Over-Revved, Am I gonna be ok ?????

Mike · 02-15-2011, 08:42 PM

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.

RockStarKick · 02-15-2011, 08:56 PM

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..

samb03 · 02-16-2011, 12:19 AM

Quote:

Originally Posted by RockStarKick

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..

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.

tonybui · 02-15-2011, 10:22 PM

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

wilsonp · 02-15-2011, 10:44 PM

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

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

)

shadoquad · 02-16-2011, 09:45 AM

Quote:

Originally Posted by wilsonp

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

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

)

Jordo! · 02-15-2011, 10:44 PM

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?

Super Tanooki · 02-15-2011, 10:47 PM

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.

jaedub · 02-16-2011, 12:03 AM

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

Red__Zed · 02-16-2011, 12:38 AM

ImportConvert · 02-16-2011, 05:16 AM

Quote:

Originally Posted by tonybui

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

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 ??

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.

TongMan · 02-16-2011, 08:49 AM

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

houkouonchi · 02-16-2011, 09:06 AM

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.

kenchan · 02-16-2011, 09:22 AM

Quote:

Originally Posted by tonybui

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

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 ??

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

spearfish25 · 02-16-2011, 10:57 AM

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

02-15-2011, 08:42 PM	#1 (permalink)
Mike The370Z.com Sponsor Join Date: Jun 2009 Location: Loganville, GA Posts: 5,944 Drives: 370z Rep Power: 2186	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. __________________ NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z Porsche: 93 968 / 23 Macan GTS / 93 968

02-15-2011, 08:56 PM	#2 (permalink)
RockStarKick Enthusiast Member Join Date: Dec 2010 Location: Houston Posts: 298 Drives: it like a rental Rep Power: 15	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.. fuct likes this. __________________ 2013 Mustang GT, 6M, Track Pack & Leather Recaros 2011 Pearl White 6M /Sport Pkg - SOLD

02-15-2011, 10:44 PM	#5 (permalink)
wilsonp A True Z Fanatic Join Date: Jul 2010 Location: Virginia Posts: 1,134 Drives: 2009 Touring Sp Nav Rep Power: 17	Does anyone else wonder whether some people should drive these cars? (Not OP, but the ignorance about how this stuff works by some others... ) __________________ 2014 Cayman S PDK Sport Chrono White/Black Was 2009 370Z Touring Sport+Nav 7AT Metallic Black/Persimmon Was 1991 NSX Auto Black/Black

02-15-2011, 10:44 PM	#7 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 419	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? __________________ Enjoy it. Destroy it.

02-16-2011, 10:57 AM	#15 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1857	The Z can heal itself over time. Just give it some time. __________________ 2013 Cadillac V-Wagon, RIP Z

02-15-2011, 10:22 PM	#4 (permalink)
tonybui A True Z Fanatic Join Date: May 2009 Location: Maryland Posts: 1,397 Drives: 09 Sports 6 Speed Rep Power: 427	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

02-15-2011, 10:47 PM	#8 (permalink)
Super Tanooki Base Member Join Date: Jul 2010 Location: Las Vegas Posts: 217 Drives: 370Z MT Base/Spt Red Rep Power: 15	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.

02-16-2011, 12:03 AM	#9 (permalink)
jaedub Track Member Join Date: Aug 2010 Location: Los Angeles Posts: 906 Drives: 2010 Black 370Z MT Rep Power: 305	ouch. Thats a big punch to your engine. Im sure its gonna be okay but miss shifting in high rpm is crucial

02-16-2011, 12:38 AM	#10 (permalink)
Red__Zed A True Z Fanatic Join Date: Jul 2010 Location: window seat Posts: 28,940 Drives: Mostly on two wheels Rep Power: 120

02-16-2011, 08:49 AM	#12 (permalink)
TongMan A True Z Fanatic Join Date: Feb 2010 Location: NorCal Posts: 1,297 Drives: 2013 Nissan GTR Rep Power: 716	You should be happy that you didn't hear a boom from the engine bay.

02-16-2011, 09:06 AM	#13 (permalink)
houkouonchi Enthusiast Member Join Date: Jun 2010 Location: Ontario, California Posts: 440 Drives: '14 GT-R '10 M6 370z Rep Power: 15	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.

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