Paul Waterloo

From Mike Ward's old race car....it's a OEM Porsche LSD, 944/92 968 type with the clutch discs. Sent him a check today.

PN 950 332 053 06

40% lock up on accel and deccel.

Looking forward to getting it and installing it!

MB968

Nice.

Eric_Oz_S2

Suggest you get it rebuilt as they do tend to wear. From memory the rebuild cost isn't too high.

Paul Waterloo

Yes....I was going to replace the clutch plates in it. First thing is to get it here.

155

At a minimum this will increase the appeal/resale value when the time comes. Hopefully you can get a DE or autoX day in this season to take full advantage of your new mod. Enjoy it!

steve g

Congratulations Paul. I am waiting to hear back from another Rennlister too !

rude944

So, on topic of factory LSD, how much do you expect to pay to rebuild this unit?

I have a bit of the ol' pinion bearing noise in my '92, and while I have the 6-speed out and apart, it makes sense to put an LSD in... here in the Pac NW, wheelspin is a really big issue. I'm a bit torn to go w/Torsen or disc, new or used. Factory or aftermarket. Car will be 951 based Turbo.

Lets talk about LSD. I've had so much fun with LSD, unless the whole world was spinning.

Paul Waterloo

I remember a Grateful Dead concert at Alpine Valley, WI in the 80's.....fun night!

steve g

Paul, I guess we have more in common than 968s



Still waiting to hear back about my LSD.

EDIT - Damn, the one I wanted got sold.

Lear35A

Hey I'm envious. I have one of the few 968 M030 cars ordered without the 220 LSD option. I would like to add one. Factory would be nice, but I suppose I could consider adding non factory bits to make it happen. There are different types out there, and I too would like to hear opinions, pros and cons regarding those. I've already spent too many $ and too much time racing, so mine's just a street car.

jeff968

From the factory you have two types of LSDs. The 92 968s got the ZF where the 93-95s got the Torsen (Torque sensing). If you ever come across a 968 parts car and want to know if it had LSD in it when new just let me know and I can look it up for you. I just need the last 3 digits of the VIN.

Lear35A

Thanks Jeff. Now I've just got to find one for you to check.

MB968

I've had both a Quaife in a Mazda/ProbeGT which I autocrossed, and the clutch type in my 92 968 (only once last year autox). I don't expect most to see much of a difference on the street, or even for autox. But, I did notice the following subtle difference in traits for the two:
- Quaife was very smooth in acting, I can feel the clutch type when driving slow around tight corners, such as turning a corner after a stop. It has a bit of a choppy feel, don't know if it is the clutches slipping and reengaging, or the inside tire slipping as it goes around a tighter radius. I wasn't surprised at this difference in feel given the engineering in each design. Clutches are fairly simple to understand and could account for the feel mentioned above. The quaife is basically a worm/wormwheel type of non-backdriving gear setup. The pitch angle of the worm determines how much the unit can be backdriven. Because of this nature, and how the quaife LSD is designed it will push torque through the unit to the other wheel if one doesn't see as much resistance at the tire.
- During one autox with the quaife, I got one of the back tires off the ground. I don't know if it is true for all torque/worm type LSDs, but the tire off the ground started to spin up. Had to quickly back off the throttle. Don't know for sure if the other tire was transmitting any torque, suspect it was, but not sure how these act under this type of circumstance, one tire off the ground.
- Worm type gearing is usually incredibly durable, and very long lasting. I suspect Porsche switched to this type for its smoothness (can't even tell you have an LSD) and long term lack of maintenance.