I've posted this before but never got any solutions. Lets try again. My S has a strange slipping feeling when starting from 0 after it has been running for a while. The feeling is similar to the feeling you get when slipping on rocks or loose gravel.
1. It only does it when the car has warmed up to three bars.
2. It does it in whichever gear I start in, 1st or 2nd or reverse.
3. It does it much worse when going up hill
4. Although it happens on 90% of the starts it does not happen every time (but it certainly happens during every time the car is driven).
5. It does it both while the clutch is in and out (I would imagine that rules out clutch spotting).
6. I have 4.77 gears (possibly a cause yes/no?)
7. I've been lazy and haven't changed the Diff. Fluid since the gears were installed.
8. It's been doing it for a long time and hasn't gotten any better or worse
What do you guys think? Throw some ideas out there for me. I was thinking it could be something to do with bearings or something.

 

How do you slip when clutch is in? Not sure what you mean here.

 

That threw me off too ...

 

Why are you starting off in 2nd. This can be very hard on the clutch. As for the rest of your questions, they lack clarity. Maybe reword it and explain a bit better and answers will come.

 

1. It only does it when the car has warmed up to three bars.
2. It does it in whichever gear I start in, 1st or 2nd or reverse.
3. It does it much worse when going up hill
4. Although it happens on 90% of the starts it does not happen every time (but it certainly happens during every time the car is driven).
5. It does it both while the clutch is in and out (I would imagine that rules out clutch spotting).
6. I have 4.77 gears (possibly a cause yes/no?)
7. I've been lazy and haven't changed the Diff. Fluid since the gears were installed.
8. It's been doing it for a long time and hasn't gotten any better or worse

sorry, let me clear it up a little.

2. I don't really ever start in 2nd, but I did try it to see if the problem only happened in first to see if it was just the gear. The problem does happen in 2nd too.
5. As I am letting the clutch out and giving it gas it does it. It also continues after the clutch is fully released. Usually up to about 10-12 mph.
hopefully that clears it up a little, any other questions.... fire away. I need to fix this

 

I'm thinking that your clutch is done or your pedal adjustment is waaaaay off or your clutch fluid is in need of changing. I'd put the most emphasis on the first one.
If it's slipping moving off in 1st, then it should do it even worse in 2nd. Moving off on a slope will aggravate a slipping clutch.
Actually, a 4.77 rear end should help the clutch work easier, so that isn't the problem but change the fluid anyway if you've got more than a couple thou on it since putting them in.
Do the ultimate test: Get it rolling in 3rd gear at about 4000 rpm, clutch fully released and floor it till well into VTEC. If the clutch is really bad, you'll notice it now. If this doesn't slip, then check out the last two things I wrote.

 

If it was the clutch would it keep doing it even after the clutch was released? The problem does not happen at speeds over 10-12 mph.

 

Now you're really confusing me. If it doesn't do it after 12 mph, then my "test" will prove this to be so. Some of the information you are giving are conflicting. You're going to start to lose people fairly soon. I'm beginning to think it might have something to do with your technique. You better provide details of exactly what you do when you move off from a dead stop ....................... clutch movement, where does it catch, throttle movement, what rpm, etc?

 

There really isn't much more I can say. It's not my technique because I've had several other people drive it to try and figure out the problem and it does the same thing to them. The problem first started about a month after I installed the gears (about 9 months ago). I brought it back to the shop that installed the gears and they drove it. They said they could certainly feel what I was talking about but they said that it was not the gears. "The gears are solid" they said. They also said that they did not know what it was. I also had a couple of my "car" friends drive it and they did not know what it was. One of them thought that maybe it was the limited slip. I personally don't even know if we have that.

About all I can say is that it feels just like losing traction on loose gravel. After work today I will try starting in 3rd and taking it to V-Tech and I'll let you know the findings. What do you think about the other theories? (bearings, limited slip, new gears) Please stick with me for awhile and keep asking questions. I'm not trying to confuse people or anything, I just want this issue to be solved.

 

Although this could still be a clutch issue, it is starting to sound like it could be something else. Yes, we do have a Limited Slip Diff (Torsen), but on dry, even ground, even a car with no LSD, should still move off fairly normally. But one can't rule out the diff (and rear drivetrain) as the source of the problem.
Do that "test" I spoke of and see what happens. I think you need to have the car driven by someone who is also very mechanical and can pinpoint the problem better. Having some guys drive it who can only tell you "there's something wrong" will not help you much.