Poll: Who has ever hit the rev limiter? - Page 15 - ZR-1 Net Registry Forums

Mikey · 11-05-2020

Haven't hit it nor do I know what it is set at.

Only purchased the car a few weeks ago. 368ci Corey Henderson built 1991 Z. 4.10 gears. I did 3 pulls in second gear and the tach needle swept just above 8000 each time at which point I decided I better shift. Don't know if it is accurate but sure sounds like it's well north of 7000 anyway.

EvanZR1 · 11-05-2020

Technically not stroked. It's one of Pete's 391 cubic inch closed deck blocks (larger bores) with stock crank. Add to that Pete's port work of everything and his aggressive stage 2 cams (plus of course long tubes, no cats and Corsa exhaust). Makes peak power at 6500rpm and holds it all the way to redline. Build thread here.

EvanZR1 · 11-05-2020

Quote:

Originally Posted by Mikey

Haven't hit it nor do I know what it is set at.

Only purchased the car a few weeks ago. 368ci Corey Henderson built 1991 Z. 4.10 gears. I did 3 pulls in second gear and the tach needle swept just above 8000 each time at which point I decided I better shift. Don't know if it is accurate but sure sounds like it's well north of 7000 anyway.

You need to get your gauge cluster redone by Batee. When I bought mine, it was the same way. I could bury the tach past 8K and never hit the rev limiter. I used gps speed (Google Maps or Waze) on my phone to compare to tach one day and calculated it was at least 2K off. Having the shift light makes it even easier though as I can keep my eyes on the road and not have to watch the tach.

Mikey · 11-05-2020

Quote:

Originally Posted by EvanZR1

You need to get your gauge cluster redone by Batee. When I bought mine, it was the same way. I could bury the tach past 8K and never hit the rev limiter. I used gps speed (Google Maps or Waze) on my phone to compare to tach one day and calculated it was at least 2K off. Having the shift light makes it even easier though as I can keep my eyes on the road and not have to watch the tach.

Thanks for the tip. Will verify rpm vs speed first. Also,planning to install a shift light.

Was your tach off a consistent percentage throughout the range or was it only skewed at the top?

EvanZR1 · 11-05-2020

Quote:

Originally Posted by Mikey

Was your tach off a consistent percentage throughout the range or was it only skewed at the top?

It's been several years, but I think it was skewed more at the top end (pretty sure I would have remembered it being off by 1K or more at idle).

Paul Workman · 11-06-2020

Quote:

Originally Posted by Mikey

Haven't hit it nor do I know what it is set at.

Only purchased the car a few weeks ago. 368ci Corey Henderson built 1991 Z. 4.10 gears. I did 3 pulls in second gear and the tach needle swept just above 8000 each time at which point I decided I better shift. Don't know if it is accurate but sure sounds like it's well north of 7000 anyway.

Welcome to the BROTHERHOOD OF THE BEAST!

Here is a chart you might use to see if your tach is tracking correctly...assuming your speedo is corrected for the 410 gear!

And...(IIRC) there is a way to determine the RPM from the DIC (digital information center - the display in the dash). As I seem to recall, (someone please chime in here!) a number can be retrieved and a multiplier is used to ascertain the actual RPM. OR, if you have a scanner, of course you can read and compare the analog tach to the digital reading.

P.

Mikey · 11-14-2020

I checked the tach gauge vs the readout on the HVAC control. Hold up and down fan speed buttons simultaneously until 00 appears then tap up until 06. Tap the fan button. This gives you rpm/25. It won't read all the way to 7000 but I was able to verify my tach gauge reads about 15% high throughout the entire range. So 8000 is really only about 7000. Will have to get it calibrated.

MuRCieLaGo · 11-14-2020

I don't feel like reading the whole thread, but I'm wondering... I feel like I drive the car really hard... But I don't recall hitting the rev limiter! What happens when you hit it, RPM decreases a little bit by itself, then increases back up?

My 1993 had a steady rev limiter, RPM doesn't decrease when I hit it...

Paul Workman · 11-15-2020

Quote:

Originally Posted by Mikey

I checked the tach gauge vs the readout on the HVAC control. Hold up and down fan speed buttons simultaneously until 00 appears then tap up until 06. Tap the fan button. This gives you rpm/25. It won't read all the way to 7000 but I was able to verify my tach gauge reads about 15% high throughout the entire range. So 8000 is really only about 7000. Will have to get it calibrated.

BATEE can either do the work for you, OR they can sell you the resistor circuit board replacing the old one, OR you can build you own precision voltage divider and install it yourself. (Personally, I built my own voltage divider, but that was before BATEE was known to me, and the fact they now sell the "chip" for DIY'ers like me!)

Bob Eyres · 11-17-2020

The power doesnt drop off in a stock LT5 before redline.
Unless you go past the power peak, you will be way below it after your shift.

Sent from my iPhone using ZR-1 Net Registry

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

11-05-2020	#141
Mikey Join Date: Jul 2020 Location: Nashville TN Posts: 301	Re: Poll: Who has ever hit the rev limiter? Haven't hit it nor do I know what it is set at. Only purchased the car a few weeks ago. 368ci Corey Henderson built 1991 Z. 4.10 gears. I did 3 pulls in second gear and the tach needle swept just above 8000 each time at which point I decided I better shift. Don't know if it is accurate but sure sounds like it's well north of 7000 anyway.

11-05-2020	#142
EvanZR1 Join Date: Nov 2010 Location: Omaha Posts: 402	Re: Poll: Who has ever hit the rev limiter? Technically not stroked. It's one of Pete's 391 cubic inch closed deck blocks (larger bores) with stock crank. Add to that Pete's port work of everything and his aggressive stage 2 cams (plus of course long tubes, no cats and Corsa exhaust). Makes peak power at 6500rpm and holds it all the way to redline. Build thread here. __________________ Evan 2023 70th C8 HTC, 94 Admiral Blue ZR-1 SOLD - 2012 Carlisle Blue Metallic ZR1 - 800HP SOLD - Steel Blue 91 391cid ZR-1 #391 SOLD - Black 91 ZR-1

11-14-2020	#147
Mikey Join Date: Jul 2020 Location: Nashville TN Posts: 301	Re: Poll: Who has ever hit the rev limiter? I checked the tach gauge vs the readout on the HVAC control. Hold up and down fan speed buttons simultaneously until 00 appears then tap up until 06. Tap the fan button. This gives you rpm/25. It won't read all the way to 7000 but I was able to verify my tach gauge reads about 15% high throughout the entire range. So 8000 is really only about 7000. Will have to get it calibrated.

11-14-2020	#148
MuRCieLaGo Join Date: Aug 2014 Location: Trois-Rivieres (QC) Posts: 473	Re: Poll: Who has ever hit the rev limiter? I don't feel like reading the whole thread, but I'm wondering... I feel like I drive the car really hard... But I don't recall hitting the rev limiter! What happens when you hit it, RPM decreases a little bit by itself, then increases back up? My 1993 had a steady rev limiter, RPM doesn't decrease when I hit it... __________________ Mazda RX-7 1992 Chevrolet Corvette ZR-1 1991 Dodge Viper RT/10 1994 Mercedes-Benz C63 AMG 2009

11-17-2020	#150
Bob Eyres Join Date: Jul 2005 Location: Jupiter, Fl. Posts: 815	Re: Poll: Who has ever hit the rev limiter? The power doesnt drop off in a stock LT5 before redline. Unless you go past the power peak, you will be way below it after your shift. Sent from my iPhone using ZR-1 Net Registry __________________ "It's about the car, not the people." 1991 ZR-1 White/Black #1236 (Owner since 1994). Stock engine with bolt-ons: Hurst shifter,"Forced Air" intake, Coplon duct, Bee Cool Radiator, Demon coils, Jeal prom, Watson headers, X pipe, 3" B&B's, Rippie flywheel, 4:10 gears, A molds, Toyo Proxes-R888's 12.06@117mph. 1.76 60ft.