Awesome! I can just disconnect one link and that's it right? No need to take the whole thing out?

 

5k is probably too low. You'll bog.

 

Had a spare diff. Sold it when I stopped autocrossing the S. Never needed it. The original diff held up fine. Car was stock except for shocks, Gendron sway bar and Hoosiers. I would preload to the engagement point, tach it up, e-brake off, and dump the clutch. If you launch with wheel spin the shock to the diff isn't too severe. YMMV I moved on to B-Mod, but still run the S on street tires occasionally.

Edit: Forgot to mention, diff fluid changed yearly at about 7k miles.

 

3500 rpm clutch slip...i love my diff too much to launch the car any higher

 

I haven't gotten the best feel for how to slip the clutch for a good start on those courses with starts where not much is given up on a 4 bagger roll out. I mainly let the CDV do it’s thing with a slip at around 4,500 and modulate my left and right foot to the sound of the motor. Typically it’s just the gas peddle letting out to reduce slip to manage clutch burn. The times where I don’t launch high enough for spin, it’s usually the clutch slipping when my foot is off the peddle and I’m modulating the throttle to manage damage lol. I haven’t burned it to the point my launches get worse, run to run. When I want to spin for best launch, I pre-load the drivetrain a little by having foot on the brake and let the clutch out just a little. not really pre-load, just sets the teeth close/on each other. I rev up a few times on a rythm and on the upswing of RPMS I go to 6-6.5k typically and side step that peddle like a mofo and feather the throttle one way or another from there to manage spin. I'm getting really tired of the almost straight-away drag launch starts we have been having in my region though. One must make decisions though on how competitive you want to be. If you launch bad in my region, there goes your chance of placing well. We have a lot of good drivers that go all out. I

RS3s around 35-36psi with -2.6 camber

too much spin off the line = loose rear end for me though. Rear tires get too hot and loose grip ½ way through the run. I hate managing understeer so I try to keep my car just loose enough.

 

^RS3's losing grip from getting too hot? I struggle to get enough heat into my RS3's to actually GET grip... I look for co-drivers just so I can get more runs quicker into my RS3's to keep them hot.

 

Surface, tire compound, temperature all play a role here. Bottom line is whatever you do, don't bog so the answer is either you slow roll your start or find the lowest RPM where you can get a bit of wheel spin off the line and you're good.

 

Arizona. Low grip surface. Tight courses where push in the slow stuff wrecks ur day. Driving style trumps but I have had to spray rs3s out here.

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You could close the thread with this response, pretty much sums it all up IMO. For me when I was on RS-3's, I found that around 7k was about right to not bog it down and to keep the wheelspin to a minimum but it would vary from event to event.

I really like the clubs that make a launch useless (like a tight turn, THEN the start timer) Launches are fun but they are just too hard on the cars to be doing at every event.

 

This! There is no magical RPM/technique that works for everyone at every site. I find as big as a 3k RPM difference between our 3 local sites as to what works for me.


As far as trying to preserve the diff, I don't just dump the clutch. I let out just until the car barely moves (to load the diff), then let out completely. It has worked well for me so far.