Originally posted by: KingNothing
Originally posted by: mAdD INDIAN
Originally posted by: KingNothing
Yeah, I kinda said that already. Had a graph and everything.
What point is that, Trinitron?
Sorry, its the Skoorb effect..hehe..
ANyway saying things multiple times is easier to drill the point home, remember that Simpsons episode where Marge demonstrated that?
Not really, I have all the Simpsons episodes though (haven't watched hardly any yet) remember which one it was?
I don't remember, but I think its the one where Bart got kicked out of school and he was home-schooled by Marge. I could be wrong though.
Originally posted by: KingNothing
Those engines must have hella strong halfshafts.
If it weren't for my horses in college, my valvetrain would have never reached the station.
halik
Lifer
- Oct 10, 2000
- 25,696
- 1
- 81
wheres the arguing on the internet/special olympics picture when you need it?
Redlining engine isnt as good as keeping it between 2000-3000, but then again when you drive somewhere at 80mph/4k rpm for couple hours it puts more wear on the engine than fraction of secon shift at 6500. I dont redline my engine too much, since i only need peak power when passing someone (when i upshift, i wont push it to the redline again) and i use synthetic so i dont boil turbo.
I guess the summary is...its ok, dont do it often/for long periods of time
Redlining engine isnt as good as keeping it between 2000-3000, but then again when you drive somewhere at 80mph/4k rpm for couple hours it puts more wear on the engine than fraction of secon shift at 6500. I dont redline my engine too much, since i only need peak power when passing someone (when i upshift, i wont push it to the redline again) and i use synthetic so i dont boil turbo.
I guess the summary is...its ok, dont do it often/for long periods of time
This is the answer to the question. You will have increased engine wear than at a slower engine speed but take that for what you will. I redline somewhat frequently. When you go over the redline, bad things can happen.
Arguing on the internet cleans out the system though...for instance, I feel much more ready to work on my research paper now.
I shift well over redline in my car, and when I get a PCM, I plan to shift even higher... but yeah, for some cars, redline is bad... just make sure you got good fresh oil...
That is SO true, my 96 Chevy Lumina cuts the fuel around 4000 rpm when the redline is a 6000. I'd like to see is go to at least 4700rpm before cutting out. Lumina is an auto tranny.
I'd like to note that what you said is true for boring passenger cars, and not sports cars which are cammed to be revved high.
The more I read Trinitron's posts, the more I see that he's full of crap.
My car most definitely makes power to redline, and I have the rev limiter raised by 200 rpm's, to 7200 rpm.
I dyno'd my car, and while my rear wheel torque peaks at 389 ft/lbs at around 4600 rpm, I make plenty of power all the way up to 7200 rpm, which is the rev limiter. In fact, I don't drop below 300 rear wheel hp until 7000 rpm.
My car most definitely makes power to redline, and I have the rev limiter raised by 200 rpm's, to 7200 rpm.
I dyno'd my car, and while my rear wheel torque peaks at 389 ft/lbs at around 4600 rpm, I make plenty of power all the way up to 7200 rpm, which is the rev limiter. In fact, I don't drop below 300 rear wheel hp until 7000 rpm.
I redlined my old Toyota Corolla every time I drove it. I advanced the ignition timing and also the cam timing. I revved that thing sky high.
Did it reduce the lifespan of the engine? No.
The car lasted till 211,000 miles and even then, the only reason it stopped going is because someone plowed into me at a stoplight.
If the engine is built right, redlining it will NOT hurt it.
Did it reduce the lifespan of the engine? No.
The car lasted till 211,000 miles and even then, the only reason it stopped going is because someone plowed into me at a stoplight.
If the engine is built right, redlining it will NOT hurt it.
Let me tell you this- not only will redlining my engine not hurt it, but people on the Z board have redlined the engine making 630 rwhp on the stock Nissan engine internals, which is way more than twice what the engine put out stock.
And what do half shafts have to do with redlining the engine? Halfshaft speed is dependent what gear you have it in. You can redline it all you want in first, second, and third gear, and the halfshafts still won't be spinning as fast as they will be when you're in just cruising along in 5th gear.
having a 96 civic with 110,000+ miles on it, and knowing nothing about cars, i rarely try to accelerate quickly, let alone redline. i like to take it easy...
i'll be sure not to take my car to Trintron's shop. if he has this much time to nef, he's prob not getting much business.
if cars hit the red line and goes (whatever Trintron mentioned here) the the car manufacs would get sued like crazy for having their engines burned out.
hitting the red line's ok, the fuel will cut off and rpm will drop a bit, if you don't shift, the engine will rev up to cut off point and repeat the process. so the redline is set below the (whatever Trintron mentioned point) so you won't ahve to worry. unless yer cars getting old/old and can't take it i see no problems.
of course the car being reved to the redline all the time prob won't last as long as one driven in a gentle fashion, but what's the fun in that?
btw thanks for the laughs, and annoyingly long quotes
if cars hit the red line and goes (whatever Trintron mentioned here) the the car manufacs would get sued like crazy for having their engines burned out.
hitting the red line's ok, the fuel will cut off and rpm will drop a bit, if you don't shift, the engine will rev up to cut off point and repeat the process. so the redline is set below the (whatever Trintron mentioned point) so you won't ahve to worry. unless yer cars getting old/old and can't take it i see no problems.
of course the car being reved to the redline all the time prob won't last as long as one driven in a gentle fashion, but what's the fun in that?
btw thanks for the laughs, and annoyingly long quotes
I'm glad this thread turned out well. I had to leave and go to my girlfriends, so I didn't get to participate anymore, even though it looks like the excitement died down.
I had to leave and go to my girlfriends, so I didn't get to participate anymore, even though it looks like the excitement died down. No, YOU shut up. We have pointed out your mistakes in many past threads and you've never bothered to rebut.Originally posted by: Trinitron
Originally posted by: Eli
What kind of crack are you smoking today? Must be the real good kind.
No offense, of course.
Eli shut up you. You are a wanna be mechanic.
zCypher
Diamond Member
- Aug 18, 2002
- 6,115
- 171
- 116
I don't know all that much about cars, but at least I would know to shut up when everybody is saying I'm wrong.
Anyway here's my take on some: It depends on your car. If you compare a torqueless 4cyl to a torque monster V8 - there's likely to be a big difference, no? A civic can rev to 6000rpms on a daily basis without having probs, but I don't think a low-revving V8 engine would take daily 6k revs too well? I could be way off, but that's just the impression I get. Then again over-revving can hurt ANY engine. I guess it's how you drive it... If you drive very abruptly, mash on the gas all the time, drop the clutch when revving high, etc... your car likely will not last very long. i don't see how revving UP to redline can hurt very much though, if you know how to drive properly... parents used to have a 91 si hathback back in the day, and it was put to the redline at least a few times per week, and that car had over 300,000km on it with 0 problems (only repairs were minor - muffler.. rust related)... so hence if you know how to drive, and take care of your car, you shouldn't have a problem
there we go... did we need to argue about whether half-shafts were relevant or any other mumbo jumbo? no
Anyway here's my take on some: It depends on your car. If you compare a torqueless 4cyl to a torque monster V8 - there's likely to be a big difference, no? A civic can rev to 6000rpms on a daily basis without having probs, but I don't think a low-revving V8 engine would take daily 6k revs too well? I could be way off, but that's just the impression I get. Then again over-revving can hurt ANY engine. I guess it's how you drive it...
If you drive very abruptly, mash on the gas all the time, drop the clutch when revving high, etc... your car likely will not last very long. i don't see how revving UP to redline can hurt very much though, if you know how to drive properly... parents used to have a 91 si hathback back in the day, and it was put to the redline at least a few times per week, and that car had over 300,000km on it with 0 problems (only repairs were minor - muffler.. rust related)... so hence if you know how to drive, and take care of your car, you shouldn't have a problem there we go... did we need to argue about whether half-shafts were relevant or any other mumbo jumbo? no
So with a car with an auto tranny, is bad to throw it from lets say D4 to D3 (so you force the car to shift from 4th to 3rd gear), then down to 2 (2nd gear)? My example is with a '03 civic...i've done that occasionally if i find myself slowly gaining on the car in front of me (and i didn't feel like hitting the brakes). It's kinda corny, yeah, but what can i say, i'm bored. If it's bad though i'll stop doing it
Originally posted by: wasssup
So with a car with an auto tranny, is bad to throw it from lets say D4 to D3 (so you force the car to shift from 4th to 3rd gear), then down to 2 (2nd gear)? My example is with a '03 civic...i've done that occasionally if i find myself slowly gaining on the car in front of me (and i didn't feel like hitting the brakes). It's kinda corny, yeah, but what can i say, i'm bored. If it's bad though i'll stop doing it
Civics have brakes, I believe.
umm...that can't be rgith man.. Usually hte fuel cutoff is at redline not before. I'd get that checked out!
how about some real world experience?
Take my cars to redline all the time...
Change the oil in my cars every 3K
I've also blown 4 motors. (mustang GT - twice...f'in ford, M3, Prelude)
Ya pays yer dues and ya takes your chances.
Take my cars to redline all the time...
Change the oil in my cars every 3K
I've also blown 4 motors. (mustang GT - twice...f'in ford, M3, Prelude)
Ya pays yer dues and ya takes your chances.
Originally posted by: WinkOsmosis
Originally posted by: wasssup
So with a car with an auto tranny, is bad to throw it from lets say D4 to D3 (so you force the car to shift from 4th to 3rd gear), then down to 2 (2nd gear)? My example is with a '03 civic...i've done that occasionally if i find myself slowly gaining on the car in front of me (and i didn't feel like hitting the brakes). It's kinda corny, yeah, but what can i say, i'm bored. If it's bad though i'll stop doing it
Civics have brakes, I believe.
you're a sharp one, eh?
jlee
Lifer
- Sep 12, 2001
- 48,518
- 223
- 106
The engine in my car (1998 Toyota Corolla) is basically the same as the Celica GT (1ZZFE)..except the Celica has VVTi and mine doesn't. IIRC, Celica redline is 7000rpm. My redline is 6000rpm with fuel cutoff at ~6200 (I don't believe I've hit that, though). My peak torque is 4400rpm; peak hp is 5500rpm....
My philosophy is that the rev limiter is there for a reason, and Toyota wouldn't cut it so close to have something explode if I touch it..because that's what it's there for -- to prevent engine damage! I'd rather enjoy driving and have to replace my engine at 220,000 miles than drive like a grandma and have it last for 300k...but maybe that's just me.
My philosophy is that the rev limiter is there for a reason, and Toyota wouldn't cut it so close to have something explode if I touch it..because that's what it's there for -- to prevent engine damage! I'd rather enjoy driving and have to replace my engine at 220,000 miles than drive like a grandma and have it last for 300k...but maybe that's just me.
Originally posted by: wasssup
So with a car with an auto tranny, is bad to throw it from lets say D4 to D3 (so you force the car to shift from 4th to 3rd gear), then down to 2 (2nd gear)? My example is with a '03 civic...i've done that occasionally if i find myself slowly gaining on the car in front of me (and i didn't feel like hitting the brakes). It's kinda corny, yeah, but what can i say, i'm bored. If it's bad though i'll stop doing it
that practice is called engine-braking... i do it in my 5sp all the time... i guess youll be putting wear on your auto gearbox... but i avoid it completely just because it feels weird
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