Rev match scare

onzedge · 11-20-2016, 07:06 PM

Quote:

Originally Posted by kenchan

its a good warning not to mechanically put the car into 2nd while going 75mph. cause datz how u destroy ur engine. the rev itself wont hurt it as there is fuel and u got rev limiter.

Louie cat · 11-21-2016, 12:46 AM

Quote:

Originally Posted by cv129

Sorry in advance OP, but I gotta point this out. A few months ago, in another thread, you posted:

"you can shift at 6k all day long and it will never hurt the engine. that is not even touching red line."

Damaging a Z..

And now you worry about one single no-load rev. I am confused

kenchan · 11-21-2016, 03:40 AM

Quote:

Originally Posted by Nithmo

What are you talking about? Fuel has nothing to do with it. There are plenty of times there is no fuel being injected- like when downshifting in high rpm and not hitting the throttle. The engine doesn't need to inject fuel because it is moving so fast, it just keeps moving on its own. It's more your rods breaking or your valves staying open and burning out due to the engine spinning faster than it is intended to.

The rev limiter won't save your engine on a downshift either. The synchro rev will push RPM up until redline, but only if the clutch is still pushed in all the way. As soon as you release the clutch, there is nothing the car can do to stop the engine from over revving and destroying itself.

do urself a favor and re-read da post.

SG4247 · 11-21-2016, 09:23 AM

I drive my Z 60 miles a day, as a driver in heavy interstate traffic.

It gets to 7200-7500 at least twice a day. I generally drive the AT in M, and can shift it just before redline now by feel.

I did jump on it the other day thinking it was in M, but it was in D. I upshifted it manually by instinct, and it went to Neutral since the shifter was in the wrong slot. It went to 7700 immediately, since my foot was flat on the floor! This is not good - since there is no load on the crank. Hasn't seemed to have bothered it at all.

Keep good clean oil in it, at the correct fill level and temperature, and this engine will tolerate a lot of abuse.

BehindSpace · 11-22-2016, 04:38 PM

revmatch will not hurt the engine, this is not an issue

jaedub · 11-22-2016, 04:54 PM

I was around 7k RPM on 4th gear and was about to shoot it to 5th but I accidently shot it to 3rd. Engine screamed and I felt terrible. But nothing happened afterward. VQs are pretty solid engine.

Louie cat · 11-23-2016, 05:46 AM

Quote:

Originally Posted by jaedub

I was around 7k RPM on 4th gear and was about to shoot it to 5th but I accidently shot it to 3rd. Engine screamed and I felt terrible. But nothing happened afterward. VQs are pretty solid engine.

Mine wasn't quite so high ,but that was the same feeling I had! happy thanks giving

mishuko · 11-23-2016, 08:36 AM

I neutral rev all the time. I hit redline in first and 2nd more frequently than not. I sit at 4k rpm when I'm near a prius.

I slow down and downshift entering a tunnel and wot redline through it.

Aslong as your temps are good it's fine.
Hmm

B&W_Evader · 11-23-2016, 08:39 AM

Quote:

Originally Posted by mishuko

I neutral rev all the time. I hit redline in first and 2nd more frequently than not. I sit at 4k rpm when I'm near a prius.

I slow down and downshift entering a tunnel and wot redline through it.

Aslong as your temps are good it's fine.
Hmm

Remind me not to buy a used car from you.

ayrton88 · 11-23-2016, 09:53 AM

Quote:

Originally Posted by B&W_Evader

Remind me not to buy a used car from you.

My God, no kidding!

Nithmo · 11-23-2016, 11:35 AM

Quote:

Originally Posted by kenchan

do urself a favor and re-read da post.

I did, and I still think you're incredibly wrong

shirokenkami · 11-25-2016, 08:45 AM

It's quite safe to blip the throttle to that point.

11-21-2016, 09:23 AM	#19 (permalink)
SG4247 Track Member Join Date: Oct 2016 Location: OKC Posts: 820 Drives: 2010 touring Rep Power: 7842	I drive my Z 60 miles a day, as a driver in heavy interstate traffic. It gets to 7200-7500 at least twice a day. I generally drive the AT in M, and can shift it just before redline now by feel. I did jump on it the other day thinking it was in M, but it was in D. I upshifted it manually by instinct, and it went to Neutral since the shifter was in the wrong slot. It went to 7700 immediately, since my foot was flat on the floor! This is not good - since there is no load on the crank. Hasn't seemed to have bothered it at all. Keep good clean oil in it, at the correct fill level and temperature, and this engine will tolerate a lot of abuse. NJZGuy and Louie cat like this.

11-22-2016, 04:54 PM	#21 (permalink)
jaedub Track Member Join Date: Aug 2010 Location: Los Angeles Posts: 906 Drives: 2010 Black 370Z MT Rep Power: 305	I was around 7k RPM on 4th gear and was about to shoot it to 5th but I accidently shot it to 3rd. Engine screamed and I felt terrible. But nothing happened afterward. VQs are pretty solid engine. Louie cat likes this.

11-25-2016, 08:45 AM	#27 (permalink)
shirokenkami Base Member Join Date: Oct 2016 Location: Middle Tennessee Age: 38 Posts: 232 Drives: 2013 Z Tour Spt 6mt Rep Power: 23	It's quite safe to blip the throttle to that point. __________________ “The only thing necessary for the triumph of evil is for good men to do nothing.”- Edmund Burke

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11-22-2016, 04:38 PM	#20 (permalink)
BehindSpace Base Member Join Date: Feb 2015 Location: Orlando, FL Posts: 83 Drives: 2014 Evo X MR Rep Power: 86	revmatch will not hurt the engine, this is not an issue

11-23-2016, 08:36 AM	#23 (permalink)
mishuko A True Z Fanatic Join Date: Jul 2014 Location: bouncin on tigga Posts: 8,062 Drives: '12 Z Rep Power: 9436	I neutral rev all the time. I hit redline in first and 2nd more frequently than not. I sit at 4k rpm when I'm near a prius. I slow down and downshift entering a tunnel and wot redline through it. Aslong as your temps are good it's fine. Hmm