matth76

As above how many of you hit the rev limiter? Just wondered as I hit mine today in my Hawkeye STI in 2nd gear but only by accident im my car as the revs rose so quickly and the car made what sounded like a blow off valve type sound and the usual red light rev limiter light came on. Is it a bad thing to do even on the odd occasion by accident (I assume it's fine as the rev limiter prevents any potential damage)?
Thanks for any info.

Jimbob

iTrader: (13)

Never been near mine, not sure where it is either.
Most power is well before Redline so I`ve usually changed well before 6500rpm.

stevebt

iTrader: (8)

I did it two weeks ago chasing after my mates Evo, it was in 4th gear and my limit is 8300rpm so its a bit bad but I was too busy trying to overtake than watch my rev counter


I was even listening to the engine but my peak power is around 8000rpm so it takes nothing to go past it when accellerating

CHOLTON

Pretty sure I set mine to 6500 rpm so I'd never redline it .

Darc174

iTrader: (13)

i dont hit mine much

but now and then wont hurt it

darc

Maz

iTrader: (34)

Easily done. I did it inadvertantly going up a slip road, didn't realise what had happened at the time just a slight jerk when the limiter cut in. Checked the psi monitor when I got home 8250 RPM whoops! Car was/is absolutely fine.

Loco

iTrader: (1)

I think the best way to answer this is to understand why the red line and the rev limiter are there:

- the red line is the point at which the pistons can start bouncing up and down on their own, not being pushed round by the detonation of fuel. hence why the red line varies for different engines, as it depends on engine size, balance, etc.
- the rev limiter is set on the ecu. old non-injection (carburettor) engines never used to have rev limiters because of the lack of ecu, but they were introduced on fuel injection engines where electronics play a much bigger role, to stop serious engine damage occurring.

so hitting the rev limiter from time to time will most likely make no difference at all. I would not recommend driving along constantly bouncing off it - but then again, you just wouldn't do that anyway!!

I have my rev reminder (red light) set at 6.5k, my red line starts at about 7.2k, and limiter is about 7.5k. I have hit the limiter once or twice, and i would say that if you only happen to hit it once or twice, then you really shouldn't worry about it, as that is why the limiter is there.

TonyBurns

iTrader: (3)

I have the buzzer set for 7k, gives me another hundred or so revs to change in

Tony

MDS_WRX

iTrader: (1)

I hit mine in 1st last week for the first time ever - on a mapping session with Duncan! At least he saw the funny side...

matth76

Thanks. Yes my thinking too. The car's designed to be taken to the limit and the red line is a precaution to stopping the car going over the limit. The revs rose so quickly in second or third gear plus I was looking at the road it had reached the limit before i realised (jerking me forward as I hit the limit as it will do when you hit the limiter). How do you change the time/revs when the red light comes on? I've tried twisting the "stick" on the left on the dashboard.

Loco

iTrader: (1)

you need the ignition switched on, but the engine off (can't remember it is first or second stage ignition, just try both to see which one it is). twist the left hand stick, and it will display the current rpm it is set at (for example, if it displays "65", it means it is set at 6500rpm). after selecting the desired revs by twisting the stick, leave it a few seconds, and it will beep. it now allows you to choose if you want an audible beep or not when you reach your chosen revs (ON means it is on, -- means the audible beep is off).

leave it a few more seconds until it beeps again, start the engine, and give it some revs to make sure it has worked properly!!

DT-SPD

iTrader: (7)

What is the fixed rev limit for a 2006 Hawk STi ??

Ive never gone over 6k in mine but have the warning set at 5.6k, just wondering if I should up it a bit.

Loco

iTrader: (1)

you should probably find out when your peak power is, because if you are changing too early, 2 things happen:

- you never achieve peak power, so your missing out!!
- your revs may drop a bit low when changing to the next gear, so you drop off the boost. I know that if I don't take mine to at least 6k when going from 4th to 5th gear, then it drops off the boost a bit due to the gear ratio's.

it's down to you when you shift gear, but if you want the most out of your car, you should shift somewhere around peak power, but high enough up the revs to make sure you stay on boost after the gear change.

DT-SPD

iTrader: (7)

I thought peak power was 5600rpm so thats where I set the warning light.

Having just looked at the marketing blurb for my car it lists peak power at 6000rpm , so looks like I will up the warning light a bit.

Thanks for the advice

Loco

iTrader: (1)

remember, the warning light is purely there just to remind you. i think my peak power is around 5800, but i have mine set at 6500. I dont always go all the way to 6500 when pressing on, but i just have it there to remind me when i have gone a bit too far. but as i said, its down to you where you set it!!

B0DSKI

iTrader: (17)

If you change at 5600Rpm the car won't be in the optimum revs in the next gear. Mine's set at 6800Rpm

bigarf

iTrader: (67)

i must have hit the rev limiter half a dozen times today,trying out some launches ready for tomorrow at york raceway.when the revs rise as fast as mine does in the first few gears its hard not to hit it.

stevebt

iTrader: (8)

What a load of bollox, I predict some bad times for you

Any side bets for SSO


Since the power was knocked down on mine it only runs 500lbs, it feels slow on launches but it seems easier to go thru the gears

sovietspybob

iTrader: (3)

Coming from my old car, Honda integra DC5 you were always around the red line and hitting the limiter several times a drive was just how you drove them! They produced peak BHP only a few RPM before the limiter which was 8600rpm but because VTEC engagement was at 6000RPM you had to always keep it between them so it was very easy to nudge the limiter.

Because of that ive never really had much of an issue hitting it every now and then but i am having to really adjust my driving style to not revving the absolute **** off it in the scoob as these engines probably weren't designed with driving constantly on the red line like the Honda's!

prodriverules

iTrader: (52)

Hit mine quite a few times,and like bigarf i did today on 3 occasions,i don't feel it will do any harm unless you hold it smashing the redline.

dunx

iTrader: (3)

A rev limiter won't protect your engine... ask any hatch owner !

If you select third instead of fifth, it will blow anyway.

I'm too busy with a Defi alarm going off every time I go over 2 bar, followed by the KS3 screaming about the "det"...

dunx

P.S. A well respected mapper once complimented me on my consistent shifts at 7400 rpm every time...

matth76

It looks as though the rev limit is around 7k but as mentioned above I think peak power comes in earlier than this.

Joe will

iTrader: (9)

i hit mine reguly at the 1/4mile, and rev it around to at least 6800 most gear changes to land the revs back on the turbo spooling.

Mifo

iTrader: (10)

Ive hit mine by accident once but the engine still works.

I barely go over 6.5 k as the power goes down after that anyhow, so no point revving much higher.

New_scooby_04

iTrader: (4)

Everyone has done it by accident

Bad idea to make a habbit of doing it on a 2.5 with standard pistons!

Pointless anyway as 2.5s have done there work by 6.5k. Set the change up buzzer for about then would be my advice

JDMs have a higher capacity to rev and develop their power higher up in the rev range, so worth going above 6.5k.

Best to stay away from the red line for any period of time.... I've seen what valve bounce can do to an engine - it bought tears to the eyes!

DannyM

hit it twice whilst going down a sliproad.



used hit it nearly every day in my rx8. love the sound of 10200rpm. its like an angry washing machine.

sovietspybob

iTrader: (3)

Skip to 2:20 Thats what i call red lining!

http://www.youtube.com/watch?v=nj2nlF1hkEc

Shaks-STI

iTrader: (7)

Few times on mine

matth76

Thanks for this. I've set mine to just a fraction over 6000 rpm hopefully giving me time to change gear in time I've also set it to make an audible beep which will be fun to test. Thanks again.

CHOLTON

When my missis was using mine whilst her car had some issues I set the rev light and beep nice and low around 4000 rpm , that way I know she panics and would change gear immediately .