Redlining *cringes and hides behind wall*
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Captain
Joined: Feb 2007
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From: NE Ohio
Redlining *cringes and hides behind wall*
So I was thinking the other day...I have heard that you DO NOT want to redline. Yes, I know when you hit the redline the rev limiter kicks in. I have heard so many times that is bad. So drifters I know do it all the time. I'm not saying drifting is the best way to take care of your car...
So, the rev limiter is there to protect the tranny. So it stops it from going to high and being destroyed. Can't you hit the redline and nothing happen? Or does the process of the limiter do some damage? I know taking rpms up that high isn't the best thing for your car but setting that aside--does hitting the redline doing any damage?
Like in the topic title...I know this is an extremely dumb question. I'm sure you guys are thinking, "What an idiot" haha. Sorry
So, the rev limiter is there to protect the tranny. So it stops it from going to high and being destroyed. Can't you hit the redline and nothing happen? Or does the process of the limiter do some damage? I know taking rpms up that high isn't the best thing for your car but setting that aside--does hitting the redline doing any damage?
Like in the topic title...I know this is an extremely dumb question. I'm sure you guys are thinking, "What an idiot" haha. Sorry
Record Breaker
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RE: Redlining *cringes and hides behind wall*
hitting the redline does the same amount of damage as just holding it at a nigh rpm because its doing the same thing. you never want to go past it, and you shouldnt stay there for long. it is there like you said to protect the car. drift cars hit them for a while so they dont have to shift, but the engines are taking one hell of a beating. hitting the redline doesnt do anything. keeping it there does
Grand Champion
Joined: Jan 2004
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From: 45th parallel, MI
RE: Redlining *cringes and hides behind wall*
It really just puts more strain on things. I don't normally come anywhere close to it when driving normally on the streets. Sometimes I hit it on a onramp to the highway or something, but like mike said I don't keep it there for long. However when I drag race, I hit it all the time. One time I actually bounced it off the limiter for a sec, I was bit slow to shift. It does nothing, but I'm glad the limiter was there cause if it wasn't I'm sure I would have hit 9k before I shifted (thats if it revved that high). Generally too your power drops off at redline as well so there isn't much reason to wind it out that far unless you're drag racing and want back in your power band after you shift.
Grand Champion
Joined: Nov 2005
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From: Charleston, SC
RE: Redlining *cringes and hides behind wall*
On a Non-Magnum engine your not making any power near redline...the best place to shift would be around 6,500. Hell, even on a Magnum engine that "makes" power up to 7,000 RPM's I shift right at 6600 or so...as for causing damage, it wont do anything, which is why the rev limiter is there in the first place.
Rookie
Joined: May 2007
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RE: Redlining *cringes and hides behind wall*
engineers make a saftey margin for a reason, hitting the rev limiter wont do any major damage, just the normal wear and tear of running the car up to those higher rpms.
(the rev limiter in my car is fun: atmospheric dump WG+rev limiter=lots of fire)
(the rev limiter in my car is fun: atmospheric dump WG+rev limiter=lots of fire)
Joined: May 2007
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RE: Redlining *cringes and hides behind wall*
The limiter isn't there to protect the tranny, persay, but without a properly built motor, it can hurt other things. Depending on whether the engine is oversquare or undersquare (relating bore size to stroke length in milimeters), the only thing preventing high-revving are the components in the head, namely the valve springs and camshafts. The camshafts in your car are most likely not ground with lobes to operate over redline. This is why revving over redline will not help you make any more power.
Also, if you do not have upgraded valve springs, you can get a phenomena known as valve float. I can explain it if necessary, but I'm sure a quick Google search will alleviate any inquiries you may encounter.
LowSlowNeon, I'm not sure how exactly it puts more strain on things. I understand if you're talking bouncing it off the rev-limiter, but shifting at redline daily will do no more damage than regular driving. This all depends, however, on materials Dodge used to comprise the valve springs. There may be a certain fatigue stress played out in them as opposed to say Titanium valves, but that is beyond me. I digress...
Also, if you do not have upgraded valve springs, you can get a phenomena known as valve float. I can explain it if necessary, but I'm sure a quick Google search will alleviate any inquiries you may encounter.
LowSlowNeon, I'm not sure how exactly it puts more strain on things. I understand if you're talking bouncing it off the rev-limiter, but shifting at redline daily will do no more damage than regular driving. This all depends, however, on materials Dodge used to comprise the valve springs. There may be a certain fatigue stress played out in them as opposed to say Titanium valves, but that is beyond me. I digress...
Grand Champion
Joined: Jan 2004
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From: 45th parallel, MI
RE: Redlining *cringes and hides behind wall*
ORIGINAL: brute
The limiter isn't there to protect the tranny, persay, but without a properly built motor, it can hurt other things. Depending on whether the engine is oversquare or undersquare (relating bore size to stroke length in milimeters), the only thing preventing high-revving are the components in the head, namely the valve springs and camshafts. The camshafts in your car are most likely not ground with lobes to operate over redline. This is why revving over redline will not help you make any more power.
Also, if you do not have upgraded valve springs, you can get a phenomena known as valve float. I can explain it if necessary, but I'm sure a quick Google search will alleviate any inquiries you may encounter.
LowSlowNeon, I'm not sure how exactly it puts more strain on things. I understand if you're talking bouncing it off the rev-limiter, but shifting at redline daily will do no more damage than regular driving. This all depends, however, on materials Dodge used to comprise the valve springs. There may be a certain fatigue stress played out in them as opposed to say Titanium valves, but that is beyond me. I digress...
The limiter isn't there to protect the tranny, persay, but without a properly built motor, it can hurt other things. Depending on whether the engine is oversquare or undersquare (relating bore size to stroke length in milimeters), the only thing preventing high-revving are the components in the head, namely the valve springs and camshafts. The camshafts in your car are most likely not ground with lobes to operate over redline. This is why revving over redline will not help you make any more power.
Also, if you do not have upgraded valve springs, you can get a phenomena known as valve float. I can explain it if necessary, but I'm sure a quick Google search will alleviate any inquiries you may encounter.
LowSlowNeon, I'm not sure how exactly it puts more strain on things. I understand if you're talking bouncing it off the rev-limiter, but shifting at redline daily will do no more damage than regular driving. This all depends, however, on materials Dodge used to comprise the valve springs. There may be a certain fatigue stress played out in them as opposed to say Titanium valves, but that is beyond me. I digress...
And brute...so are you saying an engine with 150,000 miles on it would be as good as one that only has say 50,000 miles? Because that is essentially what you are saying that I can beat the **** out my car day in day out and it won't make a difference.
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Champion
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RE: Redlining *cringes and hides behind wall*
The harder you drive a car the less time it'll last.
I have my motor built up and with my AFX race pcm, I wont bother taking it near 7800 rpm. When I first got my AFX pcm which was before I went into the engine, I decided to take the car to about 7400 rpms. It smelled funny afterwards. I guarantee you the engine wont last as long doing that.
I have my motor built up and with my AFX race pcm, I wont bother taking it near 7800 rpm. When I first got my AFX pcm which was before I went into the engine, I decided to take the car to about 7400 rpms. It smelled funny afterwards. I guarantee you the engine wont last as long doing that.
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Captain
Joined: Feb 2007
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From: NE Ohio
RE: Redlining *cringes and hides behind wall*
Maybe brute thought you meant that actually HITTING the redline cause more damage and not being at high RPMs. Which was basically my question. Thanks guys. This is really what I thought in the first place but I just wanted to make sure. It would suck if I did it and THEN found out something bad just happened.
lblackneon! You are the one that said that. You were going to be one of my points in the topic. I remember you saying that it smelled funny afterwards.
But to support lowslow...My little brothers friend's math teacher races indy cars. He said that they dump their engine after each race. Now...I really don't believe that 100%. I think the kid just got confused. He also said when you heel-toe shift you don't use the clutch...that defeats the purpose haha. So I believe that they dump something but maybe not the whole engine. Anyways, they race that so hard that after each race they need to replace something. You don't get that after driving your street car for a few weeks even.
Thanks again guys
lblackneon! You are the one that said that. You were going to be one of my points in the topic. I remember you saying that it smelled funny afterwards.
But to support lowslow...My little brothers friend's math teacher races indy cars. He said that they dump their engine after each race. Now...I really don't believe that 100%. I think the kid just got confused. He also said when you heel-toe shift you don't use the clutch...that defeats the purpose haha. So I believe that they dump something but maybe not the whole engine. Anyways, they race that so hard that after each race they need to replace something. You don't get that after driving your street car for a few weeks even.
Thanks again guys
Captain
Joined: Dec 2006
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From: Chattanooga, TN
RE: Redlining *cringes and hides behind wall*
yup yup....I like what everybody has said thus far...my 2 cents are simply run very good oil if you want to hit redline....I have the srt-4 gauges in my car so it appears that i redline at 6,000 rpm instead of the actual 6,500...so i scare people when i go 500 rpm over redline LOL and everything is indeed fine...as long as you take care of your motor hitting redline is fine and I would agree with Brute that it doesnt do much more damage...BUT IM NOT SAYING DRIVE EVERYWHERE hitting redline thats a obvious "no no" and I agree with lowslow that your motor wouldnt last as long...but the occasional redline I would say is fine...cleans out your fuel injectors LOL.....i wish i could forge my internals and get a cam..i wouldnt worry much about redline then...