ok so here is the story. I am driving off the exit ramp I redline to 2nd the shift into third. I dont redline third and am going about 70-75 MPH. Instead of shifting into 4th I pushed into second, it didnt feel like second but either way I let off the clutch fairly slowly and saw the car hit redline so I pushed the clutch back in. I am wondering if I should have someone take a look at the engine and make sure no damage was done. I know certain things dont always show up right away. Any suggestions would be great, ALSO would a dealer be capable of handling something like this and seeing Small changes in for instance my valve stems or something like that. I am not sure what to look for so I am essentially useless in diagnosing it. Thanks in advance.

 

If you are accurate on what you said, then worst case scenario, you were going at 75 mph at the time. This have put your engine speed at about 10,200 rpm. If you let clutch out slowly, then it's likely you slowed down somewhat and weren't actually doing 75 mph when the clutch fully engaged. Because you let it out slowly and it is considered that this engine can take momentary blips to 10,500 rpm, don't worry about it. I would suspect that you barely made it much beyond the 9000 rpm mark and if so, for such a short duration as to not be of any consequence.
If you weren't accurate in your description, then who can say what condition your engine is in?

 

I had a passenger who said I was doing around that speed also. I understand its not a perfect description. But if I did want to have it looked at Would a honda dealer be fairly competent in seeing problems? If so I just may have them look at it just to get me back to the warm fuzzy feeling. I wasnt to concerned about it mostly because it didnt feel bad it was just a bit unexpected when I was letting the clutch out. thanks a lot Xviper for your response.

 

Depends on the dealer tech doing the inspection. Many (if not most) won't know what to look for. Here is a thread to help you out:
https://www.s2ki.com/forums/index.php?act=S...=0#entry6064501

To know if you've actually damaged a valve, you'd have to do compression and leak down tests. To know if you've damaged a piston, you'd have to scope the cylinder. It's a lot of work and expense to get that warm, fuzzy feeling back.

 

Xviper I don't get it my mechanic told me that i would notice major problems right away after a bad over rev. I asked him if i should have him check out the retainers and he looked over my car and asked me how long ago it was and said 2 months ago, and he said don't worry about it. Are you saying with a over rev i could have cracked a retainer or what?

 

If you bent a valve you would probably know it right away. What your mechanic may not know is that the S2000 has a specific failure mode where you overrev, the valves "float", and even though the valves don't get bent the retainers develop stress cracks.

These cracks grow over time, eventually causing the retainer to fail and the valve to drop down into the cylinder. The event usually means a total write-off for the engine.

It all depends on how lucky/unlucky you got in your overrev.

 

Oh ok so how much do you think it is to have someone look inside of there, and can you tell if there is cracked retainers or do you have just replace

 

correct...... damn retainers.

 

just pop your valve cover off and inspect the retainers...... you can see the top of all the retainers with the naked eye. but the cracks my be very very small and could possibly be over looked.

if everything on the top of the retainers look good, you could still have a hairline crack on the bottom side of a retainer, its is very very hard to spot at you cannot see 100% of the underside.


the parts are soo damn cheap, but its the labor thats involved to replace the retainers that sucks. a shop is gonna charge a minimal of 5-6 hours to do this job.

 

have you over reved your car before