LSD recommendations, LSD reccomendations Options

[Charles Freeborn]

Greetings.
While my engine is out for top end refresh I'm also planning on installing a limited slip diff.
What have people run and why? Obvious choices are Guard (true LSD) Quaif, Wavetrac (Torque bias). Pros / cons of those types? I've heard the TB is easier on the rest of the gearbox. Not too concerned about having to run LSD additive as the fluids get regular service anyway (every event).
Quick rundown of the car:
100% track use (not street legal) Little to no AX - all road course.
2.0L 4 cyl with fairly extensive mods. Estimated hp around 150.
901 side shift with AFKSX gearsets.
Car weighs approx 1700 lbs (18 & change with me in it)
Currently running Toyo RR 225/50 slicks. May step up to Hoosiers if I get more serious about racing. I've got another set of wheels for running in the wet with R888R's. Not great rain tires, but that's what's on those wheels now. When they're done I'll probably switch to RA1's.

Thanks!

[campbellcj]

I went with a Quaife TBD many years ago for same reasons Brant cites, probably after speaking with some of the same people LOL. My car does have enough power for corner-exit traction to be an issue. Especially as I favor and was set-up for tighter technical tracks the conventional LSD's impact on low-speed turn-in /rotation would have sucked. Although I would've liked the decel lockup for sure, decel stability not being a strong suit of the 914.

My trans is about to be opened up and trying to decide what to do - I may ultimately have another one built w/ longer gears and a different diff, as this one is extremely short-geared (AGaKQV IIRC) though the car does rev to 7800 so top speed not an issue. Don't really wanna go more than about 135 in this car w/ no aero... But the car is quasi-streetable again now and cruising 4500rpms on the freeway is no fun.

I do have an LSD in my 911 and can really feel that; it was added after I bought the car after a rebuild with Guard internal bits so I experienced the before & after. In that car it's a huge plus, a lifesaver really, with the massive torque and rear engine.