I remember when Car and Driver did the first preview of a pre-production S2000, and they noted the same problem of grinding into 2nd gear a few hundred RPMs below redline. It didn't grind if they went all the way to redline. I think it has something to do with balancing and resonance. The are probably better and worse RPMs for each particular tranny to be shifted at. I think that each tranny will perform better on certain oils. I tried 5 different tranny oils before finding one that worked well.

 

The car is under warranty, so I'd have them look at it.

quoting xviper from his thread at the top of this forum

 

You are correct, it is under warrenty but they don't know what the hell they are doing. They will just say, then don't do it.

As far as driver error, I am not saying that I am the best driver out there but It never does it when I shift at 8000 and always (since yesterday) does it when I shift at 7500 does not sound like driver error to me, do it to you?

John

 

two words: dealership warranty.

 

I don't trust my dealership. With my luck they will screw it up more. Secondly I don't have oem tranny fluid in her and they could just say it is messed up because of your fluid, sod off.

John

 

There isn't any reason to try and get the dealership to fix it. They won't be willing to reproduce the conditions that you are describing. On the drver error thing, it is a good possibility that when you "short shift", you are doing it too quickly. Avoiding gear grinds during a quick shift takes perfect timing, especially with this car. Rushing a shift from 1st to 2nd rarely works.

 

I agree, let me ask you this. Is it easier at 8000 than at 7500? If so then I can believe it is just driver error, and practice more or just not shift at 7500.

Thanks

John

 

I don't know what you mean by "easier at 8000", but I know that when I shift at redline, it is usually when I'm going straight, with plenty of road left ahead, and the only thing I have to think about is making the shift. However, if I'm shifting early, it is probably because I've got something else going on that is going to distract me from making "the perfect shift".

 

What I mean is, assuming the conditions are the same are you more likely to grind at 7500 over 8000? I have been driving this car for 11,000 and have been shifting at redline for 10,000 of those 11,000 miles and have NEVER ground the gear shifting from 1st to 2nd EVER until yesterday. Today while testing my grinding theory I was on an empty road that was straight and only thinking about shifting. I ground at 7500 but did not at 8000.

I think you are suggesting that it is driver error because I am short shifting. That is why I asked if it is easier to shift at redline vs. 7500. I would think it is the same but I don't know what goes on in the tranny. Hope this makes since, thanks

John

 

I see, but I don't really know the answer to that. It seems like a good theory is that their may be resonant vibrations occuring that cause the synchros to not work as well at 7500 as they do at 8000, but this is just a WAG.