LSD DIFF parts? are they worth it?

[Festy46]

Lol sorry, I'm trying to get better at the whole engine/worksmanship stuff. When I initially bout our rallycar all I knew was oil/tire changes. Been tearing into motors recently, but haven't messed with transmissions/steering and the likke yet. Basically I was told to get a limited slip but I'm not sure if its worth it or not, just been told to get 1 put in.

Save your limited slip money and put it in some good suspension parts and "grippy" tires. We've run against guys known to be using limited slip and they will get a little better run coming out of the corner, but a good driver that knows how to "feather" the accelerator can stay close to them. If you're running rally races, limited slip would be even less noticeable than a circle track.

[festyfreak39]

I have one in my DD, doesnt make a difference on pavement or gravel just ice.

[PhoenixSHO]

Aren't the SHO's prone to diff failure anyway?

Yup , overspin will throw it out eventually (and sometimes people are just cruising on the freeway and it gets out randomly) , but PG will shorten the life of the MTX by 99% - you basically wont make another 3000 miles with that thing installed.

[Advancedynamix]

I actually like my open diff on the road coarse. I spin my inside wheel to bring the revs up sometimes and then when the car unloads it grips and I rocket off. Like slipping the clutch on a motocross bike or quad. It's hard on my tires though.
I don't like the way Helical LSD's perform on tarmac, so when I do need an LSD (probably will with another 50 or so HP) I'll most likely use the Mazdaspeed unit, because it's a viscous style diff. Guys who launch the proteges with these diffs tend to crack them, but I never launch my car so I don't see this being a problem.
For a rally car, the M factory (basically a copy of a quaife) should work fine. I've driven lots of Rally cars with Quaife diffs and in the dirt they work very well, and most FWD rally cars don't make enough HP to show the bad traits of a helical diff on the tarmac.
I like the idea of the phantom grip, but can see how it could weaken an already weak link in certain transmissions. Ideally someone would come up with a diff like the RX7 lsd (plate style viscous) that drops into a G-series. That would be a huge step forward for our cars.

[WTFestiva]

Hmm we're switching to the BP engine putting performance headers as well as a cam on, with possibility of a megasquirt, and re-wiring, unfortunately i dont think we have time for the Transmission switch, 2 quick questions here, 1) Phantom grip, Recommended or not... and 2) stage 2 exedy clutch? Just looking for a couple quick answers.