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How to tell if you have an LSD?
Posted: Wed Sep 22, 2010 3:04 pm
by jonosx
Whats the best way to tell if you have a torsen lsd?
The NB8A i have bought supposedly has one but i am not convinced.
My previous 200sx had a very aggressive 1.5 way mechanical lsd so it may just be a case of me being used to that and the torsen not being that good.
cheers
Re: How to tell if you have an LSD?
Posted: Wed Sep 22, 2010 3:09 pm
by Jeo
Jack the rear end off the ground. Put it in neutral. Spin one of the wheels by hand. If the other spins the opposite direction you have a winner.
Re: How to tell if you have an LSD?
Posted: Wed Sep 22, 2010 3:56 pm
by sliq
Re: How to tell if you have an LSD?
Posted: Wed Sep 22, 2010 4:07 pm
by RawSouth
The best way I've heard is...
Stop your car with one of your rear wheels on a slippery surface (such as dirt on the side of the road)...
Agressive start.
If only the wheel thats NOT on the road spins... you don't have an LSD.
If both spin, you do have one!
Im not sure if Jeo's method would work with a torsen, as they act like an open diff when there is no load on it.
Re: How to tell if you have an LSD?
Posted: Wed Sep 22, 2010 4:51 pm
by GP
Im not sure if Jeo's method would work with a torsen, as they act like an open diff when there is no load on it.
Yep, An open diff will spin the opposite way. Mechanical LSD will spin the same way. Torsen I don't know
Re: How to tell if you have an LSD?
Posted: Wed Sep 22, 2010 4:52 pm
by Regie
Jeo wrote:Jack the rear end off the ground. Put it in neutral. Spin one of the wheels by hand. If the other spins the opposite direction you have a winner.
wont work with TorSen... you need load on both wheels to get them to lock up..
Re: How to tell if you have an LSD?
Posted: Thu Sep 23, 2010 5:33 pm
by pcmx5
Go down to a local winery with immaculate lawns, great food. entertainment and park as directed on the lawn nose first on a reasonable slope.
Enjoy the food, wine and entertainment while sitting around an open fire listening to the rain pour down.
Get in your car and gently select reverse.If you leave two bloody big grooves in the lawn it proves the LSD is in good order.Did for me!!
Peter.
Re: How to tell if you have an LSD?
Posted: Thu Sep 23, 2010 5:36 pm
by Jeo
Learn something every day hey.
Damn old Honda days...
Re: How to tell if you have an LSD?
Posted: Fri Sep 24, 2010 12:23 pm
by Luke
I'll just confirm the using the jacking up method with a torsen does not work. It does act like an open centre with no load on it.
Find the best way to try a torsen diff is some nice accelaration tests in the wet as you go over the white lines at traffic lights.
If you don't want to do that I also found this sort of works.
When you accelarate at full steering lock say in a car park both left and right rear wheels chirp randomly as power gets moved left and right trying to find grip. At least mine does.
Or you can just get a driveway like mine, forces my torsen to operate every time due to the silly slopes on it.
Re: How to tell if you have an LSD?
Posted: Fri Sep 24, 2010 2:07 pm
by broady
As others say, rip some skids.
Re: How to tell if you have an LSD?
Posted: Sun Sep 26, 2010 2:36 pm
by hks_kansei
http://individual.utoronto.ca/stehlik/torsen.htmlSort of off topic, but I was quite confused with just how a Torsen could work, this site seemed to explain fairly well, I'm sure it leaves out a lot of the bits related to cars specifically, but it helped me know the rough concept of how they work.
Lego rocks, it's taught me so much over the years!