Lsd Q
Do we know what kind of LSD will be used?
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Tochigi Fuji LSD, i will see what i can find
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thispage shows one of their lsd but i dont know if it is the one in the 8. nissan owned part of the company at one point but has sold its interest to someone called GKN.
this page inmplies that it is /was going to be used in the focus svt but i dont have confirmation on that. edit: i couldn't find their home page |
I also did a search, and only found that page too. Well a clutch type has its advantages, but I gotta say I'm holding out hope for a mechanicle type.
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TBR?
Anyone know what the torque bias ratio is?
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Hi InfinitePat, MikeW,
The Tochigi Fuji LSD in the RX-8 is similar to the one used in the Mazdaspeed Protege. It is supposed to provide "highly-improved handling" and was designed for sporty cars. It is a conical ring torsen type (torque sensing), not the Viscous coupling lock type (speed sensing) which I believe MikeW prefers. ;) From Mazda: "The sports-dedicated LSD installed in the RX-7 had a high TBR at 2.6 - 3.0 and was designed for exceptionally skilled drivers. For the RX-8, Mazda developed a torque-sensing Super LSD to support enjoyable and safe driving over a wider range of conditions, from everyday maneuvering to forceful driving-at-the-limit. Super LSD has a low TBR of 2.0, which assures predictably smooth vehicle behavior during fast cornering and on low friction road surfaces, and improves stability during the off-the-line acceleration and straight-running". Mazda sports cars have mainly used Torsens. The Mazdaspeed Protege uses a torsen from Tochigi Fuji also, RX-7s used torsens, Miatas used to use the cheaper viscous type from 1990 - 1993 but had the more effective torsens as an option after 1994. The RX-8s torsen LSD will work great with the stability control offered in the "Sports package" since it can apply braking on one or more wheels. Interestingly enough GKN (the German maker of the Viscolock that MikeW likes) spent about 40 million US to acquire Tochigi Fuji. Brian |
Torsen LSDs are the ones that don't work when you have one rear tire up in the air, huh? Fiddlesticks... no curb-hopping for me when I go to the track. :p
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yeah, 3 wheeling is not advised with the torsen. However they are also the kind you dont need to replace every 50K miles.
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Idunno, my Corolla's clutch type LSD has 167,000 miles on it and still works well. :)
Still a Torsen is a whole lot better than nothing (which is what you get in most cars these days). :) |
TBR
That's a shame that it is still so high.
I could live with a TBR of 1.5:1, but not 2:1 :( |
Originally posted by BryanH Idunno, my Corolla's clutch type LSD has 167,000 miles on it and still works well. :) Still a Torsen is a whole lot better than nothing (which is what you get in most cars these days). :) |
To all that are new to this forum..... if you have ?s ask Buger.
He is the rx8forum Encylopedia :D :D :D ! |
Originally posted by babylou With 167k mi that clutch type LSD in the Corolla is now acting as an open diff because the clutch plates are surely worn out. |
I know a girl with 158K miles on the original clutch in her probe. She takes great pride in this. I'm not so impressed. All it means is the car has never been raced, driven hard, or generaly enjoyed.
I suspect the same sort of thing in your corola. If the LSD is never having to compensate for wheelspin, its never going to wear out. Anyone who could get 150K out of either the clutch, or a clutch type LSD on an rx8, would not be enjoying the rx8 like he should. |
You may very well be correct. I got the car with 163k miles on it so the previous owners might have babied it. Although the tranny is a little finicky... that certainly wasn't babied. :)
I have 75,000 miles on my MR2's clutch right now, and I'm quite surprised it's lasted this long. I used to do lots of drag-race launches with it (poorly designed Solo2 course starts, ack!). |
I just replaced the original clutch on my MX-3 about a month ago, it lasted 248,500km (154,410 miles), I was hopping it was going to last until I got my rx8.
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The clutch in my Z28 is at 98k, I'm so hoping it gets me into the summer so I don't have to worry about replacing it before the RX-8 hits the dealer. Now I have to stop treating the car like a sports car so it gets me through until then without costing me tons of money.
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I once had a 9-month old clutch delaminate and shatter in my RX-7. That was the shortest clutch lifespan I'd ever heard of on a street car. Learned an expensive lesson, though - get the good stuff the first time 'round.:D
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