ZR-1 Net Registry Forums  

Go Back   ZR-1 Net Registry Forums > C4 ZR-1 > C4 ZR-1 Technical Postings

Reply
 
Thread Tools Display Modes
Old 02-13-2017   #1
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,707
Default LT5 Idle w Pete's cams

Playing in the garage since temps are near 40 (Awesome weather for ORD)
Had motor idling just to warm things up and test new alternator so I thought I'd document this. Motor running well.
BTW, both Intake and Exhaust.

__________________
[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

Last edited by XfireZ51; 02-13-2017 at 01:21 PM.
XfireZ51 is offline   Reply With Quote
Old 02-13-2017   #2
Roadster
 
Roadster's Avatar
 
Join Date: Mar 2014
Location: Warrington PA
Posts: 1,914
Default Re: LT5 Idle w Pete's cams

Your engine sounds real good, very smooth.....
btw, is that a crack in your gauge cover?

Scratch.
__________________
Tom

1994 ZR-1 #009 "captured test fleet car"
1974 LS4 454 Vert
1974 L-82 355 Vert.
1982 L83 CFI...now a retired "dd"....Sold

WAZOO Member

Last edited by Roadster; 02-13-2017 at 08:27 PM.
Roadster is offline   Reply With Quote
Old 02-13-2017   #3
efnfast
 
Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,478
Default Re: LT5 Idle w Pete's cams

Boy, I hope my car idles that nice. Altough, I do like that cam lope.
efnfast is offline   Reply With Quote
Old 02-13-2017   #4
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,707
Default Re: LT5 Idle w Pete's cams

Quote:
Originally Posted by efnfast View Post
Boy, I hope my car idles that nice. Altough, I do like that cam lope.
This is in Closed Loop.
__________________
[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
XfireZ51 is offline   Reply With Quote
Old 02-13-2017   #5
efnfast
 
Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,478
Default Re: LT5 Idle w Pete's cams

How does that change things Dom?
efnfast is offline   Reply With Quote
Old 02-13-2017   #6
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,707
Default Re: LT5 Idle w Pete's cams

Quote:
Originally Posted by efnfast View Post
How does that change things Dom?
Most tuners, of the ones I know of, tune "cams" in Open Loop. Closed Loop allows modification of fueling based on O2 input and allow me to manipulate
parameters that are not enabled in Open Loop. In my experince, tuning in Closed Loop gives me more control over how engine will operate in a variety of situations resulting in more consistent operation.
It takes more time but it works for me.
__________________
[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

Last edited by XfireZ51; 02-13-2017 at 10:37 PM.
XfireZ51 is offline   Reply With Quote
Old 02-13-2017   #7
jss06c6
 
Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
Default Re: LT5 Idle w Pete's cams

Very nice Dominic! Is that where you are going to mount the wideband display. Love the digital and the exhaust temp!

Steve

Sent from my XT1585 using ZR-1 Net Registry mobile app
jss06c6 is offline   Reply With Quote
Old 02-13-2017   #8
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,707
Default Re: LT5 Idle w Pete's cams

Quote:
Originally Posted by jss06c6 View Post
Very nice Dominic! Is that where you are going to mount the wideband display. Love the digital and the exhaust temp!

Steve

Sent from my XT1585 using ZR-1 Net Registry mobile app
Steve,

I have the console apart for installation of an appRadio4. The display comes w the Zeitronix ZT-2 WB that I have used for about 10years. The display has
AFR, MAP v, and Lambda. The EGT isn't working although it can be plumbed into the WB datastream. I use a 14.3 AFR for stoich since we have 10% Ethanol here in the Midwest, so I really look at Lambda for tuning purposes.
__________________
[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
XfireZ51 is offline   Reply With Quote
Old 02-13-2017   #9
jss06c6
 
Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
Default Re: LT5 Idle w Pete's cams

Quote:
Originally Posted by XfireZ51 View Post
Steve,

I have the console apart for installation of an appRadio4. The display comes w the Zeitronix ZT-2 WB that I have used for about 10years. The display has
AFR, MAP v, and Lambda. The EGT isn't working although it can be plumbed into the WB datastream. I use a 14.3 AFR for stoich since we have 10% Ethanol here in the Midwest, so I really look at Lambda for tuning purposes.
Nice! Need to chat about 10% ethanol Stoich and tuning impact.. I calculated 14.11 here in Houston. Topic for another time.. I'll drop you a note regarding my WOT runs yesterday...

Steve
jss06c6 is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:37 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2020