LSD swap question, FD lsd into my TII housing
03-15-04, 10:29 AM
#1
LSD swap question, FD lsd into my TII housing
a buddy of mine has a very low mileage FD differential (10k miles) and he will sell it to me pretty cheap (~100 bucks) i currently have a series4 TII clutchtype diff in my car, but the clutch packs are worn.
my question is, is the FD torsen diff a straightup swap with the TII diffs?
my question is, is the FD torsen diff a straightup swap with the TII diffs?
03-15-04, 12:38 PM
#6
Yes, it is a direct swap. I made a writeup on swapping a torsen LSD from a miata into a N/A Diff when I did it. Complete with pictures and all.:
https://www.rx7club.com/showthread.p...hreadid=229115
Youll need to properly adjust the backlash, and those processes are at the end of chapter 9 of the FSM. Youll ideally want a differential stand, and youll need a dial indicator.
On a side note though, why do you want to do this? You realize FD guys swap in S4 turbo clutch type LSDs, because they are stronger, and lock up just as fast. (unless worn, of course).Although if you have a S5 viscous LSD.. it would be a worthwhile swap.
https://www.rx7club.com/showthread.p...hreadid=229115
Youll need to properly adjust the backlash, and those processes are at the end of chapter 9 of the FSM. Youll ideally want a differential stand, and youll need a dial indicator.
On a side note though, why do you want to do this? You realize FD guys swap in S4 turbo clutch type LSDs, because they are stronger, and lock up just as fast. (unless worn, of course).Although if you have a S5 viscous LSD.. it would be a worthwhile swap.
Last edited by Rxmfn7; 03-15-04 at 12:58 PM.
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03-15-04, 12:49 PM
#9
rxm is right...FD guys swap in S4 TII LSDs for drag racing cuz they have a better lockup rate and hold more power. Are you using this car for drag racing? or normal driving? The viscous LSD's are way better for use in road racing, so depending on what you want to use the car for, the fd LSD might not be the best choice...good luck with the swap though!
neil
neil
03-15-04, 02:34 PM
#10
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Originally posted by onefastrx7turbo
rxm is right...FD guys swap in S4 TII LSDs for drag racing cuz they have a better lockup rate and hold more power.
rxm is right...FD guys swap in S4 TII LSDs for drag racing cuz they have a better lockup rate and hold more power.
The torsen differential has the fastest lock up times because its actuation is fundamentally different from a clutch types, reacting before slip even occurs.
And why is viscous best for road racing? It reacts the slowest of the three types mentioned. IMO, best for road racing goes to torsen or clutch type.
03-15-04, 04:06 PM
#11
Originally posted by Rxmfn7
Yes, it is a direct swap. I made a writeup on swapping a torsen LSD from a miata into a N/A Diff when I did it. Complete with pictures and all.:
https://www.rx7club.com/showthread.p...hreadid=229115
Youll need to properly adjust the backlash, and those processes are at the end of chapter 9 of the FSM. Youll ideally want a differential stand, and youll need a dial indicator.
On a side note though, why do you want to do this? You realize FD guys swap in S4 turbo clutch type LSDs, because they are stronger, and lock up just as fast. (unless worn, of course).Although if you have a S5 viscous LSD.. it would be a worthwhile swap.
Yes, it is a direct swap. I made a writeup on swapping a torsen LSD from a miata into a N/A Diff when I did it. Complete with pictures and all.:
https://www.rx7club.com/showthread.p...hreadid=229115
Youll need to properly adjust the backlash, and those processes are at the end of chapter 9 of the FSM. Youll ideally want a differential stand, and youll need a dial indicator.
On a side note though, why do you want to do this? You realize FD guys swap in S4 turbo clutch type LSDs, because they are stronger, and lock up just as fast. (unless worn, of course).Although if you have a S5 viscous LSD.. it would be a worthwhile swap.
03-15-04, 04:19 PM
#12
Originally posted by jacobcartmill
i suppose i could just get some new clutch packs for my S4 diff.. the diff still locks, but i dont know about the condition of it (unknown miles, etc) it still locks up though.
i suppose i could just get some new clutch packs for my S4 diff.. the diff still locks, but i dont know about the condition of it (unknown miles, etc) it still locks up though.
03-15-04, 06:38 PM
#13
Lives on the Forum
Stock Zenki turbo LSD is most likely worn and needs to be rebuilt to work properly. At the very least, you can get oversized plates for a more aggressive lock. You're looking at $300 just in parts!
Ni5mo180SX is right - Torsen reacts faster, typically. The clutch-type LSD doesn't really do anything until it hits it's lock-up point, which is typically more slippage than a Torsen.
http://fc3spro.com/TECH/MODS/DT/lsd.htm
-Ted
Ni5mo180SX is right - Torsen reacts faster, typically. The clutch-type LSD doesn't really do anything until it hits it's lock-up point, which is typically more slippage than a Torsen.
http://fc3spro.com/TECH/MODS/DT/lsd.htm
-Ted
