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View Full Version : how bad is it to red line?



johnwc723
02-27-2004, 11:43 PM
well i personally have never hit the red line before, i always keep it about .5k before it even if im racing. is it that bad to hit it or exceed it i have always been scared of the red line personally!

Blue Impact
02-27-2004, 11:56 PM
Just don't do it.

riced_roach
02-28-2004, 12:00 AM
exceed redline and you end up with Valve float and more than likely your HP and torque curve plateau's. It gets to the point that you actually just slow down since more than likely your only running a stock duration camshaft. Also with higher mileage your valve springs wont control the valve as well as a new set of valve springs.

Nothing to laugh at when you lose a valve keeper and your valve contacts the pistons. Bent valve is no laughing matter.

od2681
02-28-2004, 12:05 AM
i dont know if this is true..but i read somewhere that max hp of our cars is sround 5200 rpms or 5800 ...im not quite sure

BensAccordLxi
02-28-2004, 12:09 AM
I took my Accord to 6,800RPMs daily. I also had a cam where the power droped off at 6,800.

pimp86LX
02-28-2004, 12:11 AM
i dont know if this is true..but i read somewhere that max hp of our cars is sround 5200 rpms or 5800 ...im not quite sure

i believe 5500, 5200 is a constant used for calculating....or...its where the hp and tq are supposed to cross.......or something funny like that. sorry my memory sucks at 3am.

MilTownSHO
02-28-2004, 04:35 AM
I took my Accord to redline a few times, didn't seem to do anything.

I take my 92 SHO to redline almost daily, its a blast taking it up to 7300 shifting and ripping the tires open :cool2: Been doing this for 20k miles I've had it, no problems. Has 162k on it now.

johndej
02-28-2004, 08:06 AM
the point of shifting after red line is so that you drop to a point closer or on the peak horse power in the next gear. i don't think it does too much other then the valve float peeps were talking about before if you go past redline. its just a shift at this point if you don't want to blow your engine spot.

Rendon LX-i
02-28-2004, 08:19 AM
my car been redline i dont know how many times. and it still has the power it has. i think the a20a3 broke in. cuz it seems like it has more.

dXsquared
02-28-2004, 08:28 AM
i shift at 6500, and the revs shoot to 7g's and then back to 5700ish and it pulls strong after that... i keep my foot on the gas when shifting from 1st to second,,, shifting takes my about .3 seconds

Travis

Bloodlust
02-28-2004, 08:49 AM
Ive never redlined because i have an automatic. I get up to about 6k max and thats about it. I probably could go further i just dont want to beat the shit out of my car.

easyryder
02-28-2004, 11:28 AM
the point of shifting after red line is so that you drop to a point closer or on the peak horse power in the next gear. i don't think it does too much other then the valve float peeps were talking about before if you go past redline. its just a shift at this point if you don't want to blow your engine spot.


Better yet get some better gears and/or tranny so you can stay in the sweet zone without buzzing it as hard

johndej
02-28-2004, 12:23 PM
ha, i can hardly drive hard at all in the accord. last time i was auto crossing, my dad was driving and messed up on the 1st -2nd shift, it wasn't all the way in gear, so it grinded really hard and bent a syncro maybe (gotta get it checked out), so i've got to shift before like 3.5K (which is fine for normal driving) to keep it from making strange noises.

bobafett
02-28-2004, 12:30 PM
i take my car way up past 5k daily, and to redline every couple of days.

my car has 250,000mi and was driven agressivly by my dad before me..
although his personal reline for the 3g was 5000rpm, he went up there often.

i figure once this motor goes i will just get another one, so i might as well enjoy it. ;)

86LXItooFAST4me
02-28-2004, 12:33 PM
what exactly is a syncro tranny aned the double clutch thing where (from what ive heard) you shift into neutral rev and then the next gear, are these automatice or stand? how do they work, what is the pupose?

johndej
02-28-2004, 01:45 PM
syncros line up your gears for you when you shift up or down in a MANUAL car. in a non syncro car (mostly big trucks or old cars), you've gotta put the car in neutral, let the clutch out, put the clutch back in, then put it in the next gear when ever you shift. its a real pain in the ass and slows you down (dispite what F&F say). i'm at the point where i have to do that sometimes going from 1st to 2nd.

accordlxi2.0
02-28-2004, 04:28 PM
HEY! auto can redline too ya know.
:cool2:
well mine does when she want's too.
i've revved to 8grand at least 3 X's already.
but when it does touch the redline the power drop's quickly.

Neuspeed87lx
02-28-2004, 10:13 PM
i hit red line every day in my civic .... it has 250,000 miles on it .... there are no problems with it at all .... it likes it .... its not awful for it .....

AccordEpicenter
03-02-2004, 07:22 PM
you can powershift, thats ok, but if youre carbed keep it lower than 7-7250, after that your begging for trouble. EFI guys dont worry about it.. the rev limiter should intervene at 6800 or so. Ive taken carbed engines to 7850 rpm and i overreved my 95 accord to 8k and have also taken an integra to well over 9k but those were on missed shifts...

accordlxi2.0
03-02-2004, 07:33 PM
hey! why do us carb guy's have to worry, plus my lxi never had a rev limit.

KoNEY
03-02-2004, 07:53 PM
because the carb will keep on climbing, there's no limiter like on the EFI models

accordlxi2.0
03-02-2004, 07:57 PM
oh cooooollllll!!!!

my86dx4dr
03-02-2004, 08:02 PM
i have taken mine to 6k and i think to maximize it i would shift at 5500
6 k seemed to be the peak, anymore then that and its worthless IMO

AccordEpicenter
03-02-2004, 09:10 PM
yea there is generally no point to shift higher then about 6k or 6200... peak power is like 5500 or so and shifting 500 rpm past peak power is a good practice so there you go.

BITESIZE
03-03-2004, 08:53 AM
Mine has beastly power to 6,500... I don't understand how everyone elses cars can't have more power after 5,500?

my86dx4dr
03-03-2004, 01:20 PM
you got more posts then me im not gonna pick this bone with you.................
anyone else with more seniority got the balls to tell him why thats :bs:
LOL :help:

HostileJava
03-03-2004, 01:31 PM
Ive never redlined because i have an automatic. I get up to about 6k max and thats about it. I probably could go further i just dont want to beat the shit out of my car.

You just don't know how to drive it man, I redline my auto all the time. I've hit the rev limiter about 10-15 times now, each time i do it, it scares the shit outta me.

bobafett
03-03-2004, 02:10 PM
Mine has beastly power to 6,500... I don't understand how everyone elses cars can't have more power after 5,500?

most peoples cars on here are really close to stock, yours has a few performance mods

with just IHE the power is there until redline...
when i drove a stock 3g compared to mine its amazing how the power just kind of falls flat, but a modded one pulls strong as long as you want it to.

AccordEpicenter
03-04-2004, 01:31 PM
yeah and its incredible that 4th and 5th gen accords stop pulling way sooner, my 4th gen fell flat at about 5000 and my 5th gen stopped pulling around 5500... my 3rd gen pulls to about 6100-6200

1989 DX R
03-04-2004, 02:30 PM
I didn't redline my 89, but I do it when I want the most power out of my 2001, and when I drove my dad's 2004 V6 you want to redline it all the time. That motor <3's the redline.

johnwc723
03-05-2004, 11:16 AM
i have only really hit the redline once i guess, and that was when i was learning to drive stick, i let out the clutch going quite fast in like 1st or second gear and put it well over the redline.....

Raduque
03-05-2004, 01:23 PM
After replacing the water pump, I and my father took my 88 LXI for a test drive and wound each gear out to the redline on a small, long, straight backroad. It pulled all the way to the redline, too, and seemed to want more. Car is bone stock as far as I know. The only thing I've done to it was stereo mods, ECT sensor and water pump. This was before the tranny died, now I'm afraid to take it over 2k except in 3rd.

accordlxi2.0
03-05-2004, 02:01 PM
don't baby it too much.
one mechanic website or was it tha new's paper.
well they said that it's not best to driving slow,
it never hurt's to floor it once in a while like once a week.
unlike me everyday.

BMS
03-05-2004, 02:14 PM
Jesus, so many posts of 5k or more! The only time that I even get it above 3k is when I'm getting on the freeway, and even then it's usually never above 4.5k. Why the hell do you go so high? It's completely not neccessary. I saw one post a while back that said "I go to 4500 for power". I go to 3.2k and have plenty of power for normal driving.

I redline once per two weeks, at the most. And that's usually in 2nd.

jigga225
03-06-2004, 12:54 PM
i hit red line every day in my civic .... it has 250,000 miles on it .... there are no problems with it at all .... it likes it .... .....


HAHAHAHAHHAHA
MAN WHADELVA!!!!

diegoaccord
03-08-2004, 03:59 AM
In my 91 Corolla, It had no tach, I hit rev limit all the time, had 220K, no problems.

In my 1st 89 Accord DX, I went PAST 8000 regularly. had 169K, no problems

In my 89 CRX DX, I went to 6700 regularly. 179K, no problems

In my 95 Neon SOHC, I went to 7000 regularly, got valve tick, but no power robbing problems. 114K. Did break motor mount, with constant drag shifting.

In my 2000 Si, I went to 8200 regularly. 29K, no problems. God I loved this machine.

In my "new" 89 DX, I also go past 8000, 154K. No problems.

Yes I abused all of my cars. They took it. Each car I had, I ALWAYS went beyond the redline. In fact, I chose another carbed 3G Accord, just because I knew it would run with the tach beyond the "8", infact, I'd say that I've probably done as much a 9K. Does it make power up there? Hell no, but carb guys, take your exhaust off behind the manifold, and drive with load on the motor to 8K, you'll love it. Shit, if the A20A1 blows, that'll be more reason to sawp a B16A...

I guess driving my parent's automatic's from the age of 15-17, had me ready to beat on a stick car of my own.

accordlxi2.0
03-08-2004, 12:05 PM
hmm all those honda's no problem but that dodge neon ya got valve tick.
this happened on my cougar except the redline was 5 and the rpm limit was 6.

diegoaccord
03-09-2004, 07:14 AM
Yeah. The SOHC 1G Neon's valvetrain is a nightmare for revs, but I was happy as long as I didn't lose power, or blow it.

But seriously people, any car will live going beyond it's redline, even in harsh conditions.

My CRX DX. One day, I had put a quart of oil in it. It was a 90 degree day, I left the oil cap off(accident). Keep in mind that this car had a severe VC gasket leak. I raced people non stop(constant redline) in 90 degree ambient temps, until I saw smoke coming from my hood. I thought my car was done, until I saw that I left the cap off. Oil was covering the engine, it was HOT, it had been at redline at least 50 times. I put the cap on, let it cool, and continued to race, and then drove from Cincinnati home to the Fairfeild area, on I-75 doing about 100.

So you people that need to baby your car because youre scared, DONT. It'll take it. In the 7 months I had it, my CRX took more abuse than anyone "should" ever give a car in a lifetime. But then again, I abused it because I thought I was getting a ZC, or B16A.

Abuse you Accords freely. I do.

accordlxi2.0
03-09-2004, 04:22 PM
i'm . . . . so proud.

ehulst
03-09-2004, 05:18 PM
my car red lines most morings when its not warm......I hasvent had a problem with it....but i wouldn't recomend doing it all the time tho.....

accordlxi2.0
03-09-2004, 05:58 PM
i would'nt do that either. i don't take my car above 2,000rpm's when the engine's cold.

jayp6969
03-09-2004, 06:24 PM
i have but only when racing :)