S2000 Under The Hood S2000 Technical and Mechanical discussions.

Second gear grind

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Old 09-09-2007, 05:46 AM
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Default Second gear grind

My 2002 always needs a fully depress the clutch pedal to avoid a grind from first into second gear at any engine speed above 4000 rpm. But now I am having trouble avoiding the grind when I do a first to second shift after winding out first to 8 or 9 k. I am going to change out the tranny fluid with GM synchro FM, but I was wondering if any of you have experienced the grind to this degree and if a fluid change helped at all. If not, what did you do to solve the problem?
Old 09-09-2007, 06:51 AM
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Clutch fluid change, and clutch rod adjustment is the best easy fix.
Old 09-09-2007, 04:38 PM
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Originally Posted by Billman250,Sep 9 2007, 09:51 AM
Clutch fluid change, and clutch rod adjustment is the best easy fix.
I did them both Bill. the adjustment seems fine with a bit of play at the very top. Current fluid has about 10,000 miles on it.
Old 09-10-2007, 07:31 AM
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Change the mtf. That always helps. I would recommend the new honda mtf. The old stuff always seemed to go to crap after a couple thousand miles. As for the gm friction modified it was still garbage in my car!
Old 09-10-2007, 07:41 AM
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Originally Posted by joes sled 2000,Sep 10 2007, 10:31 AM
Change the mtf. That always helps. I would recommend the new honda mtf. The old stuff always seemed to go to crap after a couple thousand miles. As for the gm friction modified it was still garbage in my car!
Wow, no kidding. I heard great things about it. Since I already bought it, I'm going to give it a try. I can always drain it out and get the Honda stuff if the grind is still there.

Did you notice the grind more with the engine hot or cold? Mine was grinding badly after a very long drive.
Old 09-10-2007, 08:03 AM
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I recently changed to the "new" MTF, LE 607 in the differential and AMSOIL 10-30 engine oil. My initial feedback is that the whole drive train is smoother throughout the RPM range. Shifting is smoother with no grind noticed. Overall the car feels tighter going down the road. More willing to rev and smoother doing it.
Old 09-10-2007, 08:43 AM
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Originally Posted by Legal Bill,Sep 10 2007, 11:41 AM
Wow, no kidding. I heard great things about it. Since I already bought it, I'm going to give it a try. I can always drain it out and get the Honda stuff if the grind is still there.

Did you notice the grind more with the engine hot or cold? Mine was grinding badly after a very long drive.
Youre simptoms sound exactly like mine. Bad second gear grind after a long drive. The gm stuff is good for a little while and then turns to shit rather quickly atleast for me. Ive had the new honda mtf in now all summer and ive never had a grind since!
Old 09-10-2007, 09:28 AM
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Slightly off topic...what is the replacement interval for clutch fluid under the "normal" maintenance schedule? I don't have my manual with me.

Thanks!
Old 09-10-2007, 10:07 AM
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^^ everytime you replace the clutch? iono thats what im gonna do.

i usually get second gear grind when the tranny is sorta cold like i havent driven it much yet.

having a heavier shift knob helps you not feel it. haha
Old 09-10-2007, 10:19 AM
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Originally Posted by joes sled 2000,Sep 10 2007, 11:43 AM
Youre simptoms sound exactly like mine. Bad second gear grind after a long drive. The gm stuff is good for a little while and then turns to shit rather quickly atleast for me. Ive had the new honda mtf in now all summer and ive never had a grind since!
Yeah, the fact that it grinds when hot tells me the oil is doing something wrong. If it ground when cold, I'd say the oil is just too thick and not allowing the synchros to spin.


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