VeilsideAP1

Just a quick question about overrev on the f20c... if the engine is overreved, how soon would it be noticable that there is internal damage... Would you immediately have an engine light, or would you hear the pistons make contact with the valves? Is there any way to tell? Any information would be most helpful!

xviper

Kinda depends on how badly you over-revved and how badly you floated those valves. If you did it real good, then you'll hear all kinds of odd engine clatter right away and the car won't run very well if at all. If you just grazed a valve with your piston, it may have only caused a fracture and you may not know about it for a long time, if ever. In a mild case like that, you'd have to check the individual components out pretty closely to see if they were damaged. If it's running OK now and not making any weird noises, you might be alright, you might not. Can't say.
The CEL would only come on if the damage affected one of the monitored functions (sensor).

VeilsideAP1

Thanks xviper. I actually called my girlfriends dad, who has been a Honda Tech for 15 years.... Ye said the same more or less... He said that since I didn't let the clutch out completely, and the rpms hit redline for about a second... I may be fine.. No noticable difference, but a strong desire to do the internal work on my engine now.... I am still a little scared, but I am going to replace the vavles, springs, and cams by the end of the year... Thats what I get for drifting a road I didn't know.... couldn't pay enough attention to what I was doing....

xviper

[QUOTE]Originally posted by 2003spa2000
[B]Thanks xviper. I actually called my girlfriends dad, who has been a Honda Tech for 15 years.... Ye said the same more or less... He said that since I didn't let the clutch out completely, and the rpms hit redline for about a second... I may be fine.. No noticable difference, but a strong desire to do the internal work on my engine now.... I am still a little scared, but

VeilsideAP1

thanks again. I was planning on doing the mods anyway, but my engine is still to young to warrant the internals.... I was going to wait until the end of the year... It's only about a month and a half old, and it has about 5400 miles already... I will take your advice and go get it checked with the fiber optic camera... I can't help but obsess that I may have hurt my baby... It would definitely give me some peace of mind until I do the mods.

jyeung528

xviper,

if he has damage, would it be possible that the damage got worse down the line and cause FURTHER damage?

Would replacing those valves and other parts possibly PREVENT FURTHER damage?

VeilsideAP1

wow, flashback... the motor didn't have any damage, but did blow due to a poor toda camshaft installation... replacing anything that was damaged would fix the problem, with no reoccurances from that specific incident. If I have floated the valves and scared a piston, it could have possibly caused problems much later on maybe... now if you bend a valve, it will get worse until the valve drops... then boom... luckily for me this was not the case, and I pulled out before any overrev occured... thats what I get for drifting and letting the inertia effect my shifting... a good scare...

Tha_don_7

Well I over reved my s2000 and the car just died out on me. it wouldn't start
I'm towing my s2000 to honda to get it checked out to see what's wrong with the car. I hope it's just a small damage down to the engine.

xviper

I think Veilside answered your question pretty well.

Homo Sapien

This may be a novice question - how do you over rev the engine and do damage if it has a rev limiter?

I just got back from a drive where I inadvertantly hit the rev limiter and it got me to wondering. And I don't want to bend any valves or whatnot.

thanks.