INURGRL951

Does anyone have or know about the WAVETRAC DIFFERENTIAL offered for the 944 series?? I got an heavily modded 86 turbo with a 968 six speed currently (open diff). What is it locking setting or % you can say any input will be greatly thanked.

Josh B

Hey man! Hope things are going well. I'm sort of looking for an LSD for my car too.

INURGRL951

Hey Josh B have you seen the the one I am speaking of ??

Oddjob

Don't know of anyone using a wavetrac, or some of the other newer/offname brands like OS Giken or KAAZ, etc.

Some differing design/technology than the old traditional clutch disc LSD or a geared TBD. Some of these do not have a good reputation.

Best to contact Wavetrac and ask them about their lockup or how they rate their diffs. From the website, sounds like they can adjust the setup.

Diff setup can have a lot of influence on a car's handling, so depending on your use, there are some things to consider when selecting a diff type and lockup settings.

chrenan

I run a Quaife in mine, which is a TBD and not a clutch type LSD. 90% track and 10% street usage. Let me know if you have any specific questions.

INURGRL951

I was thinking of that diff you got there Chrenan but that one is kinda pricey the last time I checked. Mine is prolly about 85% time on the track I want maximum grip. I tend to do alot of track events and alot of roadcourses and the inside tire is always lit up slowing me down. but my old five speed had the Quaife in it that was an 80/20 lock. Would more lock make it harder to drive on the road ??

Oddjob

Conventional wisdom is to use clutch type LSDs for track use, since they have unloaded lock which helps high speed braking stability.

The higher the loaded lock rate (either by changing ramp angles or by adding discs), the less slip allowed, so the car will tend to push more in tight corners. You would not want a high locked diff for street driving or for auto-xing. Inside wheel will hop or chirp when turning tight corners.

Gear type TBDs do not have a lock % rating. They have no unloaded lock at all, so are less desirable for track use than a clutch type, but certainly much better than an open diff. Also can have a few other quirky characteristics in very slippery situations (snow or ice).

Some technical discussion here:

https://rennlist.com/forums/showthre...ferrerid=15894

chrenan

Oddjob has it. No lockup under braking or deceleration with a TBD like I use. So you still get that unstable rear end feelin under heavy braking, and you get no help with trail braking from the diff.

On the positive side you do get great traction coming out of corners with a TBD, just like with an LSD, and since a TBD is gear based there are no clutches to wear out.

INURGRL951

Ok there is some good advice everyone. So do the make a TBD that locks on decel?? How much is a LSD diff for a 968 6 speed I can get the one in descussing for 1300 bucks.

alxdgr8

Just road in a friends 550awhp Audi that upgraded his rear to a wavetrac, he loves it. Much better control over just locking the rear diff like he used to do. Granted it's not the same application as the 01E, but it's a positive review for the company.

INURGRL951

Well the audi S4 tranny is similar to the 968 other then output for the awd set up I heard. Im guessin where the big black plug in the porsche one.

333pg333

We run a KAAZ in a 6 speed. They're pretty cheap compared to Guards etc. I think around the $1600 mark. We did have some inside wheelspin out of one tight corner during testing of the car. We opened it up and flipped the ramps and now it is a lot better. We haven't have any inside rear wheelspin since but this was at a different track. If you buy a KAAZ you may find that the clutch plates inside are also setup more for a road car and you need to re set them for track to provide more pre load.

alxdgr8

His was installed in a rear diff though, not the front diff on the trans. But the 968 one could possibly installed in the front which would give one torsen diffs on all 3!

INURGRL951

Oh ok so the KAAZ one is LSD style with clutch plates not like the TBD style.

333pg333

Yep. Depends on what you want to do with your car. If you run it on the track then you want a clutch plate oriented diff. If more road and Auto X you could get away with Torsen type.