-Balance-Woes

[jon-tfsi]

The T arms may well be shorter than GTI's, but the TT arm + ball joint = longer than the GTI arm + ball joint

They are 6 to 12mm longer than GTI arms depending on adjustment 

[danishmkvgti]

The T arms may well be shorter than GTI's, but the TT arm + ball joint = longer than the GTI arm + ball joint

They are 6 to 12mm longer than GTI arms depending on adjustment 

I have come to the same conclusion, i just haven't picked up the TT ball joints yet. But fact is the arms itself is shorter 

[the bruce]

The T arms may well be shorter than GTI's, but the TT arm + ball joint = longer than the GTI arm + ball joint

They are 6 to 12mm longer than GTI arms depending on adjustment 

Yes, this is the only way why the complete TT arm assembly is 'longer'.

[vRSAlex]

If you look closely at the pic you will see the angle of the rear part of the GTi and s3 arms is the same, but the TT arm has a greater angle.  Is the measurement from the ball joint to the back of the arm that is important in this case.

This is also the reason the caster angle changes much morewith the TT arms than the other arms.

As the TT arm is much further forward than the other arms the rod end needs extending to get the toe in line and this increases the track width at the bottom of the wheel and thus creates more camber.

[danishmkvgti]

If you look closely at the pic you will see the angle of the rear part of the GTi and s3 arms is the same, but the TT arm has a greater angle.  Is the measurement from the ball joint to the back of the arm that is important in this case.

This is also the reason the caster angle changes much morewith the TT arms than the other arms.

As the TT arm is much further forward than the other arms the rod end needs extending to get the toe in line and this increases the track width at the bottom of the wheel and thus creates more camber.

I'll measure them tomorrow Alex 

[jon-tfsi]

How much extra caster would you say the TT arms add Alex? 

[vRSAlex]

How much extra caster would you say the TT arms add Alex? 

Around 1 deg.  With a walk kit its 2 degs.

[jon-tfsi]

If i remember rightly a std GTI has approx 7.5 Degs. What would you say the optimum amount would be for a MK5?

I thought the WALK added 0.5 degs ?