HELP!Is this a Viscous or a Clutch type LSD?

[Bronze MFP]

Why not just install the clutch lsd in your car? Are you dead set on a helical? I thought I was too because I thought 2way lsd's were for drifting. Lo and behold, they grip like a mofo too The noise and jerkyness of it can get annoying in parking lots, but the looks on people's faces from the sounds it makes will never get old!

[float_6969]

I've just done A LOT of research and I really think that a helical differential is the right choice for me.

I drove on this one for 3/4 days. It does lock up the rear end very well, I will give it that, but I drive this car quite a lot, and the noise and jerkyness weren't appealing at all.

You can call me a wuss if you want, I don't care.

[Bronze MFP]

Not at all, If i didn't get a smoking deal on a brand new tomei lsd, i would have a helical in my diff right now. The only thing i like better about the clutch over the helical is that if one wheel is in the air, the wheel on the ground still gets power sent to it. I 3 wheel a lot in my car going over curbs n stuff, so that was appealing too.Who knew choosing a diff would be so hard?

[C-Kwik]

on clutch type, you dont need friction modifer or whatever, thats for VLSD, the clutches in the diff is the friction modifer...

Friction modifiers don't do squat on a VLSD. The viscous fluids in a VLSD are sealed from the outside. It does not use the gear oil in anyway as the medium in the locking mechanism.

[C-Kwik]

The problem with a viscous type is that one tire has to start slipping before it will lock them up.

Not exactly true. They don't actually ever lock-up. It just provides resistance to opposite movements of each axleshaft. So the wheel that would be slipping in an open diff would just slip less. And some of this torque that doesn't exit through this wheel gets transferred to the wheel with more traction.

As far as helical(torsen, quaife), they are rather comfortable to drive on. They are essentially open until you actually apply torque to it. One of the most streetable designes ever made. The twin turbo supras had these and they work quite well from my experience with one. much less maintenance as well. But they are pricey, but who can match Quaife's warranty (http://www.quaifeusa.com/differentials/warranty.htm)?

[float_6969]

You're right, and I'm aware of that. I shouldn't have said that they locked up.

Anything with a lifetime warrenty is alright in my book!