Do SRT-6's have limited slip differential?
 

No idea what the hell it is but was asked the question of a potential buyer. Any advice will be appreciated.

Re: Do SRT-6's have limited slip differential?
 

i'll try reading below next time...thanks.

Re: Do SRT-6's have limited slip differential?
 

An LSD, or Limited Slip Differential is a type of open differential with clutches that allow a free-spinning wheel to divert a percentage of its torque to the opposing wheel which has traction. This allows both tires to more effectively grip the road in high torque, low-speed turn situations (or even burn-outs :p).
I believe the Crossfire SRT-6 comes equipped with an LSD, as the vehicle it is based on, the Mercedes-Benz SLK32 AMG, came equipped with one.

http://auto.howstuffworks.com/differential4.htm. Follow that link for more information.

Re: Do SRT-6's have limited slip differential?
 

I thought the traction control worked as a 'limited slip' - if you jack the car up, both wheels off the ground in rear, and can spin one of the wheels by hand when the car is in 'park' or 1st gear (manual) with the parking brake off, then it does not have it - (usually when you spin the wheel, the one on the other side will go the other direction if it is an open differential). On my SRT6 I know it only spins one tire when the traction control is turned off - up to a point when the electronic nannies that you can not turn off takes over - then it seems to just go to the other side spinning -

Re: Do SRT-6's have limited slip differential?
 

Look into this thread - appears there may be an issue:

https://www.crossfireforum.org/forum...181#post116181

Re: Do SRT-6's have limited slip differential?
 

That's exactly what I thought...they are claiming a limited slip based on the traction control - and the rear end is wide open. I figured that the other day when I was exiting a 15 mph corner and the inside tire spun real easy before the electronics could catch up - that same corner in my Demon 340 is rewarded with a nice 'posi' slide! I was hoping to run the SRT at the drags with the traction control off, but it will be real tough to get it out of the hole with only one tire putting down the power...

Re: Do SRT-6's have limited slip differential?
 

The SRT6 does have an LSD but requires load to engage the clutches so, the wheel spin test doesn't necessarily work unless you get it spinning fast enough for it to feel a load. Go to dragtimes.com and the fastest two times posted, are my friends SRT6 coupe and my SRT6 roadster, with 1.8 and 1.9 60 foot launch, which would never be possible with an open diff and street tires.

Re: Do SRT-6's have limited slip differential?
 

The SRT-6 may not have a true locking LSD, but it will put the power down through both wheels at will.
I can get mine sideways any time I feel like it with just a tap of the gas pedal. Ive only felt it slip the inside tire around a turn a couple times, usually when not meaning too, but if I add just a little more pedal, she breaks both tires loose in a hurry. ;)

BTW...I'm number 3 at dragtimes.com and everytime I launched the car it just hooked up and took off with consistant 1.8 60' times.
That would never be possible if it were just putting the power down with one tire, street tires no less!
My worst 60' of the day was a 1.97 :D

Re: Do SRT-6's have limited slip differential?
 

You guys rock - I'm glad to hear that...when I was in High School my Demon ran mid 13's with 3.55 open rear, so it was a lot of finesse to get it to hook - fixed all that once I put in a Sure-grip. I was not looking forward to dealing with that again! The track opens up here March 10th for test & tune-I am anxious to see how the srt does - our car only has 2,000 miles, but the tires are the originals (October, '04 build date) and are pretty hard - with the traction control off I can roll into the throttle in first and it will break the tires loose on the 1-2 shift and haze them from there until the 2-3 shift...

Re: Do SRT-6's have limited slip differential?
 

It does not have a true LSD. That's why you see all the C32 and SLK32 guys dropping in LSD's.

And eracer, auto's = great launches.

Re: Do SRT-6's have limited slip differential?
 

I don't think an LSD is needed in this car, when pushing it in the turns, I've never had it open up the inside wheel on me, it either hooks around the turn like its on rails, or it goes into a nice long fish tail around the turn. :D LOL.

Not only that, but big fat, rear wheel drive Michelins help out a lot too. ;)
Coming from the SRT-4...I had one hell of a grin on my face the day at the track with the SRT-6...I've never owned a car that could put me in the seat that hard in my life. :D

Re: Do SRT-6's have limited slip differential?
 

Has anybody tried doing what DmnBoy suggested? Just jack up the rear of your car, spin one wheel while the car is in neutral, and look to see if the other wheel is spinning in the same direction? If the other wheel is spinning in the opposite direction, then you don't have a true limited slip.
At least that's the way we always checked em.
Bullseye's report on the C32 and SLK's installing LSD's should pertain to the Crossfire.

Re: Do SRT-6's have limited slip differential?
 

Engineering specs from DC specifically state the car has an open differential.

Re: Do SRT-6's have limited slip differential?
 

so if you install a LSD, the car should get quicker just by avoiding the brakes (traction control) applying to the tire with less traction...sounds like free HP to me!...what is a LSD running for these days? $$

Re: Do SRT-6's have limited slip differential?
 

Like $1,800 for the LSD and $1,200 for the install. Mercs are NOT cheap.

Re: Do SRT-6's have limited slip differential?
 

The c32 and slk32 guys install the LSD from quaife, but I have searched their site and have not found a product for any of these cars... I don't any of a forum members ever upgraded or modified their differential and wrote about it...

Re: Do SRT-6's have limited slip differential?
 

That has got me very curious-I'm going to keep looking into this...the electronic nannys are nice in the wet etc, but I would like to know what a SRT6 would do without anything holding it back...

Re: Do SRT-6's have limited slip differential?
 

Our "Electronic Nanny" works in a very unusual way, it reduces the power to the wheel that is spinning to match the rotational speed to the gripping wheel... So, basically it reduces the power to the rear wheels via a clutch mechanism.

Re: Do SRT-6's have limited slip differential?
 

? ? ?

I figured it applied brakes to a %, then if that was not enough, it would reduce output of the motor hp via timing, throttle position etc. all the while knowing the front wheel speed to note excessive rear wheel spin-does this clutch mechanism you mention exist in the rear end? That would make sense if it was like an 'air locker' used by 4x4's, and the clutch locked the rear wheels when needed, but that sounds too simple-it seems they mention in the manual how the ESP utilizes the braking system to do it's job...I dunno...

Re: Do SRT-6's have limited slip differential?
 

Yes the rear end mimics an LSD, but why spend money on a true one, when the car runs 1.8 short times with the stock rear end. For 350 hp, you can't get much better than that on street tires. In my opinion, a true LSD might get you a slightly lower 1.8 short time, which will not equate to a noticeable quicker ET. So why waste the money. If it was running 2.1 or higher short times, then yes an LSD would greatly benefit you, but the only way it runs those short times is with the all season or crappy tires.