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Old 03-14-2008, 08:16 PM   #1
Veloxity
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Default is reving to redline bad?

i was wondering if reving the car to redline bad for the engine. i always had in mind that redlining is harmful to the engine cuz someone told me that long time ago, but i came across some tuners today and they all told me that redlining doesnt do any harm to the car. he added that if you dont red line your car it would loss hp. im driving a wrx 07 and my red line is at around 6500rpm. i tried reving to 6000 once on 2nd gear and damn it goes to 100km/h.
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Old 03-14-2008, 08:19 PM   #2
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"revving"? you mean DRIVING. the person who told you that cars LOOSE hp is the dumbest man alive. hotrodding your car isnt necessarily bad for it, its just not good in large amounts or if your an idiot about it. no worries your car can take it. have fun! dont talk to those dip**** "tuners" again haha.
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Old 03-14-2008, 08:21 PM   #3
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redlining is not a problem for your motor. Well as long as you are not doing it constantly all day everyday. What a rev limiter is is the computer shuting spark/fuel of to random cylinders to PREVENT damage. It is there for a reason and hitting your rev limiter every once inawhile never killed anyone. My buddy has a supercharged Tocoma and he hits the rev limiter like everyday and he has got like 200k on it with no issues.
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Old 03-14-2008, 08:22 PM   #4
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lol i see. thnx!!
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Old 03-14-2008, 08:25 PM   #5
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If you do it all the time, it can be a bad thing, but once and a while it would actually be beneficial as it can clear out some carbon build up.
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Old 03-14-2008, 08:29 PM   #6
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if i had a nickel for every time i bounced off the rev limiter.....
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Old 03-14-2008, 08:30 PM   #7
whitebugeye
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just let the engine warm up first.
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Old 03-14-2008, 08:43 PM   #8
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Quote:
Originally Posted by dantastic View Post
if i had a nickel for every time i bounced off the rev limiter.....
Tell me about it
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Old 03-14-2008, 08:54 PM   #9
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I have had the same idea that it was bad for it, not sure why I thought this. People have told me that its fine once in a while so I guess why not do it? its fun right?
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Old 03-14-2008, 08:54 PM   #10
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I take mine right to redline when I get on it. I will run hard through 2nd an 3rd atleast 5 or 6 times a week(I have a feeder next to my house that makes for a perfect 30-75 run). Its good to drive the car a little hard(not like a jackass, but cmon, you bought a scoob for a reason...). A friend of mine has a 07 sedan that has 9K more miles than mine, but he babies it. We did a 40 run. I let him have the jump, I was half a car back, an I actually put a car on him. Not sure if it was driver or not, but we were shifting about the same time, an we have the exact same mods(both have borla cat back an snorkus delete).

Floor it every once in a while. Your car will thank you.
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Old 03-14-2008, 08:59 PM   #11
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The definition of Redline is is the highest point at which you stop making useful HP. IF your already on curve down on a plot for WHP at 6000RPM's then why stress your car out another 1000RPM's ??? Just to say you rev to 7000?? On the other hand I'll take 380WHP all the way to 8000RPM's anyday over 400WHP thats on its decline at 7200rpms.

My engine was built for 8500 RPM redline, but my turbo and heads can't make useful power that high. Right now I am at 7200RPM's but I make power all the way to it. I am still dialing my power in but plan on 7500RPM's at making 380WHP to 400WHP. Once I get the built heads P&P and larger valves with 272/276 cams I will easily tune it past 8000RPMs.

Last edited by 4ST-AIR; 03-14-2008 at 09:06 PM.
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Old 03-14-2008, 09:01 PM   #12
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Sounds like some people need to learn throttle control and to watch/listen to their tach.

Like others said, redlining is not bad. The engine is designed with a certain level of safety. With this being winter time, it's smart to have the engine warm before hard driving. You also don't necessarily want to sit at redline for say 20 minutes constantly.

The only real dangers you have is heat and any form of shock loading. This isn't specific to the engine but all hardware: engine, clutch, gears, etc.
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Old 03-14-2008, 09:09 PM   #13
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I redlined my old 02 multiple times a day for 110,000 miles. Thad was an automatic and was too easy to do. Now woth my 06 5 speed the fuel cut comes so fast in first gear it's hard to not hit it but I'm getting used to it. My dad had an 00 Civic SI that reved to 8000 and sounded so good with an intake that he reved it all the way every time he drove it. So I think you'll be okay. It's the smooth shifting you have to be careful of. I miss my dads Civic cuz the tranny was so buttery smooth into any gear at any speed you could realy bang into the gears hard barely having to lift off the thrttle.
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Old 03-14-2008, 09:12 PM   #14
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Aslong as you don't bounce off the rev limiter then you are good to go! 2.5L don't like to rev too high with stock internals.
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Old 03-14-2008, 11:12 PM   #15
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higher revs = more stress on tranny and engine, so i wouldn't do it too much.....


after reading this thread and seeing what people actually do to their cars... it is the same exact reason why I do not buy used "sporty" cars with miles more than 28-30k lol
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Old 03-15-2008, 12:07 AM   #16
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Quote:
Originally Posted by 4ST-AIR View Post
The definition of Redline is is the highest point at which you stop making useful HP.
Redline = maximum designed engine speed that is considered safe. There are plenty of motors that stop making "useful" power well before redline.





Quote:
Originally Posted by Back Road Runner View Post
Sounds like some people need to learn throttle control and to watch/listen to their tach.
On a fast auto-x course, I bounce off the rev limiter b/c it takes too long to shift, etc.




Quote:
Originally Posted by mugenXP View Post
after reading this thread and seeing what people actually do to their cars... it is the same exact reason why I do not buy used "sporty" cars with miles more than 28-30k lol
heck, I used to rev the heck out of my old Accord... I'll only buy used cars from people I know or grandmas



driving in the upper RPM range for any amount of time will cause accelerated wear. that being said, i bought my car to drive the snot out of it. if it blows up, i'm going to rebuild with a 2.5 short block, etc. you gotta pay to play!
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Old 03-15-2008, 12:45 AM   #17
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buummp......homework for everyone go out and redline your car!
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Old 03-15-2008, 01:35 AM   #18
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is this really a serious question? ha!
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Old 03-15-2008, 05:36 PM   #19
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you bought a cars to have fun with right? So have fun.If you want a cars that is reliable buy another cars that is your commuter.
drive the ******* out of it enjoy the pile of money with wheels
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Old 03-15-2008, 05:36 PM   #20
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And Damn That Rev Limiter !!
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Old 03-15-2008, 07:25 PM   #21
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Quote:
Originally Posted by DamnThatRevLimiter View Post
you bought a cars to have fun with right? So have fun.If you want a cars that is reliable buy another cars that is your commuter.
drive the ******* out of it enjoy the pile of money with wheels
your parents bought you your wrx, didn't they.
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Old 03-15-2008, 07:58 PM   #22
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Quote:
Originally Posted by tydawg2 View Post
"revving"? you mean DRIVING. the person who told you that cars LOOSE hp is the dumbest man alive. hotrodding your car isnt necessarily bad for it, its just not good in large amounts or if your an idiot about it. no worries your car can take it. have fun! dont talk to those dip**** "tuners" again haha.
Driving at very low RPM's all the time lets carbon deposits forum. Redlining will blow that stuff out. This is why an older person who putts around town all day will trade there car in and the next owner will complain of it feeling slow as if something is wrong or pinging very badly. Usually some sort of cleaner sucked through the vac lines will get it cleaned out and feeling 100% again...

Quote:
Originally Posted by 4ST-AIR View Post
The definition of Redline is is the highest point at which you stop making useful HP. IF your already on curve down on a plot for WHP at 6000RPM's then why stress your car out another 1000RPM's ??? Just to say you rev to 7000?? On the other hand I'll take 380WHP all the way to 8000RPM's anyday over 400WHP thats on its decline at 7200rpms.

My engine was built for 8500 RPM redline, but my turbo and heads can't make useful power that high. Right now I am at 7200RPM's but I make power all the way to it. I am still dialing my power in but plan on 7500RPM's at making 380WHP to 400WHP. Once I get the built heads P&P and larger valves with 272/276 cams I will easily tune it past 8000RPMs.
The definition of redline is the highest safest RPM for the mechanicals. I can strap on a gt40 turbo and find the motor will spin a bearing before peaking in power...

Also you have to watch the curve. Your right there might not be a reason to keep increasing the Rev's but its better to shift passed peak HP and drop back down onto peak rather then shifting out of peak power and dropping way off the peak....
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Old 03-23-2008, 05:24 AM   #23
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Is it normal to redline and smell something werid? Cause that happen once to me btw i drive a 05 RS with 70k
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Old 03-23-2008, 10:38 AM   #24
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Quote:
Originally Posted by whitebugeye View Post
just let the engine warm up first.
Don't go above 3K until you've warmed up or it's an emergency obviously. You know when your driving after you just start it up on a cold morning and it doesn't feel totally right? Don't redline then

Is it necessary to redline at every light? No, you use up more gas. But sure, it is fun at least once every trip somewhere.

Treat it right, but enjoy it.
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Old 03-23-2008, 08:40 PM   #25
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Quote:
Originally Posted by CynicX View Post
The definition of redline is the highest safest RPM for the mechanicals. I can strap on a gt40 turbo and find the motor will spin a bearing before peaking in power...

Also you have to watch the curve. Your right there might not be a reason to keep increasing the Rev's but its better to shift passed peak HP and drop back down onto peak rather then shifting out of peak power and dropping way off the peak....
Pretty much what I was trying to say.
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