Is it bad to redline?

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Post by DocPHD » Mon Oct 08, 2007 3:31 am

hai1206vn wrote:
eaglecatcher wrote:I shift about 4200 for max performance,because I don't get any hp once I'm in the 4k range, so its best for me to shift then, plus I land in a decent spot in the next gear, so it all works out.
Don't know about your engine and tranny, 4k might be a bit early. Sure the torque there is falling, but power may still be before its peak.
true, but the power will start to increase more slowly. between 3k and 4k you might have a 50 horsepower gain (imaginary car, don't worry) but between 4 and 5k, you might have a 30 hp gain. not really worth it. that's between you and your car. discover it today at your local Dyno tester! j/k, but if you're serious, go for it. (i find it WAY too expensive for them to just sit there and burn my gas up)

anyways, if you want an engine that you can redline try one of GMs LS series. tested at max RPMs for several hundred hours nonstop. i'm sure FMC's got something like that, although i haven't looked it up (chevy man, myself).

anyway, the only thing it's probably going to hurt is your 1/4 mile time. shifting late loses power, but not nearly as badly as shifting early. find the "sweet spot" and you'll be all good.
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Post by tehfade » Mon Oct 29, 2007 7:11 pm

I always heard the best place to keep the engine was between the HP and torque peaks. I don't even think about it though....if I'm accelerating hard, I'll tend to shift at ~6000.

Redline in my car is 6250, but there are people who'll wring their modded LS1s out to 7000+ and they seem to take it OK.
I drive a Phantom Black 2005 GTO M6. I commute in a 2003 Jeep Grand Cherokee Limited.

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Post by hockeystyx16 » Tue Oct 30, 2007 2:57 am

my redline is 7k, i take it up to 6k pretty much daily. i start to get valve float around 65, so theres not much point in being up there.
runs great. knock on wood.
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Post by El Beefo » Tue Oct 30, 2007 3:28 am

Haha, valves...
My motor goes round and round, not up and down.

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Re: Is it bad to redline?

Post by acucivic » Sun Sep 14, 2008 11:06 pm

I rev my civic Si 07 to 7k or 8k sometimes its a nice rush, if i dont do it like every time i drive its no biggie right?

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Re: Is it bad to redline?

Post by watkins » Sun Sep 14, 2008 11:14 pm


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Re: Is it bad to redline?

Post by Bawked » Mon Sep 15, 2008 5:40 am

gahhhhhhhhhhhhhhh its back from the dead!!!!!!!!!!!! :lol:
<3 fwd

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Post by noob5,000,000 » Mon Sep 15, 2008 3:20 pm

El Beefo wrote:Haha, valves...
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