rev limiter
Thread Starter
Instructor
Joined: Apr 2010
Posts: 170
Likes: 9
From: Kings Mountain, NC
rev limiter
hey guys,
i have a stock 2008 c6 corvette with a exhaust. (its an automatic) im wondering about the rev limiter when reving in park or neutral. it cuts out at about 4000 rpm, i was curious if there was a way i could remove this factory setting, any suggestions?
thanks
i have a stock 2008 c6 corvette with a exhaust. (its an automatic) im wondering about the rev limiter when reving in park or neutral. it cuts out at about 4000 rpm, i was curious if there was a way i could remove this factory setting, any suggestions?
thanks
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
hey guys,
i have a stock 2008 c6 corvette with a exhaust. (its an automatic) im wondering about the rev limiter when reving in park or neutral. it cuts out at about 4000 rpm, i was curious if there was a way i could remove this factory setting, any suggestions?
thanks
i have a stock 2008 c6 corvette with a exhaust. (its an automatic) im wondering about the rev limiter when reving in park or neutral. it cuts out at about 4000 rpm, i was curious if there was a way i could remove this factory setting, any suggestions?
thanks
Safety Car
Joined: Nov 2010
Posts: 3,725
Likes: 84
From: Woodlands (houston) TX
why the hell would you want to do that!!!! that is a terrible thing to do to your motor. sitting there reving it up with no load on the engine is a horrible idea. what are you tryin to impress a 14 girl or something. revving a engine like that with no load on it puts horrible stress on your rods and bearings. i bet your doing it on a cold engine to. that is one of the worst things you could do to a engine. and for anyone who dosnt beleive me or understand feel free to call texas speed, lme, nelson, lingenfelter any shop that has a good rep.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Yes you can. There are two rev limiters, a normal one for each gear incl. park/neutral, and a secondary acceleration based rev limiter.
Not everybody knows about the acceleration based rev limiter. Here is where you find it in the tune.
Ranger has also reported that another rev limiter exists if you don't have the clutch fully out so that the clutch switch is closed. I've not run into this one but more discussion here.
http://forums.corvetteforum.com/c6-z...-1st-gear.html
Edit I see you have an automatic. I really wouldn't free rev that automatic that high...they are pricey if they go out. Took me 3 tries to get a good rebuild when I broke my manual..and they aren't cheap or easy to replace.
I think the overall point here is that it's not a good idea to free-rev your engine that high, if GM puts 3 different controls on the car to keep you from doing it!
Not everybody knows about the acceleration based rev limiter. Here is where you find it in the tune.
Ranger has also reported that another rev limiter exists if you don't have the clutch fully out so that the clutch switch is closed. I've not run into this one but more discussion here.
http://forums.corvetteforum.com/c6-z...-1st-gear.html
Edit I see you have an automatic. I really wouldn't free rev that automatic that high...they are pricey if they go out. Took me 3 tries to get a good rebuild when I broke my manual..and they aren't cheap or easy to replace.
I think the overall point here is that it's not a good idea to free-rev your engine that high, if GM puts 3 different controls on the car to keep you from doing it!
Thread Starter
Instructor
Joined: Apr 2010
Posts: 170
Likes: 9
From: Kings Mountain, NC
right,
i mean jackass up above me didnt have to flip out like he did, i no its not good, but it happens occassionally, just like burnouts and stuff, there not good either but i still do them, we all do them. thanks for the tips.
i mean jackass up above me didnt have to flip out like he did, i no its not good, but it happens occassionally, just like burnouts and stuff, there not good either but i still do them, we all do them. thanks for the tips.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
If you're doing a burnout you should be able to rev up to 6600, unless you're doing the burnout in the snow or the water box where you accelerate really quickly - then the secondary rev limiter will kick in. It's there to make sure the engine doesn't over rev 6600 as your valve springs won't like that...and if you drop a valve you'll be buying an engine. They don't like kissing the pistons!
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
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Safety Car
Joined: Nov 2010
Posts: 3,725
Likes: 84
From: Woodlands (houston) TX
i know things happen time to time but why turn the rev limiter up to do it on purpose if your not doing it to unlock it for a 2 step or something then its a stupid ideal for a street car
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
I'm a pretty active drag racer, and I can tell you, it's not a great idea to hit the rev limiter, ever. It kills your run if you hit it, and it's just hard on the car to do it during a burnout.
There's really no need to ever hit the rev limiter. It it's kicking in at 4000 rpm free revving in neutral, it's doing that for a reason. While you could change it with a tune...I wouldn't recommend it, particularly on factory single valve springs.
There's really no need to ever hit the rev limiter. It it's kicking in at 4000 rpm free revving in neutral, it's doing that for a reason. While you could change it with a tune...I wouldn't recommend it, particularly on factory single valve springs.
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
I'm a pretty active drag racer, and I can tell you, it's not a great idea to hit the rev limiter, ever. It kills your run if you hit it, and it's just hard on the car to do it during a burnout.
There's really no need to ever hit the rev limiter. It it's kicking in at 4000 rpm free revving in neutral, it's doing that for a reason. While you could change it with a tune...I wouldn't recommend it, particularly on factory single valve springs.
There's really no need to ever hit the rev limiter. It it's kicking in at 4000 rpm free revving in neutral, it's doing that for a reason. While you could change it with a tune...I wouldn't recommend it, particularly on factory single valve springs.
Safety Car
Joined: Nov 2010
Posts: 3,725
Likes: 84
From: Woodlands (houston) TX
right they are not stock. they have engines built to handle the added stresses and they arent revving that high they are using a two step limiter. probaly still only turning around 4000to 5000 rpm at launch
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
But I've got a stock clutch. Others may have different results with aftermarket clutches. Mine won't hold a 7100 launch (my rev limiter).
Once underway, you never want to hit the rev limiter. It'll kill your ET.
The OP's an automatic...there's no reason to ever hit the limiter on an auto IMHO. And free revving an engine to redline just is a bad idea. You can 'rap the pipes' very nicely and keep it a lot lower than redline!
Here's a good launch off the rev limiter. Rob never told me how many rears he went though but for sure, he's one of the fastest (and a very helpful guy).
Of course, that rev limiter is a 2 step it seems.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
This is me in the far lane launching at 6300 rpm. Speaking of rev limiters, I tapped it in 1st, killing my 10 second slip. It's hard to hear it over my buddy's Bee.
