vlsd vs lsd

dvllib · Post by **dvllib** » Wed Mar 16, 2011 6:56 pm

im lookin at getting a rear lsd for my lib. but just wondering the difference between the vlsd and lsd or are they the same thing. im going to use my car for the road and bush so what would be better. and does anyone have one they want to of load

justin35 · Post by **justin35** » Wed Mar 16, 2011 7:16 pm

i once did a trip with my dad and a mate,we came along some really big ruts which caused our front wheels to lift of the ground,my dads subi with the lsd did ok until one front wheel and one back wheel came of the ground the lsd wasnt able to spin the opposite side wheel but my mate with the vlsd subi was able to keep crawling up the hill even when one front and rear wheel kept coming of the ground vlsd is much stronger and tighter than a standard lsd

dvllib · Post by **dvllib** » Wed Mar 16, 2011 7:22 pm

justin35 wrote:i once did a trip with my dad and a mate,we came along some really big ruts which caused our front wheels to lift of the ground,my dads subi with the lsd did ok until one front wheel and one back wheel came of the ground the lsd wasnt able to spin the opposite side wheel but my mate with the vlsd subi was able to keep crawling up the hill even when one front and rear wheel kept coming of the ground vlsd is much stronger and tighter than a standard lsd

thanks but was it different than your dads on the road. i dontt want things bindin up

rtcb65 · Post by **rtcb65** » Wed Mar 16, 2011 7:42 pm

The best way to think of the main lsd's in the subaru's well the r160 diffs : M.Y,L series and early liberty's , or think of male spline diffs is,, there are 2 main lsd types. There is the vlsd : viscous limited slip diff.. Viscous meaning oil. Well thick oil like syrup . When one side spines up the oil spinning brings in the other side. No binding as sides only joined by oil. That is the easiest way i can explain it..

Other one is a clsd , i believe, meaning clutch pack limited slip diff. I personal believe it the better of the two as clutch packs send pressure to the other side wheel once one side spins up . More positive connect up. Also should not bind up as pressure is only applied across when one wheel spins up , as so to speak.

There are other types of lsd's , torson , soft lock , air lock and detroit lockers. But not to many will fit the r160 diffs.

If any one notices something wrong with what i wrote. Please correct me. I hope this helps you out .

YouTube · Post by **El_Freddo** » Wed Mar 16, 2011 7:48 pm

Both do the same thing - just differently. An LSD is just that - a limited slip diff. The three variations of that are clutch (CLSD), viscous (VLSD) and torsen - don't know much about this one...
Clutch ones are in need of regular maintenance to keep them operating well - otherwise they wear out like a clutch plate does, which means they're effectively an open diff at this stage. Wind one of these up really tight and you'll hear them in carparks!
Viscous LSD's use the heating of the oil to "bind" the diff I think. I don't know a lot about these other than the oil heating.
Torsen LSDs are mechanical and thus relatively maintenance free other than the regular oil changes.

On the road they won't bind up unless you're pushing it really hard.

I'm sure someone will be able to enlighten you more on the differences of the types of LSDs and their operation/best application.

Cheers

Bennie

justin35 · Post by **justin35** » Wed Mar 16, 2011 8:36 pm

his subi would easily spin a rear wheel on a tight turn up his drive way at very low speed (similar sought of action from a locka)if he had given it a hard time just before hand..warming up the dif,but as far as binding up theres no chance of any damage as it will still slip if to much force is applied so you wont break any cvs as such(well he never did and he was rough on it)

dvllib · Post by **dvllib** » Thu Mar 17, 2011 2:56 pm

thanks that does help. i guess the one i choose will be the first one i find for the best money then. all the diffs iv been lookin at have been between 450 to 500. should i be able to find one cheaper than that

Post by **Alex** » Thu Mar 17, 2011 3:11 pm

my clsd in my wagon worked a treat. Helped me get through some pretty hairy terrain where other open diffed cars did the old see-saw.

it was thrashed and abused by mattims before me, he drowned it, belted it pretty much just trashed it.

I put good oil in it and that was all. Still worked a treat, a lsd will never be as good as a locked diff off-road.

For your patricular situation id go for a vlsd, purely due to road driving. Just remember that the oil in a vlsd thickens up as you spin a wheel which is actually what helps lock up the diff sumwhat.

alex

dvllib · Post by **dvllib** » Thu Mar 17, 2011 5:08 pm

For your patricular situation id go for a vlsd, purely due to road driving. Just remember that the oil in a vlsd thickens up as you spin a wheel which is actually what helps lock up the diff sumwhat.

alex

so anyone no where i can get one for a decent price in vic

ScubyRoo · Post by **ScubyRoo** » Sat Mar 19, 2011 7:16 pm

watch the wrx forums, they pop up from time to time for around 250 to 450 dollars. Just ask what drive shafts they need, i.e. if it's male stubs or not... my old lsd was female, so just remember to ask.

dvllib · Post by **dvllib** » Sat Mar 19, 2011 8:23 pm

ScubyRoo wrote:watch the wrx forums, they pop up from time to time for around 250 to 450 dollars. Just ask what drive shafts they need, i.e. if it's male stubs or not... my old lsd was female, so just remember to ask.

thanks will do