limited slip diff

[Mellow Yello]

does anyone know if a limited slip diff was ever fitted to 8v cupra sports as standard or even an option from seat ? , mine appears to have one but unsure if its standard or not , i dunoo my gearbox code but i think its o2o as it is cable clutch rod shift .

thanks cole

 

[Cupra Kid]

I'm pretty sure it wouldn't have one as standard - mine definately doesn't!

 

[Fl@pper]

not seen or heard of one yet, not standard anyway

 

[nog986]

Have you opened the box to look? Or why do you think ones fitted? Is it because when you jack the car up and spin one wheel the other spins the same direction?

If it is because of the above reason I would say its maybe not an lsd. The 020 standard diff has a massive preload spring behind each output flange which creates this effect.

But you never know, someone may have got one fitted at some stage. Good job if you have one.

 

[Mellow Yello]

a few weeks ago when i was at my local drag strip , when i launched in dry weather both wheels span up , i thought it might have just been luck , but everytime i launch in dry or wet weather both wheels spin , none of them stop either if i decide to sit with the handbrake on both will continue to spin until i let off the throttle

 

[nog986]

Well then. it looks good for you then. Do you find it pulls your arms a bit when your going through tight turns or if you give it full lock and drive away keeping the lock on do you hear clunks and bangs. If so it could be a plate diff such as Kaaz or Gripper, the gripper being the more violent of the two. If its still pretty smooth it could be an ATB type diff such as Quaife or peloquin, not sure if would be a wavetrac type one as Im not sure as to how they behave.
The ATB type will pull you slightly when your gunning it in the real twisty stuff but otherwise you would hardly know its there.

 

[Dave_R]

There isn't a plate diff for the Ibiza only a ATB and trust me you know the differeance! I love mine..... going by it's a ATB you will feel it lock in when it's needed and pulling the steering at 1st.

If you put the handbrake up it wouldn't really stop one front wheel them spinning, once the wheels loose traction they will continue to spin. And I found since I've had my ATB diff fitted the gearbox is a lot louder than a standard one.

 

[nog986]

There isn't a plate diff for the Ibiza only a ATB and trust me you know the differeance! I love mine..... going by it's a ATB you will feel it lock in when it's needed and pulling the steering at 1st.

If you put the handbrake up it wouldn't really stop one front wheel them spinning, once the wheels loose traction they will continue to spin. And I found since I've had my ATB diff fitted the gearbox is a lot louder than a standard one.

Ah! I would check more details on that Dave. He is using an 020 box for which you can deffo get a plate diff. I have had both gripper and kaaz in mine. Also had the quaife atb and they are pretty good but you loose time as you loose traction when you unload a wheel in a corner. You can also get kaaz plated diffs for the 02A which comes in the 16v, also plenty of other plate diffs on the market for the 02A available in Germany and USA. Check out www.bildon.com They have a good selection on there.

 

[Mellow Yello]

you say its "louder" by this do you mean you get a whining noise from the box when driving slowly ? , yes it does pull your arms quite a bit , especially on backroads or when you accelerate hard from a roundabout , it also judders slighty when you change gear at low revs , much like a straight cut box would do but far less violent ?

 

[Dave_R]

Ah! I would check more details on that Dave. He is using an 020 box for which you can deffo get a plate diff. I have had both gripper and kaaz in mine. Also had the quaife atb and they are pretty good but you loose time as you loose traction when you unload a wheel in a corner. You can also get kaaz plated diffs for the 02A which comes in the 16v, also plenty of other plate diffs on the market for the 02A available in Germany and USA. Check out www.bildon.com They have a good selection on there.

But aren't plated diffs a bit violent for road use.... fwd anyway? My mate got a "medium" choice one on his 106 rally car and he finds it very harsh for road/track use.

Mellow......... one way to test it I guess and Nog correct me if I'm wrong. Jack the front up get someone to hold one wheel and you try to turn the other wheel it should fight the other person holding the wheel if it's a LSD or ATB diff. If it's a standard one in there then it should let you turn the wheel and not fight against the other person.

The car could be throwing u about in corners is because of torque steer aswell

And I have found that when cornering hard the car feels like it's "biting" into a corner and holding onto it.... it's a odd feeling to explain like lol. Mine doesn't judder going slow..... if I back off at say 50mph I can hear some sound from the gearbox but bear in mind I have stiffer engine and gearbox mounts.

 

[nog986]

The Kaaz plate is a very good diff and doesnt pull much more than a quaife atb, the gripper was very violent. With power steering you would hardly feel the difference but it depends on what you want. Most plate diffs can have the pre loads and ramp angles changed to create as smooth or harsh transition as you require. For rallying I prefer mine quite high to allow for at least one wheel to drive if I break a shaft. That is why I changed from an ATB to a plate. I was leading the class on the last stage of an event when I sheared the cv joint at the back of the hub. The atb cant drive if there is only load on one side.(I was about 4 corners from the end).

As for testing yes that idea could work but its not totally scientific.You need to lock one wheel and apply a measured force to the other shaft to see at what force the preload "breaks".A torque wrench would be ideal. However this will only work on the plate type, as an atb will freewheel.

By the way Dave, I wasn't knocking you, I ws just saying that if you want a diff for an beeza they are available.