S2000 Under The Hood S2000 Technical and Mechanical discussions.

1st to 2nd grind MY04

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Old 11-17-2015, 06:22 AM
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My clutch has been bled many times. I have even swapped in a brand new AP1 slave cylinder. I have found it pretty common for the 1-2 shift on several S2000's to slightly grind when cold and the way I stop it is by allowing the input shaft some time to slow down before engaging the synchro when cold. Once it's slightly warmed up, all is good.

My cold 1-2 grind got a little worse when I went to a thicker fluid, but this is mostly a track car for me.
Old 11-17-2015, 08:09 AM
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Also, on the 1/2 shift, make sure you are pulling straight back and only straight back. I know that I had a tendancy to keep the shifter pulled to the left when shifting 1/2. It took a fair amount of retraining to avoid that. 7700 is not very many miles. I would hope the gearbox/synchros would not be damaged in that amount of time.
Old 11-17-2015, 08:10 AM
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Right, mine used to do this until....I read on here that when you pull back to engage 2nd, make an effort to keep 'force towards the left side rather than just slotting in straight back..it has made a big difference (once warmed up you don't need to do it)
Old 11-17-2015, 08:11 AM
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Ok, so try it both ways.
Old 11-17-2015, 08:16 AM
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your 1st and 2nd are nearest to you?
Old 11-17-2015, 08:25 AM
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Originally Posted by kimdani1
Tranny fluid was changed by the Honda dealership last year, so I'm pretty sure it was the OEM stuff they used.
Based on my experience with Honda dealerships, I'd place money on them using the WRONG fluid. Buy two quarts OEM MTF fluid from the dealer, a fluid pump from auto parts store (<$10) and change the fluid out again. My 04 with 51k has zero issues between 1-2 and I have changed the fluid every 15k.

The dealer likely used whatever was in the 55 gallon drum for tranny's.
Old 11-17-2015, 09:15 AM
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...and if you buy oem fluid from the dealer, make sure they give you the correct studf.

The same parts dept that gave the dealer tech the wrong stuff is gonna make the same error when you walk up to their counter.

Sent from my SM-G920P using IB AutoGroup
Old 11-17-2015, 10:24 AM
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Originally Posted by fullleather
your 1st and 2nd are nearest to you?
Yes
Old 11-17-2015, 10:46 AM
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IMHO skip shifting is not detrimental to the trans life, I have driven all kinds of manuals and owned 27 cars, most of which were manual, from three speeds to 6 speeds, never had an issue with a skip shift, never. my current s2000 which has 75,000 skip shift miles on it shifts like butter when warm.
Old 11-17-2015, 10:51 AM
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your 1st and 2nd are nearest to you?
Yep, all those 'Merican flags implies we have LHD. (Other then the guys who pretend they're somewhere else.)

-- Chuck


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