Quick rev limiter question
Thread Starter
Burning Brakes
Joined: Jun 2007
Posts: 823
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From: Seguin Texas
Quick rev limiter question
I had my Vette tuned a couple years ago by a very well known tuner and I notice he bumped the rpm limiter to 7100rpm's. It was explained to me this is done to keep fuel from being shut off. Is this a problem for the LS3? (valvefloat,etc). I honestly am not sure.
Drifting
Joined: Sep 2000
Posts: 1,456
Likes: 5
From: Bothell WA
If it were my car, I wouldn't raise the rev limiter above GM's stock value unless I was very sure what improvements were made to the engine that would allow it to rev higher. If the motor was rebuilt with better valve springs, lighter valves, stronger connecting rods, and lighter pistons, and the builder stood behind their work, then I'd consider raising the rev limiter. If you haven't strengthened the engine, then in my opinion, you're asking for trouble down the road.
- Mark
- Mark
Le Mans Master
Joined: Jun 2007
Posts: 7,610
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I had the limits completely removed (and the tables rebuilt) on my ls2 almost 5 years ago and have never had any negative issues. On the positive side, that annoying limiter doesn't pop in at the worst times and screw up my accelerations - almost caused me to crash once!
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
I had the limits completely removed (and the tables rebuilt) on my ls2 almost 5 years ago and have never had any negative issues. On the positive side, that annoying limiter doesn't pop in at the worst times and screw up my accelerations - almost caused me to crash once!
What!! The other guy almost rear ended you??
I have hit the 7K rev limiter in my Z in all the gears up through 4th and did the same with my two C5s and their rev limiters. Never disturbed any of them. All they did was stop accelerating like they would if they didn't have enough power to twist any more.
Bill
Thread Starter
Burning Brakes
Joined: Jun 2007
Posts: 823
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From: Seguin Texas
Thanks guys. I wonder why nobody has brought this up before as one of the biggest tuners on here did the work? Why would this be accepted on so many cars if it could be a prob. Maybe it's simply not a problem?
By the way, he isnt the only tuner that does this.
By the way, he isnt the only tuner that does this.
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Le Mans Master
Joined: Jun 2007
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Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,820
From: Charlotte, NC (formerly Endicott, NY)
Woosh over the head!!!
The only reason I could think of that you would have an accident would be the car slowed and the car behind you almost hit you. The rev limiter doesn't cut in in such a way that you should have trouble controlling the car other than slowing down.
Bill
The only reason I could think of that you would have an accident would be the car slowed and the car behind you almost hit you. The rev limiter doesn't cut in in such a way that you should have trouble controlling the car other than slowing down.
Bill
Le Mans Master
Joined: Jun 2007
Posts: 7,610
Likes: 12
Woosh over the head!!!
The only reason I could think of that you would have an accident would be the car slowed and the car behind you almost hit you. The rev limiter doesn't cut in in such a way that you should have trouble controlling the car other than slowing down.
Bill
The only reason I could think of that you would have an accident would be the car slowed and the car behind you almost hit you. The rev limiter doesn't cut in in such a way that you should have trouble controlling the car other than slowing down.
Bill
I should say that I have an aftermarket trans that is tuned for long pulls between shifts. The rev limit points needed to sync with the tune, but were difficult so in the end it was easiest to eliminate them.
If you're the type of driver that rarely hits the rev limit, then I guess it wouldn't seem to be an issue for you. For me it was.
Last edited by keyplyr; Feb 22, 2011 at 01:51 AM. Reason: fix typo
Safety Car
Joined: Nov 2006
Posts: 3,860
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From: Tampa FL
Woosh over the head!!!
The only reason I could think of that you would have an accident would be the car slowed and the car behind you almost hit you. The rev limiter doesn't cut in in such a way that you should have trouble controlling the car other than slowing down.
Bill
The only reason I could think of that you would have an accident would be the car slowed and the car behind you almost hit you. The rev limiter doesn't cut in in such a way that you should have trouble controlling the car other than slowing down.
Bill
Rev limiter causes your car to gently slow down due to fuel being cut off. Losing control involves loss of traction. I don't see one causing the other.
Last edited by goatts; Feb 22, 2011 at 01:03 PM.
