Quote:
Originally Posted by LSxJunkie
A Torsen is a great choice for HPDEs and street driving. Clutch packs can be inconstant, noisy, and I've had them go on me before. Eaton TrueTrac was the preferred solution, and I loved the one that I got to try out. C5 and C6 road racers with any sort of serious investment in their cars all switch to Quaifes from the stock (clutch pack) LSD.
If you're driving your car hard enough on the street to feel the shortfalls of your Torsen, you're driving too hard for public roads or you've made such a hash of it that you've placed your self in a situation with one wheel on ice or hanging in the air. You're also going to be making a lot more power than stock. I highly doubt anyone is going to find the stocker lacking at stock or bolt-on power levels, especially for street driving.
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You're spot on for the average Joe. For the discerning rear-drive track rat [rarely applicable], a clutch-pack diff like OS Giken is usually an improvement over a Torsen in measurable lap times [per a Grassroots Motorsports test from a year or so ago]. A clutch-pack diff that's inconsistent or failing is one worth throwing in the bin, I'm sure we can agree easily on that. Next HPDE I'm at with "the 'vette pack" and I'll ask what kind of diffs they're using just for fun.
A Torsen is great for most situations and most people. Also, like arghx7 said, depending on the stability control programming, the Torsen + VSC might use individual wheel braking to effectively simulate a clutch-pack when traction is variable [i.e. one wheel on ice in winter], when the driver is inducing a drift [fun!], and use the Torsen mechanical torque vectoring when applicable [exiting a corner]. The best of both worlds.