Engine, Drivetrain & Forced-Induction
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HELP!! I misshifted 4th to 3rd!!!!

Old Jul 22, 2018 | 10:49 PM
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HELP!! I misshifted 4th to 3rd!!!!

I missshifted guys!!! I need to know if everything will be ok? So I was merging into the highway shifting at 4K every gear and yes I know I drive like a girl, lol... but I wanted to go to 5th and accidentally went into 3rd... next you know rpms shot up to 4k-5k... I instantly put the clutch in and put it in neutral then proceeded to pull over when I saw that, I kept driving the car and then it drove normal, made couple of pulls and responds nice, now after that it sat at my jobs parking lot for 9 hours , turned it o, let it warm up and no weird smells came out of the engine bay , no new sounds... nothing! Do you guys think this is bad? Last time when it happened was like 7 months ago when I started driving manual
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Old Jul 23, 2018 | 12:11 AM
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You're fine. Heck for merging, your G was probably happy to drop into 3rd, give you some extra pep to get into traffic.

I think redline is like 7800rpm which plenty of guys will pull all the way up to routinely. If you try and stay in it after that fuel will cut out to protect the engine.
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Old Jul 23, 2018 | 12:41 AM
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Dont a lot of you guys drop gears to get all that torque in the 5k-6k range?
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Old Jul 23, 2018 | 01:56 AM
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Don't go for third from a red-lined fourth, fuel cut can't save the engine from your ham-fistedness. Kablooey!
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Old Jul 23, 2018 | 01:14 PM
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Originally Posted by slartibartfast
Don't go for third from a red-lined fourth, fuel cut can't save the engine from your ham-fistedness. Kablooey!
Very true....only so much the car can do it protect itself.
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Old Jul 23, 2018 | 01:24 PM
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Originally Posted by KidJai06

I think redline is like 7800rpm
7500. And at least on my car, fuel cutoff is pretty close to that.

Originally Posted by Vq_Jordy
I missshifted guys!!! I need to know if everything will be ok? So I was merging into the highway shifting at 4K every gear and yes I know I drive like a girl, lol... but I wanted to go to 5th and accidentally went into 3rd... next you know rpms shot up to 4k-5k... I instantly put the clutch in and put it in neutral then proceeded to pull over when I saw that, I kept driving the car and then it drove normal, made couple of pulls and responds nice, now after that it sat at my jobs parking lot for 9 hours , turned it o, let it warm up and no weird smells came out of the engine bay , no new sounds... nothing! Do you guys think this is bad? Last time when it happened was like 7 months ago when I started driving manual
If you were going 4-5 at 4000RPM, and instead got 4-3, you probably had enough headway in the revs to not spin it to 9000 and instead kept it under 7500. If thats the case, you're fine.
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Old Jul 23, 2018 | 04:58 PM
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This is less damaging than the car rolling back on its own

Maybe a bit brief clutch wear but so long as you didn't over-rev you'll be fine.
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Old Jul 25, 2018 | 02:27 PM
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You're fine. But don't make a habit of high RPMs. Otherwise you'll be posting stupid posts like: "I thought infinitis were supposed to be reliable" and crying about your broken and abused car.
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Old Jul 25, 2018 | 03:05 PM
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Originally Posted by Michael_in_DE
You're fine. But don't make a habit of high RPMs. Otherwise you'll be posting stupid posts like: "I thought infinitis were supposed to be reliable" and crying about your broken and abused car.
High RPMs, assuming you don't exceed redline, don't break your car, and aren't exactly abusive.
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Old Jul 25, 2018 | 03:11 PM
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Originally Posted by Lego_Maniac
High RPMs, assuming you don't exceed redline, don't break your car, and aren't exactly abusive.

Google disagrees with you:

https://www.google.com/search?q=mis+...hrome&ie=UTF-8
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Old Jul 25, 2018 | 03:19 PM
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Originally Posted by Michael_in_DE
That has nothing to do with high rpm, and everything to do with missing a shift, aka "money shift"

Googling something and dropping a page of results isn't exactly google disagreeing

Inifniti set the redline at 7500 rpm for a reason. Because it's within the safe operating range of the engine.
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Old Jul 26, 2018 | 04:30 PM
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Originally Posted by Lego_Maniac
That has nothing to do with high rpm, and everything to do with missing a shift, aka "money shift"

Googling something and dropping a page of results isn't exactly google disagreeing

Inifniti set the redline at 7500 rpm for a reason. Because it's within the safe operating range of the engine.
Agreed... missed shift resulting in excessive RPM is entirely different that accelerating under load to redline. The limiter will not help with an incorrect shift. I have my limiter set at 8K with my tune. With FI, I still make lots of power at high RPM. When I was NA there was no value in going beyond 7K as both TQ and HP have left the building. TQ peaks at 4500 and only goes down from there while HP peaks at 7K... at least those were the results on my tuned NA car
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