Few issues with my Z - ZR-1 Net Registry Forums

BigIke · 08-31-2014

Idle - It idles between 1.3k and 3k... Hunts pretty bad. I've replaced the IAC after finding the threads stripped, cleaned it all up in the TB also, no change. I've sprayed Carb cleaner around the vacuum hoses, no increase in Idle.

Tach - Is it possible for the LT5 to go 8k RPM? Damn thing feels like it's pulling hard still. Anyone have tach error issues?

The other issues are the service FX3 and a bad TPS... I'll check the codes for the FX3 and replace the bad TPS.

Kevin · 08-31-2014

it's possible for the lt5 to go to 8k but you're going to need to have the rev limiter removed.

BigIke · 08-31-2014

Going to have to install a temporary tach to make sure. I don't want to spin over 7. But it does seem to be pulling still

Hog · 08-31-2014

IIRC the stock rev limiter is set of 7200rpm. If its still pulling then you havent hit it then. If GM thought that engine damage would result, they would have set the limiter lower than 7200rpm.

BigIke · 08-31-2014

Ok... 7K RPM in 1st gear with stock gearing what should the RPM be?

Dynomite · 08-31-2014

Quote:

Originally Posted by BigIke

Ok... 7K RPM in 1st gear with stock gearing what should the RPM be?

I think you are asking mph in first gear.
First gear - 2.68
Differential - 3.45
Tires - 315x17x35

57.82 mph at 7,000 engine rpm in first gear depending a bit on tire loaded radius (315x17x35 tires).

Tech Info - ZR1 Differential Gearing and Vehicle Speed Calculations

BigIke · 08-31-2014

Awesome... Guess I'll have to drive the car first thing tomorrow... Darn...

My wife is already getting sick of me taking one of our 2 girls in the Vette and her having to take the Diesel or Magnum... LOL

I wish I'd known how cool it was to own and drive a vette... I would have picked up the 89 DRM 383 for 8k 5 years ago!

Better than any of my SRT10's, the SRT8... 9 second stang... anything! I'm thinking about selling the LS Juan Camaro and buying a LT1 Vette as my Oilfield car...

The car since 02 has had 8k miles put on it, in 4 days I've managed 600 miles!

LOVE!

Pete · 09-01-2014

Most stock techs are off.
If you have stock chip/program in it, then just keep your foot in it till you hit rev limiter which is set at 7170.

Pete

BigIke · 09-01-2014

Lol, I have no idea what's in this car... To me it is quick, but not as quick as the magnum.. I think I is stock with Borla exhaust. I will be with removing the resonator and adding an x pipe... I think

XfireZ51 · 09-01-2014

Sorry but doesn't your ZR have the wrong rear end cap on it?

08-31-2014	#1
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	Few issues with my Z Idle - It idles between 1.3k and 3k... Hunts pretty bad. I've replaced the IAC after finding the threads stripped, cleaned it all up in the TB also, no change. I've sprayed Carb cleaner around the vacuum hoses, no increase in Idle. Tach - Is it possible for the LT5 to go 8k RPM? Damn thing feels like it's pulling hard still. Anyone have tach error issues? The other issues are the service FX3 and a bad TPS... I'll check the codes for the FX3 and replace the bad TPS. __________________ 1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car!

08-31-2014	#2
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: Few issues with my Z it's possible for the lt5 to go to 8k but you're going to need to have the rev limiter removed. __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

08-31-2014	#3
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	Re: Few issues with my Z Going to have to install a temporary tach to make sure. I don't want to spin over 7. But it does seem to be pulling still __________________ 1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car!

08-31-2014	#4
Hog Join Date: Jul 2010 Location: Woodstock, Ontario, Canada Posts: 1,275	Re: Few issues with my Z IIRC the stock rev limiter is set of 7200rpm. If its still pulling then you havent hit it then. If GM thought that engine damage would result, they would have set the limiter lower than 7200rpm. __________________ peace Paul ZR-1 Net Registry Member #1494

08-31-2014	#5
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	Re: Few issues with my Z Ok... 7K RPM in 1st gear with stock gearing what should the RPM be? __________________ 1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car!

08-31-2014	#7
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	Re: Few issues with my Z Awesome... Guess I'll have to drive the car first thing tomorrow... Darn... My wife is already getting sick of me taking one of our 2 girls in the Vette and her having to take the Diesel or Magnum... LOL I wish I'd known how cool it was to own and drive a vette... I would have picked up the 89 DRM 383 for 8k 5 years ago! Better than any of my SRT10's, the SRT8... 9 second stang... anything! I'm thinking about selling the LS Juan Camaro and buying a LT1 Vette as my Oilfield car... The car since 02 has had 8k miles put on it, in 4 days I've managed 600 miles! LOVE! __________________ 1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car!

09-01-2014	#8
Pete Join Date: Dec 2003 Location: Chicagoland,IL Posts: 2,679	Re: Few issues with my Z Most stock techs are off. If you have stock chip/program in it, then just keep your foot in it till you hit rev limiter which is set at 7170. Pete __________________ '91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage

09-01-2014	#9
BigIke Join Date: Aug 2014 Location: Montgomery TX Posts: 263	Re: Few issues with my Z Lol, I have no idea what's in this car... To me it is quick, but not as quick as the magnum.. I think I is stock with Borla exhaust. I will be with removing the resonator and adding an x pipe... I think __________________ 1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car!

09-01-2014	#10
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,699	Re: Few issues with my Z Sorry but doesn't your ZR have the wrong rear end cap on it? __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX