Newbie here. I've been searching around and I can't find a thread with the exact same problem as mine so hopefully this is the correct place to post it. So I just purchased a 2002 WRX with 100k miles on it. It is stock apart from rims. It also had a replacement clutch installed right before I got it.
I've been driving it for about a week now and the problem I'm having is that when I am starting off in first gear, it feels like the clutch almost isn't engaging all the way, it revs up quickly, and makes a grinding/scraping noise (almost sounds like a zipper) but it doesn't accelerate much at all. The problem continues throughout the gears and the only way I've found to fix it is to drop back down into 3rd or 2nd and then it usually is fine until I come to a stop again. If I start in first VERY slowly and then shift into second equally as slow the noise doesn't seem to happen at all. A friend of mine who works for a shop said it sounds like the clutch was installed wrong and that's what I am hoping it is.
Any and all advice or help is greatly appreciated!