View Full Version : How long do aftermarket LSDs last?
How often would a Cusco MZ 2 way diff need reconditioning and what needs changing? :)
you should change the diff oil at regular intervals if its being used hard. say every 1500 miles if its being used for track. if you recon the diff every year it should last a long time. you can buy additional plates and re-furb kits to keep them up to scratch :)
for regular road/track use i change mine every 5000-7000 miles. depends how hard you are on it...
If the car was out at a drfit event three times a week then how often would it need stripping? And what wears out, just the plates? :)
imo 5-7000 miles is waaaaaaaay too long to go before changing the oil. I aim to change at the same time as engine oil or sooner if it starts feeling sloppy. Alot of people say that an annual rebuild is needed if used hard but I'm not sure how true that is. Kiki's old S13 has never had the diff rebuilt AND he doesn't change the oil very often either :eek: still locks nice though:)
where you planning on drifting 3 times a week?
Its not me, Ive a customer asking :)
ah ok, well they're typically very tough and hard wearing if you look after them, ie use the right oil and keep it fresh, aswell as bedding it in good and proper before you go thrashing it :nod:
now, in return for these golden nuggets of information, wanna sell me a rear crank seal?:D :thumbs:
Ok, thanks :)
Rear crank seals should be in stock :)
Ive got a Cusco RS 1.5way on order for our S13. I believe its more suited to track use as it doesnt loack as aggressively as the MZ, do you know if Im on the right track?
quality pun^:D
I've heard different things about which is most suited to what. the RS is definately smoother in operation than the MZ so should be less sketchy. being 1.5way would be the biggest factor in performance though, use a fairly light oil like 75/80 and you shouldn't have any problems with track use.
wanna answer my thread about the seal then? :p :)
Ok, cool :) Its answered ;)
Sorry to go on but I need some re-assurance. Can I take it that the diff Ive ordered is going to give my car substantial more traction out of corners than the standard diff withpout making the car try to go sideways all the time or will it still send the back end out when trying to lay the power down out of the twisties?
Should I ditch the Jap diff idea altogether and just go for an S15 set up instead?
SteveCarter200
16-03-2005, 09:59
Try it out and if it does make you go too sideways then sell it to me, cheap.;)
I dont think you'll have any bother with it TBH. Fully locked (i.e. welded) tend to make a car understeer unless you provoke it sideways so in theory this should be the similar with a high %age lock diff.
The diffs going to be locked under power isnt it. Thats no good for me, how am I going to accelerate out of corners properly if the diffs locking under power :indiff:
This wasnt a good idea was it. Mmmmmm, borrocks. Should have thought it through properly. :indiff: :cry:
PulsatingStar
16-03-2005, 10:26
Surely locking under power is a good thing. Otherwise its all trying to go to the one wheel and itll just be crap putting power down out of the corner. Sure it will be loads better (well it cant be worse lol) as long as you arnt trying to drift it.
Yeah but a Quiaff atb diff sends power to the wheel that can handle it best rather than simply spreading the load accross the axle equally. It should still be a hell of a lot better than the original diff though. Ill just run it and se how I get on. Might be fun :)
Am I right in thinking that the 1.5 way doesnt lock as fully as the 2 way?
Hashiriya
16-03-2005, 10:45
1.5 way locks just as hard as a 2 way on accel but only half as much on decel.....
thats what i understand but i'm sure someone will be bcak soon to correct me
SteveCarter200
16-03-2005, 10:45
The diffs going to be locked under power isnt it. Thats no good for me, how am I going to accelerate out of corners properly if the diffs locking under power :indiff:
This wasnt a good idea was it. Mmmmmm, borrocks. Should have thought it through properly. :indiff: :cry:
You could also say how can I accelerate out of corners when one wheel keeps wanting to spin up because of the crappy VLSD.;)
Surely you want the power being put on the road by both wheels?
The Cusco isnt 100% locked anyway. So you still have an element of inside wheel spinny syndrome.
I'd rather have a diff that will progressively slide out of a bend rather than just spinning one wheel up.
p.s. dont be a girl, Brenda.;):p
masaya,
Looking at the Cusco catalogue and the diagrams it seems that the 1.5 doesnt lock as hard as the 2 way but I could be wrong as Im only going ont he diagrams. Perhaps I could take you up on your translation skills and ask you to have a scan through this :thumbs:
http://www.cusco.co.jp/04ctl/lsd_pdf/lsd_rs.pdf
Steve,
Thats good to hear :) I also dont want to spin up one wheel, I want to put the power to ground most effectively and Im wondering if the diff Ive ordered might be a bit of a hindrance in doing so.
And Im not scared of going sideways, I just dont want to hunt down some mega bucks super car on a track and then struggle to keep up because Im all over the track trying to put the power down out of the corner :p
Hashiriya
16-03-2005, 11:13
ok brief translation of that page
The type RS requires 50 ~70% less initial torque to start locking:
prevents power loss and increased times can be seen on even low power vehicles
less chatter/noise
less pressure on the plates increasing durablility
flow of oil between plates has improved allowins a smooth effective action and increased oil life
The system never completely seals
The RS has a special spring setup between the pressure rings maintaining spring storke (i'm not sure what that means)
there is no friction or heat fade due to the unit not sealing closed
The spring that controls initial torque is not affected by heat maintaing a smooth consistant ride over longer periods of time
The RS has quick response.
more direct feel from the accelerator
does not slip under high power
effciently puts power to the track even with drag launches
can maintain long drifts with stability
that was quite brief as my boss keeps looking over my shoulder to see if i am doing work or not :whip:
The graph has the lsd effect/locking up the vertical axis and power across the horizontal.
It seems that the rs is a smoother feel than the MZ as under little power you have a very natural feeling diff with progressive locking all the way up to full lock
BTW bren: you sell these? how much?
Excellent, thankyou :thumbs:
Yeah we can get the full range of diffs, Ill pm you a price, cant post it in here :)
I have a 1.5 way ATS diff. I thought that it was going to be hard to drive on full throttle. But no problems at all. Still push it to tha max! ;) Car just feels way more stable, especially when sliding, easier to control when it does aswell.
Then again, this coming from a guy still running standard T25! :( Bren will be tripling my power so, don't pay any attention to what I've said. :D
roight, the way I see it is proper lsd's have an image of making cars oversteer all the time because its usually only drift folk who cotton on to the fact standard diffs lick balls. With an aftermarket LSD you WILL get more traction out of a corner than with a standard one, but only as much as the tyres and suspension will allow. Even when you go beyond the grip of the tyres you're still at an advantage as you'll find the car much much more controllable and predictable when its sliding :nod:
Even my (theoretically) evil widow maker 2way MZ will try to grip really hard in the dry, and will take a clutch kick or some fairly violent steering inputs to oversteer.
If you want further proof try to find a vid of the Yashio Factory S15 on Tsukuba, its mega fast and has a Nismo 2way LSD:)
So long as you give yourself a chance to relearn the car (its going to make it very different to drive) you'll absolutely love it, should be very stable unless you drive like a knob :nod:
Sounds good, I look forward to giving it a go :nod: :)
If you want further proof try to find a vid of the Yashio Factory S15 on Tsukuba, its mega fast and has a Nismo 2way LSD:)
:eek: :eek: :eek:
That Car Clocked like 57 sec at Tsukuba! Beat all of the cars on the tuners challenge day there I think. Correct me if I'm wrong on that last statement. Were talking about the Car with Massive Diffusers sticking out of its ass right? That thing is :thumbs: :thumbs:
:D
Hashiriya
17-03-2005, 11:50
under 1 min at tsukuba is mega fast!!!!!!!
that must be a new silvia record again then?
Possibly.. Dori Dori was driving :thumbs: You could really see the effect of the diffusers last corner, looked awesome. I have to dig up the video for the correct time, but it was 57 something for sure :) Not bad for a second hand car!
http://www.club4ag.com/faq%20and%20tech_pages/limited_slips_differential_101.htm
You might find this a useful read.
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