Poll: Who has ever hit the rev limiter? - Page 13 - ZR-1 Net Registry Forums

WydGlydJim · 02-03-2015

I've ran right through 7000 RPM, and the car was still pulling strong with no drop off, then right through 8000 RPM accidentally, and I've bumped the rev limiter a couple of times when I wasn't paying strict attention....best I can tell, it is set at 8200 RPM on my car. After that, I called Lingenfelter, and they thought is would be fine to 7800 RPM normally.

Hog · 02-05-2015

I thought the chains became the limiting factor over 8000rpm as they will break due to the small diameter of the sprockets, which were designed small to fit the LT5 into the C4.(in the end the cam sprockets could have been a tad larger it was found)

The secondary chain lets go, and then due to the LT5 being an interference engine, valves start smacking pistons and carnage ensues.

Hitting the rev limiter induces no ill effects. The engine simply defuels allowing revs to decrease slightly, then refueling once again. Floating the valves (where the lifter actually loses contact with the camshaft lobe) would be difficult with stock parts that are working correctly.

5ABI VT · 02-05-2015

SO what im looking at is... theres 55 people so far who don't even know how fast their z is yet ? =D>

5ABI VT · 02-05-2015

In my opinion hitting the rev limiter is ok but of course repeatedly doing that does in my opinion stress the chain as the sprockets are slowing and accelerating the chain back and forth. Also not all engines have a rev limiter because the engine will not spin that high and explode. More so due to the fact that they are cammed for lower rpm and efficiency and mileage so the powerband is pretty much over so they just set the limiter where it needs to be. There are a lot of motors that can safely rev a LOT higher than a factory limiter like some of the jap cars (2jz etc) with no ill effects. They just crank the boost and up the rpm on a stock motor and away they go.

5ABI VT · 02-05-2015

Quote:

Originally Posted by 5ABI VT

Bumped it about 10x last week when I took it out. have to get a feel for where it is on the tach because they aren't exactly accurate. Pretty much figured it out now. I have no fear with this motor at all. if it blows up oh well stroker time

And just for the record I hit it twice because I needed to know where it was after all the mods lol.

Paul Workman · 11-15-2015

Quote:

Originally Posted by WydGlydJim

I've ran right through 7000 RPM, and the car was still pulling strong with no drop off, then right through 8000 RPM accidentally, and I've bumped the rev limiter a couple of times when I wasn't paying strict attention....best I can tell, it is set at 8200 RPM on my car. After that, I called Lingenfelter, and they thought is would be fine to 7800 RPM normally.

The question of tach calibration...comes to mind. (Mine would read "off the map" at the limiter due to calibrations error.)

32valvesftw · 04-29-2016

I agree with all in that hitting the rev limiter once or twice is not a big deal, but I think bouncing off the limiter as I see of the 4 cylinders do on launch make me cringe. Good think we have our friend Torque so we don't have do that.

8cam · 05-01-2016

Quote:

Originally Posted by 32valvesftw

I agree with all in that hitting the rev limiter once or twice is not a big deal, but I think bouncing off the limiter as I see of the 4 cylinders do on launch make me cringe. Good think we have our friend Torque so we don't have do that.

Are you sure you're driving the right car?

I have redlined mine many times and plan on hitting it a few times today - autocross this afternoon! Sure these engines make torque, but they live for revs. I agree a redline launch is totally unnecessary and probably not ideal, but get it on a road course and really work that last thousand rpm. It's awesome.

32valvesftw · 05-01-2016

Quote:

Originally Posted by 8cam

Are you sure you're driving the right car?

I have redlined mine many times and plan on hitting it a few times today - autocross this afternoon! Sure these engines make torque, but they live for revs. I agree a redline launch is totally unnecessary and probably not ideal, but get it on a road course and really work that last thousand rpm. It's awesome.

Yes Im driving the right car thanks very much.

Hib Halverson · 10-02-2020

When I owned Barney, I hit the rev limiter once in a while, mostly in first or second because I didn't properly anticipate the delay in the tach. What I wouldn't have given for an HUD back then.

As I ran my car on the chassis dyno enough to know where the engine made power and what the best shift points were, I almost never would tag the limiter intentionally. The Street Skinner engine in Barney which used stock manifolds and cats made right at 500-hp but it peaked at 6500 or so and was "all done" by 6800 and that's where I usually shifted such that after the shift I ended up down around peak torque.

With my current ZR1, Bad-Assed Bee, I'm always hitting the limiter in first and second if I'm manually shifting. Left in drive, the darn thing always shifts just before the limiter.

Innovation and Technology rears its ugly head.

View Poll Results: Have you ever hit the rev limiter?
YES	147	67.12%
NO	72	32.88%
Voters: 219. You may not vote on this poll

02-03-2015	#121
WydGlydJim Join Date: Jan 2008 Location: Wichita, Ks. Posts: 319	Re: Poll: Who has ever hit the rev limiter? I've ran right through 7000 RPM, and the car was still pulling strong with no drop off, then right through 8000 RPM accidentally, and I've bumped the rev limiter a couple of times when I wasn't paying strict attention....best I can tell, it is set at 8200 RPM on my car. After that, I called Lingenfelter, and they thought is would be fine to 7800 RPM normally. __________________ 2009 LS9 1990 LT-5/sold/Bought my Baby back 1994 Lingenfelter LT-5/sold 1973 LS4/sold Last edited by WydGlydJim; 02-03-2015 at 03:14 PM.

02-05-2015	#122
Hog Join Date: Jul 2010 Location: Woodstock, Ontario, Canada Posts: 1,275	Re: Poll: Who has ever hit the rev limiter? I thought the chains became the limiting factor over 8000rpm as they will break due to the small diameter of the sprockets, which were designed small to fit the LT5 into the C4.(in the end the cam sprockets could have been a tad larger it was found) The secondary chain lets go, and then due to the LT5 being an interference engine, valves start smacking pistons and carnage ensues. Hitting the rev limiter induces no ill effects. The engine simply defuels allowing revs to decrease slightly, then refueling once again. Floating the valves (where the lifter actually loses contact with the camshaft lobe) would be difficult with stock parts that are working correctly. __________________ peace Paul ZR-1 Net Registry Member #1494

02-05-2015	#123
5ABI VT Join Date: Jun 2013 Location: Toronto Posts: 783	Re: Poll: Who has ever hit the rev limiter? SO what im looking at is... theres 55 people so far who don't even know how fast their z is yet ? =D>

02-05-2015	#124
5ABI VT Join Date: Jun 2013 Location: Toronto Posts: 783	Re: Poll: Who has ever hit the rev limiter? In my opinion hitting the rev limiter is ok but of course repeatedly doing that does in my opinion stress the chain as the sprockets are slowing and accelerating the chain back and forth. Also not all engines have a rev limiter because the engine will not spin that high and explode. More so due to the fact that they are cammed for lower rpm and efficiency and mileage so the powerband is pretty much over so they just set the limiter where it needs to be. There are a lot of motors that can safely rev a LOT higher than a factory limiter like some of the jap cars (2jz etc) with no ill effects. They just crank the boost and up the rpm on a stock motor and away they go.

04-29-2016	#127
32valvesftw Join Date: Jun 2015 Location: Texas Posts: 530	Re: Poll: Who has ever hit the rev limiter? I agree with all in that hitting the rev limiter once or twice is not a big deal, but I think bouncing off the limiter as I see of the 4 cylinders do on launch make me cringe. Good think we have our friend Torque so we don't have do that.

10-02-2020	#130
Hib Halverson Join Date: Jun 2005 Location: CenCoast California Posts: 899	Re: Poll: Who has ever hit the rev limiter? When I owned Barney, I hit the rev limiter once in a while, mostly in first or second because I didn't properly anticipate the delay in the tach. What I wouldn't have given for an HUD back then. As I ran my car on the chassis dyno enough to know where the engine made power and what the best shift points were, I almost never would tag the limiter intentionally. The Street Skinner engine in Barney which used stock manifolds and cats made right at 500-hp but it peaked at 6500 or so and was "all done" by 6800 and that's where I usually shifted such that after the shift I ended up down around peak torque. With my current ZR1, Bad-Assed Bee, I'm always hitting the limiter in first and second if I'm manually shifting. Left in drive, the darn thing always shifts just before the limiter. Innovation and Technology rears its ugly head. __________________ Hib Halverson Technical Writer former owner 95 VIN 0140 current owner 19 VIN 1878