question about car rpm

[Ylen13]

Originally posted by: FrustratedUser
Why redline in the first place? No point besides winning the dragrace at the lights.

i usually do it when freeway meeter is on and force to stop. In order to catch up to freeway speed faster and there for making it more safe for your self and other drivers i pretty much pedal to the medal till i get close to rpm or close to speed that freeway is moving and then let it drop.

 

[Mill]

Originally posted by: mAdD INDIAN
btw total power is usually AREA UNDER THE CURVE!

Also, when you shift gears, the engine RPM changes depending on the gear ratio. So when you upshift, the engine RPM drops. Therefore if your engine makes peak power at 6000RPM and you upshift at 6500RPM, then when you get to the next gear, your engine RPM will probably be at around 5900-6000RPM whihc wlll put you in the meat of the powerband in your next gear.

Also even though at redline the engine is not producing PEAK HP, IT IS STILL PRODUCING HP that is usefull, and if its a good breathing engine, the power drop-off won't be too great allowing the engien to stretch its legs and maybe give a bit more oomph to get that higher MPH at the end of a 1/4mi.

EXFVCKINGACTLY! Give this man a prize!

 

[Evadman]

From another thread:

Originally posted by: Trinitron

Horsepower is a mathematical equation that uses engine displacement size, bore, stroke and other flow data to give a "Horsepower Rating" You have it backawards son!

Stop arguing with the 13 year old Trinitron. We all know he is an idiot. Lets move on 😛

 

[HannibalX]

Originally posted by: Millennium

Originally posted by: Trinitron
You will put allot of wear on the car by redlining it frequently. You could reduce the life of your engine by half or more. You could through a rod, blow a head gasket, and in some cases with front wheel drive cars I have seen the half shafts COME OUT of the differential... that is BAD.

How in the FVCK would a halfshaft be affected by the engine RPM? Unless you were spinning down the track or had a very good hook up after dumping the clutch, I don't see how a halfshaft would even be related to engine RPM. God, you are a MORON!

Its easy, the components WEREN'T MENT FOR THAT KIND OF RMP. EVERYTHING HAS A LIMIT. FRIGGIN DUH YOU TARD.

I am done, you all are ignorant.

 

[Mill]

Originally posted by: Trinitron

Originally posted by: KingNothing

Originally posted by: Trinitron

What does flowing air have to do with it? The engine was designed to run at 9000RPM, that's it's redline.

Actually is has a lot to do with it. The reason an engine makes peak power at a certain RPM and then declines is based on two thing. 1.) The components ability to handle the RPM and 2.) The amount of air an engine can pump efficiently. The reason you don't make power at 6000 rpm when you do at 5500 is because the internals of the engine (intake runner, head runners, combustion chambers, exhaust ports) are not SMOOTH enough to flow air to make power at that RPM. Yes the engine ca physically rev that high but there is no air to create power. This is why the power band declines. Cars that have valve jobs and porting work done flow well into their red line and the power band does not decrease, like the S2000 - this DOES NOT mean the components are able to take the RPM though.

Wheww that was allot, I hope I have educated you a little at least.

I've learned to not listen to you in any of the car threads from now on.

Ignorance is bliss, if you don't believe me than whatever. No use trying to make the blind see. I am ASE cert. so you all can think what you want. Mill I am not even to start in on your posts. You can tell me I am wrong but at this point I know otherwise. So think what you like.

I don't care what type of cert you have. That is totally meaningless to me. I only care that you are spouting misinformation and then disregarding my posts just by saying I am wrong. Whatever. I addressed your points, as did many others. You don't know what you are talking about.

 

[Mill]

Originally posted by: Trinitron

Originally posted by: Millennium

Originally posted by: Trinitron
You will put allot of wear on the car by redlining it frequently. You could reduce the life of your engine by half or more. You could through a rod, blow a head gasket, and in some cases with front wheel drive cars I have seen the half shafts COME OUT of the differential... that is BAD.

How in the FVCK would a halfshaft be affected by the engine RPM? Unless you were spinning down the track or had a very good hook up after dumping the clutch, I don't see how a halfshaft would even be related to engine RPM. God, you are a MORON!

Its easy, the components WEREN'T MENT FOR THAT KIND OF RMP. EVERYTHING HAS A LIMIT. FRIGGIN DUH YOU TARD.

I am done, you all are ignorant.

How would the halfshaft have ANYTHING to do with engine RPM? It is rotating based on RPM. It is a suspension piece.

 

[KingNothing]

Originally posted by: Trinitron
Ignorance is bliss, if you don't believe me than whatever. No use trying to make the blind see. I am ASE cert. so you all can think what you want. Mill I am not even to start in on your posts. You can tell me I am wrong but at this point I know otherwise. So think what you like.

Reminds me of the Dilbert cartoon where Captain Certification says "Step aside, I'm CERTIFIED" and then sits down and says "Hmmm...that's all I remember from the class"

 

[Eli]

Originally posted by: Trinitron

What does flowing air have to do with it? The engine was designed to run at 9000RPM, that's it's redline.

Actually is has a lot to do with it. The reason an engine makes peak power at a certain RPM and then declines is based on two thing. 1.) The components ability to handle the RPM and 2.) The amount of air an engine can pump efficiently. The reason you don't make power at 6000 rpm when you do at 5500 is because the internals of the engine (intake runner, head runners, combustion chambers, exhaust ports) are not SMOOTH enough to flow air to make power at that RPM. Yes the engine ca physically rev that high but there is no air to create power. This is why the power band declines. Cars that have valve jobs and porting work done flow well into their red line and the power band does not decrease, like the S2000 - this DOES NOT mean the components are able to take the RPM though.

Wheww that was allot, I hope I have educated you a little at least.

Hmm, you seem to be a bit confused. I mean, it's like you half know what you're talking about, but you're applying it wrong.

Yes, an engines power depends on the ammount of air the engine can pump efficiently.

You do make power at 6000RPM when compared to 5500RPM, it's just not more than @ 5500RPM. You think that power is "worthless" or something? 😕

You must not do much engine building. RPM is just as much a function of engine internals as it is intake and exhaust design.

I will say it one more time:

There is nothing wrong with redlining your engine. It is the maximum RPM that the engine manufacturer guarentees the engine to be reliable at.. That is the purpose of the redline, to say that above that point is "danger".

Christ man, get a clue.

Oh, and as for the comment that I bolded in the quote.. WTF are you talking about? The S2000's redline IS 9000RPM. It was designed to rev that high. It doesen't have portwork done to make it rev "well into its redline", it's redline is 9000RPM.

😕

 

[Evadman]

LMFAO! I loved the PM Trinitorn. Thanks for making me laugh my ass off at you more 😛

 

[HannibalX]

I should have known better to try and talk cars on anandtech. You know what everyone - listen to every word these guys say and then when you need a rebuild you can PM me and I'll see what my shop can do for you here in Orlando, FL.

Oh well I will keep my car talk to StangNet where people know what the hell they are talking about. Tell me to get a clue? Hah... right.

Your welcome Evad, the irony is perfect! Keep laughing.

 

[LongCoolMother]

its fun to redline at 9000 RPMs. 😀 it gets quite noisy and scary. heh.

 

[Mill]

Originally posted by: Trinitron
I should have known better to try and talk cars on anandtech. You know what everyone - listen to every word these guys say and then when you need a rebuild you can PM me and I'll see what my shop can do for you here in Orlando, FL.

Oh well I will keep my car talk to StangNet where people know what the hell they are talking about. Tell me to get a clue? Hah... right.

Your welcome Evad, the irony is perfect! Keep laughing.

What shop in Orlando? What is the name? I call BS on that. Stangnet? BUWAHAWHAW. No wonder you are such a moron.

 

[Eli]

Originally posted by: Trinitron
I should have known better to try and talk cars on anandtech. You know what everyone - listen to every word these guys say and then when you need a rebuild you can PM me and I'll see what my shop can do for you here in Orlando, FL.

Oh well I will keep my car talk to StangNet where people know what the hell they are talking about. Tell me to get a clue? Hah... right.

Your welcome Evad, the irony is perfect! Keep laughing.

Why is it that everybody is disagreeing with you, man?

I think I'll have to signup on StangNet and see if there's anybody that believes you there. It is quite obvious you only have half a clue about what you're talking about, due to your comments. I mean seriously man. They don't make any sense.

 

[element]

You people are insane. This whole thread could have been answered in 3 simple words:

Shift before redline.

That's all you need to know. The majority of you are too insane to contemplate anything on this topic in greater detail than that without flaming each other to hell. You'd think those 3 little words would be common sense too but not on ATOT oh no, can't have that here! What would we all do with ourselves?

Flame on redliners! 😀

 

[HannibalX]

Originally posted by: Millennium

Originally posted by: Trinitron
I should have known better to try and talk cars on anandtech. You know what everyone - listen to every word these guys say and then when you need a rebuild you can PM me and I'll see what my shop can do for you here in Orlando, FL.

Oh well I will keep my car talk to StangNet where people know what the hell they are talking about. Tell me to get a clue? Hah... right.

Your welcome Evad, the irony is perfect! Keep laughing.

What shop in Orlando? What is the name? I call BS on that. Stangnet? BUWAHAWHAW. No wonder you are such a moron.

Keep calling BS, I don't care 😀

Last post in this thread for you zealots. Keep laughing. Like I said the irony is perfect.

 

[Eli]

Originally posted by: element®
You people are insane. This whole thread could have been answered in 3 simple words:

Shift before redline.

That's all you need to know. The majority of you are too insane to contemplate anything on this topic in greater detail than that without flaming each other to hell. You'd think those 3 little words would be common sense too but not on ATOT oh no, can't have that here! What would we all do with ourselves?

Flame on redliners! 😀

Yes, it could have, but his question was does it hurt your engine...

Obviously, those opinions vary. 😉

 

[Evadman]

Originally posted by: Trinitron
I should have known better to try and talk cars on anandtech. You know what everyone - listen to every word these guys say and then when you need a rebuild you can PM me and I'll see what my shop can do for you here in Orlando, FL.

Oh well I will keep my car talk to StangNet where people know what the hell they are talking about. Tell me to get a clue? Hah... right.

Your welcome Evad, the irony is perfect! Keep laughing.

So do they all say that their stangs only make 140 HP since regular driving RPM is 2000? Because as we all know, a 9000 RPM redline is just a gimmick by Honda. and Honda should have published the HP/TQ figures for 2000 RPM since it will grenade if taken to 9000 like your friend's did.

 

[Mill]

Originally posted by: Trinitron

Originally posted by: Millennium

Originally posted by: Trinitron
I should have known better to try and talk cars on anandtech. You know what everyone - listen to every word these guys say and then when you need a rebuild you can PM me and I'll see what my shop can do for you here in Orlando, FL.

Oh well I will keep my car talk to StangNet where people know what the hell they are talking about. Tell me to get a clue? Hah... right.

Your welcome Evad, the irony is perfect! Keep laughing.

What shop in Orlando? What is the name? I call BS on that. Stangnet? BUWAHAWHAW. No wonder you are such a moron.

Keep calling BS, I don't care 😀

Last post in this thread for you zealots. Keep laughing. Like I said the irony is perfect.

Then post the name of your shop ass. If we are wrong, let us check out the shop and its rep. Oh, wait you don't have one.

 

[Eli]

I find this thread funny, actually.

I think ATOT is an excellent place to get car advice. It seems that the great majority of threads, something actually gets accomplished.

If you knew what you were talking about, there wouldn't be such strong disagreement with you.

You can not deny that an engines redline is the maximum RPM that the engine manufacturer guarentees the engine to be reliable at. That's what the freakin' redline is for.

 

[mAdD INDIAN]

Originally posted by: KingNothing

Originally posted by: mAdD INDIAN
btw total power is usually AREA UNDER THE CURVE!

Also, when you shift gears, the engine RPM changes depending on the gear ratio. So when you upshift, the engine RPM drops. Therefore if your engine makes peak power at 6000RPM and you upshift at 6500RPM, then when you get to the next gear, your engine RPM will probably be at around 5900-6000RPM whihc wlll put you in the meat of the powerband in your next gear.

Also even though at redline the engine is not producing PEAK HP, IT IS STILL PRODUCING HP that is usefull, and if its a good breathing engine, the power drop-off won't be too great allowing the engien to stretch its legs and maybe give a bit more oomph to get that higher MPH at the end of a 1/4mi.

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?

 

[KingNothing]

Originally posted by: Millennium

Originally posted by: Trinitron

Originally posted by: Millennium

Originally posted by: Trinitron
I should have known better to try and talk cars on anandtech. You know what everyone - listen to every word these guys say and then when you need a rebuild you can PM me and I'll see what my shop can do for you here in Orlando, FL.

Oh well I will keep my car talk to StangNet where people know what the hell they are talking about. Tell me to get a clue? Hah... right.

Your welcome Evad, the irony is perfect! Keep laughing.

What shop in Orlando? What is the name? I call BS on that. Stangnet? BUWAHAWHAW. No wonder you are such a moron.

Keep calling BS, I don't care 😀

Last post in this thread for you zealots. Keep laughing. Like I said the irony is perfect.

Then post the name of your shop ass. If we are wrong, let us check out the shop and its rep. Oh, wait you don't have one.

If he doesn't it's a fairly entrenched lie. He said in the "funny things people said to you today" thread that someone came into his shop claiming their Civic had 250 rear wheel horsepower. I thought about commenting on it but...nah.

 

[KingNothing]

Originally posted by: mAdD INDIAN

Originally posted by: KingNothing

Originally posted by: mAdD INDIAN
btw total power is usually AREA UNDER THE CURVE!

Also, when you shift gears, the engine RPM changes depending on the gear ratio. So when you upshift, the engine RPM drops. Therefore if your engine makes peak power at 6000RPM and you upshift at 6500RPM, then when you get to the next gear, your engine RPM will probably be at around 5900-6000RPM whihc wlll put you in the meat of the powerband in your next gear.

Also even though at redline the engine is not producing PEAK HP, IT IS STILL PRODUCING HP that is usefull, and if its a good breathing engine, the power drop-off won't be too great allowing the engien to stretch its legs and maybe give a bit more oomph to get that higher MPH at the end of a 1/4mi.

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?

 

[element]

Just to clarify, original question from the original poster:

Originally posted by: Ylen13
Is it bad if you max out your rpm all the way right before crossing red line.

Answer: NO.

End of story.

 

[Eli]

Originally posted by: Evadman

Originally posted by: Trinitron
I should have known better to try and talk cars on anandtech. You know what everyone - listen to every word these guys say and then when you need a rebuild you can PM me and I'll see what my shop can do for you here in Orlando, FL.

Oh well I will keep my car talk to StangNet where people know what the hell they are talking about. Tell me to get a clue? Hah... right.

Your welcome Evad, the irony is perfect! Keep laughing.

So do they all say that their stangs only make 140 HP since regular driving RPM is 2000? Because as we all know, a 9000 RPM redline is just a gimmick by Honda. and Honda should have published the HP/TQ figures for 2000 RPM since it will grenade if taken to 9000 like your friend's did.

LOL! Did he actually say that to you?

I suppose the 7800RPM redline of my little 2.5HP Honda GXH50 is also a gimmick. We all know that an engine can never really run that fast.

Hey man, what do you have to say about the professional racing engines that turn 10,000RPM at the track all day long? Is that a gimmick too?

 

[mAdD INDIAN]

You know you should goto HowStuffWorks.com and read up on how engines and cars work. It's quite an interesting and educational read.

Furthermore, post your ideas on Corral.net, VWVortex.com, or any automotive enthusaist website and see what they think of your ideas? Hell, send in your ideas on redlining and engines to Two Guys and a Garage (who are about as hardcore as you can get) or HotRod TV and see what they think?