Over-Revved, Am I gonna be ok ?????
 

I was going 70mph and were going into 4th but mis-shifted and went in to 2nd :mad:

It made horrible sound, I Immediately clutch in and get out of 2nd. Next morning I was paranoid and "felt" like the car was losing power but idk if its in my head or what .... Is the car gonna be ok ??

You should be alright, just try not to do that again. Ever...

Drive something else for a couple days let your butt dyno feel something of less power and then hop back in the z and tell us how it feels, all I can say is it will be a lot of fun all over... :)

lol! but true.....

:confused:



OP, most likely nothing bad happened, but it's hard to say through the internet. It isn't difficult to damage things by overrevving the motor. I can't tell you how many people I know that have destroyed a motor with just an overrev or two.

This is why synchro revmatch is stupid. I knew that would blow an engine sooner or later

SR would actually save most people, since you'd catch it before you actually put it in gear/released the clutch. Throttle overrev isn't a problem, mechanical overrev is.

Most people would catch it before putting it in gear, just like most people leave vdc on...

actually...synchro-rev would save you in this situation. i know its saved me...i accidentally pulled the stick too far left as i was downshifting and the synchro-rev revved to redline and bounced off the limiter. once i realized it bounced off the limiter i let off the gas and pushed it into the correct gear.

in this case, i never mis-shifted per say, but since the computer automatically over-revved for me, i realized my mistake before it was too late.

I thought our cars had rev limiters on them...

you should be fine. I was at the drag strip once in my 350z and accidentally downshifted from 3rd to 2nd at redline in 3rd. The tach went all the way to the bottom of the gauge, well past redline, but only momentarily and it was just fine afterwards. I'm guessing I had it at around 8500 rpm for about a half second.

I missed a 3rd to 4th shift and went to second in my 90 Mustang GT with 3.73 gears in the rear. The motor hit red line but the crappy part was the back tires just drug so much that the car just started to slide like crazy.. Imagine doing 70 and locking the parking brake.. That's what it was like..

all modern cars have rev limiters, however a rev limiter wont save you from a mis-shift. the limiter will only stop the engine from revving too high during acceleration...but if you downshift from say 5-2 at 60-70mph...you will likely land over the redline due to how gearing works..

I hope everything is gonna be alright, the car feels fine now. I just don't have the money for engine work right now lol

I don't see SRM as a contributing factor, nor as a saving grace. If SRM blipped too loudly, you'd have about an instant in some cases before just throwing her into gear and releasing the clutch pedal.

Either way, this is scary. I've done it before. I've been driving manual cars for a long time now. I don't know if you've done engine or clutch damage. I think only time will tell.

Does anyone else wonder whether some people should drive these cars?

(Not OP, but the ignorance about how this stuff works by some others... :shakes head:)

I would see if someone can check the valves (not sure if it's a different can of worms on this motor).

Any misfires? Extra valve chatter? CEL?

I've not long lived in the US and still getting used to shifting with my right hand. I almost did it once trying to shift down from quickly from 5-4, and since then I've decided to give it a couple months of gentle, slow shifts to fully get accustomed to right-hand shifting before I start throwing the gears around again.

ouch. Thats a big punch to your engine. Im sure its gonna be okay but miss shifting in high rpm is crucial

your post reminded me of high school. A friend of mine had 12 in glass packs on a 84 chevy pick up. That is how he would rack off is pipes.3-2 at the top of 3 some times 4-2 most of the way through 4th. If he couldn't pull it into gear. He would stand up put both hands on the gear shift and drop on it so cram it in. He did this into reverse from 35mph. Only he stabbed the gas. The rear wheels slid for about 20 ft then bunny hopped for another 20ft. changed direction and roasted the off to get back to were he passed me on the side of the road.All of this with out lifting off the throttle. I was walking when he noticed me. That was the quickest way to give me a lift.

Oh to be young and dumb. That was a seriously tough truck. chevy 305 bone stock except for dual exhaust and a 4 speed with granny gear. They don't make 'em like that anymore.

:ugh2:

I did that a few times until I learned how to shift a 6-speed with a factory shifter the right way. I always invert my hand on the 2-4 shift and that keeps you from pulling towards your body and hitting 2nd. I did it in a car with pushrods. Nothing bent and it was fine. If you had truly screwed the shift bad, you would have broken the rear-tires loose and made comment about barely keeping it out of the ditch--or not.

That being said...

The wheel bearings and axles did go out on that car, and the pinion-bearing spun. This happened 5-10K miles after the missed shift. Did it cause it? Maybe, maybe not. It sure didn't help the situation.

Only time will tell. I do think it may have shocked/misaligned the pinion bearing and led to the failure over time. Just my personal guess.

You should be happy that you didn't hear a boom from the engine bay.

You are probably ok if you were only going 70. You were likely not over-revving it by all that much. By my calculations it should have only been about 8166 RPM.

That's a quick way to kill the engine. The limiter doesn't work in this case if you mechanically over rev.

:confused:

The Z can heal itself over time. Just give it some time.

:confused:

I never understood the meaning of this bunny with dorayaki on its head....

Oh, if only just over 8K he's probably fine.

Bunny pic = "this makes no sense"

I did this once by accident when I first got the car. Now it's at 8K and it's running fine. I was going 60ish and went from 5-2, then clutched in.

my short shifter saved me from doing exactly that. was going pretty quick, went to shift into 4th but gated it into 2nd, but i was able to feel that it wasn't in the right gear before letting out the clutch so no harm was done. B&M shifter ftw.

Like importconvert said, changing your grip on your 3-4 shift can help avoid shifting into the wrong gear. if you just do the kung fu death grip for all shifts you are more likely to pull towards your body.

LOL... oh if life were that good. That made my day

These people exist^

You should be fine. I've hit 9500 rpm in mine once. She screamed like crazy, but that's about it

Yes! I did the same thing. The shift gates are fairly narrow as we know, so it's pretty easy to go into 2nd instead of 4th if you're not careful. But when I got the shifter over to 2nd the SRM kicked in and revved up the engine about to the red line. I caught my mistake before letting out the clutch and no harm was done!

Normally I'd be mad about the thread necro, but I love seeing whose car I shouldnt buy.

i guess the benefit of having SRM is that it wakes you up when you enter the wrong gate as the engine rev's up electronically, but you get a moment to fix the situation before you clutch-out so you dont have mechanical over-rev.

mechanical over-rev = not nice to engine.
electronic over-rev = bouncing off rev limiter = no issue.

I did this today! I went from 5th to 2nd at around 50 MPH. BUT I did not go into gear, SRM saved the day!

If you can't blip the throttle or put the shifter in the right gear... just buy an automatic.:stirthepot: :p How many aspects of shifting can the car perform for you while still being a manual transmission. I think we need a feature in which the shifter actually moves between gears for us and then we can just kind of hold on and pretend we are doing it kind of like those pianos that play themselves.