No LSD on my car. Need a recommended source >>
#1
Nordschleife Master
Thread Starter
No LSD on my car. Need a recommended source >>
Yep, no LSD. Want LSD...eerrrr, Limited Slip that is.
I know Quaife makes one ($$). However, any other recommedations? Porsche used part perhaps? And, is this a p.i.t.a. to perform?
Chad
I know Quaife makes one ($$). However, any other recommedations? Porsche used part perhaps? And, is this a p.i.t.a. to perform?
Chad
#5
Addict
Rennlist Member
Rennlist Member
I really don't think you can compare traction control or PSM with LSD. They help you make the most of the traction you have. LSD gives you more traction. You are right about the price. A good LSD will set you back about $2500 installed.
Jim
Jim
#7
Drifting
Do you need.......???
Absolutely!
Trac or PSM will brake the slipping wheel with an absolute minimum of slippage, probably less than 1/4 turn.
Even worse, they may interact adversely.
Again, tell me why an LSD is better??
If a wheel is slipping, and Trac/PSM moderately brakes only that wheel to prevent it for doing so, the engine can continue to "build" torque. How can LSD do better than that?
Absolutely!
Trac or PSM will brake the slipping wheel with an absolute minimum of slippage, probably less than 1/4 turn.
Even worse, they may interact adversely.
Again, tell me why an LSD is better??
If a wheel is slipping, and Trac/PSM moderately brakes only that wheel to prevent it for doing so, the engine can continue to "build" torque. How can LSD do better than that?
Trending Topics
#8
Addict
Rennlist Member
Rennlist Member
WWest,
Let me clarify my comments. If you are driving in wet streets or in snow I'm pretty sure that traction control or PSM would be better/safer. If you are trying to go fast, hopefully on the track, would you rather have your bakes keeping one wheel from slipping or would you rather have torque being spread between both rear tires. If your goal is to come out of a corner faster then clearly LSD is better. If you have a very high horsepower car (F1) you would want both LSD to get power to both wheels and traction control to allow you to mash the pedal to the floor without lighting up the tires. We don't have to worry about that too much with our cars. The downside to LSD is that it can induce understeer as you leave a corner.
Jim
Let me clarify my comments. If you are driving in wet streets or in snow I'm pretty sure that traction control or PSM would be better/safer. If you are trying to go fast, hopefully on the track, would you rather have your bakes keeping one wheel from slipping or would you rather have torque being spread between both rear tires. If your goal is to come out of a corner faster then clearly LSD is better. If you have a very high horsepower car (F1) you would want both LSD to get power to both wheels and traction control to allow you to mash the pedal to the floor without lighting up the tires. We don't have to worry about that too much with our cars. The downside to LSD is that it can induce understeer as you leave a corner.
Jim
#10
Addict
Rennlist Member
Rennlist Member
wwest,
I agree that putting an aftermarket LSD in a PSM/Trac car would not work. I don't know how the 40th anv system with PSM and LSD functions.
Actually I don't think PSM/Trac have any place in a sports car but that's just my opinion.
Jim
I agree that putting an aftermarket LSD in a PSM/Trac car would not work. I don't know how the 40th anv system with PSM and LSD functions.
Actually I don't think PSM/Trac have any place in a sports car but that's just my opinion.
Jim
#11
I agree with the latter comments. I odly enough have the 99 with both lsd and traction control. In the wet the traction control is actually useful, only because I have bfg's which are super sticky dry but crap in the wet. Otherwise I turn it off when driving hard. PSM works with an open differential just Like c43 amg's. Many people love psm and the like but I can't stand anything that is that invasive. I bought my 99 c2 specifically for the performance lsd c2 coupe lighter. I only wish it didn't have the sunroof for weight, but I like it occasionally-so whatever.
#12
Pro
Originally Posted by wwest
Do you need.......???
Absolutely!
Trac or PSM will brake the slipping wheel with an absolute minimum of slippage, probably less than 1/4 turn.
Even worse, they may interact adversely.
Again, tell me why an LSD is better??
If a wheel is slipping, and Trac/PSM moderately brakes only that wheel to prevent it for doing so, the engine can continue to "build" torque. How can LSD do better than that?
Absolutely!
Trac or PSM will brake the slipping wheel with an absolute minimum of slippage, probably less than 1/4 turn.
Even worse, they may interact adversely.
Again, tell me why an LSD is better??
If a wheel is slipping, and Trac/PSM moderately brakes only that wheel to prevent it for doing so, the engine can continue to "build" torque. How can LSD do better than that?
Yes, I think some LSD systems shift torque based on slippage, which is why I think they had to tweak the sensitivity of the Trac system on the 40th cars to get the two to work in concert.
Given that my car is my daily driver in all 4 seasons, I wouldn't trade my PSM for LSD, but I'd sure love to add LSD to the mix.
#13
Originally Posted by JimB
wwest,
I agree that putting an aftermarket LSD in a PSM/Trac car would not work. I don't know how the 40th anv system with PSM and LSD functions.
Actually I don't think PSM/Trac have any place in a sports car but that's just my opinion.
Jim
I agree that putting an aftermarket LSD in a PSM/Trac car would not work. I don't know how the 40th anv system with PSM and LSD functions.
Actually I don't think PSM/Trac have any place in a sports car but that's just my opinion.
Jim
#15
Nordschleife Master
Thread Starter
I think my 996 doesn't have either. There are no switches in the cockpit to turn the trac. control off. And...I checked the rear (tires off the ground) no LSD.
And...obviously, because of the year no stability control. So, I would like to install a LSD fro track use. Thoughts?
C.
And...obviously, because of the year no stability control. So, I would like to install a LSD fro track use. Thoughts?
C.