Reaching limits of TorSen LSD??
#23
Mostly auto-x/track days (road course) but I'm sure i'll make it out to the strip a few times and as of now I'm unsure of my power goals. I dont expect I would want anymore than 300 whp and I'm aware this diff can support that much power, I'm more concerned with the ability to swap to a cluch based diff with those axles if I desired in the future as I have heard they are superior in every way excpt possibly for auto-x and as my power levels go up I'm sure I will have less urge to auto-x.
A question I have also have about the torsen that I have never seen addressed is under a launch/burnout, will it leave 1 or 2 tiremarks? I realize it's a LSD but from what I've read it sounds like it only really does anything if youre in a corner.
Thanks
A question I have also have about the torsen that I have never seen addressed is under a launch/burnout, will it leave 1 or 2 tiremarks? I realize it's a LSD but from what I've read it sounds like it only really does anything if youre in a corner.
Thanks
#28
Elite Member
Thread Starter
iTrader: (12)
Join Date: Sep 2007
Location: Charlotte, NC
Posts: 6,850
Total Cats: 71
Mostly auto-x/track days (road course) but I'm sure i'll make it out to the strip a few times and as of now I'm unsure of my power goals. I dont expect I would want anymore than 300 whp and I'm aware this diff can support that much power, I'm more concerned with the ability to swap to a cluch based diff with those axles if I desired in the future as I have heard they are superior in every way excpt possibly for auto-x and as my power levels go up I'm sure I will have less urge to auto-x.
A question I have also have about the torsen that I have never seen addressed is under a launch/burnout, will it leave 1 or 2 tiremarks? I realize it's a LSD but from what I've read it sounds like it only really does anything if youre in a corner.
Thanks
A question I have also have about the torsen that I have never seen addressed is under a launch/burnout, will it leave 1 or 2 tiremarks? I realize it's a LSD but from what I've read it sounds like it only really does anything if youre in a corner.
Thanks
My issue with the Torsen was only exposed with the addition of Kuho V710s being used at lower speeds as I am exiting a corner in 2nd gear. For you, I'd say just get either a 3.9 or a 3.6 gear set for the rearend and do what you're going to do. For now, for me, I'll be swapping to a tubular front sway bar, playing with the settings on the rear bar and adding downforce as those steps are much easier (and cheaper) than spending $1400-$200 on an aftermarket unit.
#29
Elite Member
Thread Starter
iTrader: (12)
Join Date: Sep 2007
Location: Charlotte, NC
Posts: 6,850
Total Cats: 71
Does it feel like you're getting wheel hop under hard braking/trail braking? That's my other problem, I sometimes feel a bouncing/hopping sensation when trail braking, but I've been attributing this to me getting rear wheel lockup...but I'll be interested to get your opinion if the diff has anything to do with it.
#30
Tour de Franzia
iTrader: (6)
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
Does it feel like you're getting wheel hop under hard braking/trail braking? That's my other problem, I sometimes feel a bouncing/hopping sensation when trail braking, but I've been attributing this to me getting rear wheel lockup...but I'll be interested to get your opinion if the diff has anything to do with it.
In my car the inside wheel lifts up, stops, and the tach turns half rpm...lol. On curbing at the track the inside tire goes nuts and smokes too. My car was so flimsy that it was picking up the front, inside wheel on cambered corner exit in 4th gear, hopefully the door bars fixed that too. I'm putting a stock sway bar in or possibly removing it all together.
#31
Elite Member
Thread Starter
iTrader: (12)
Join Date: Sep 2007
Location: Charlotte, NC
Posts: 6,850
Total Cats: 71
edit: misread your post. Not sure about skipping/hopping on braking, my car just unloads the inside wheel.
In my car the inside wheel lifts up, stops, and the tach turns half rpm...lol. On curbing at the track the inside tire goes nuts and smokes too. My car was so flimsy that it was picking up the front, inside wheel on cambered corner exit in 4th gear, hopefully the door bars fixed that too. I'm putting a stock sway bar in or possibly removing it all together.
In my car the inside wheel lifts up, stops, and the tach turns half rpm...lol. On curbing at the track the inside tire goes nuts and smokes too. My car was so flimsy that it was picking up the front, inside wheel on cambered corner exit in 4th gear, hopefully the door bars fixed that too. I'm putting a stock sway bar in or possibly removing it all together.
I tried raising the car to increase droop as well as disconnecting the sway bar, but neither yielded much change. My next step is to see what I can do to really plant the rear wheels down.
#34
Supporting Vendor
iTrader: (33)
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
Does the AP1 have a different Torsen than the MSM? I had just assumed they were the same, but have no knowledge or info to back that up. The AP1 I believe is preloaded. Is the MSM's preloaded?
#38
Torsens are designed with different characteristics for different cars. Having and AP1 and few Miatae, I've driven the early type I, later type II and Tochigi-Fuji diffs, they all behave a bit different. The AP1 diff seems to have a higher locking ratio or lower slip threshold (locks sooner) than the Miata diffs but that's SOTP, no numbers or factual data to share.
__________________