Grinding in 2nd during cold starts - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

TurDz · 01-15-2005, 10:13 PM

Well, after realizing Redline Heavy Shockproof was a little too thick for my tranny (best when the tranny is very hot, such at constant shifting on the track, etc), I changed to good ol' MT-90.

Problem is, for about a few months now, I sometimes get grinding during the first few minutes after startup. Basically, I depress the clutch pedal, shift straight down to 2nd and then there's grinding. After it happens once, it doesn't happen again.

After the car is fully warm, there isn't a problem whatsoever, and it's very, very smooth. I think when I warm the car up very long (1-2 minutes), it's a bit smoother too with less chance of grinding (according to the feel of 1->2).

Anyone know what's causing this? what I have to do right now is very gently slide the shifter into 2nd, and if there is any resistance at all, I just put it into neutral, the then move it back into 2nd. I'm surprised a lot of the time that I can catch it before it grinds. A way I can avoid the grind also is to just shift from 1st, to neutral, and to 2nd in one quick motion, all in one clutch depression. By the time I do it 5-6 times during a launch, everything is fine.

i'd appreciate any help. my car is a 98 so that's why I'm concerned. It only started happening recently...particularly when I put the heavy shockproof gear oil in. It's already out though (most of it anyway) and MT-90 is in now, so I'm a bit concerned.

01-15-2005, 10:13 PM	#1
TurDz Nissanaholic! Join Date: May 2003 Location: Bay Area, CA Posts: 1,618 Trader Rating: (0) Feedback Score: 0 reviews	Grinding in 2nd during cold starts Well, after realizing Redline Heavy Shockproof was a little too thick for my tranny (best when the tranny is very hot, such at constant shifting on the track, etc), I changed to good ol' MT-90. Problem is, for about a few months now, I sometimes get grinding during the first few minutes after startup. Basically, I depress the clutch pedal, shift straight down to 2nd and then there's grinding. After it happens once, it doesn't happen again. After the car is fully warm, there isn't a problem whatsoever, and it's very, very smooth. I think when I warm the car up very long (1-2 minutes), it's a bit smoother too with less chance of grinding (according to the feel of 1->2). Anyone know what's causing this? what I have to do right now is very gently slide the shifter into 2nd, and if there is any resistance at all, I just put it into neutral, the then move it back into 2nd. I'm surprised a lot of the time that I can catch it before it grinds. A way I can avoid the grind also is to just shift from 1st, to neutral, and to 2nd in one quick motion, all in one clutch depression. By the time I do it 5-6 times during a launch, everything is fine. i'd appreciate any help. my car is a 98 so that's why I'm concerned. It only started happening recently...particularly when I put the heavy shockproof gear oil in. It's already out though (most of it anyway) and MT-90 is in now, so I'm a bit concerned.