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 02-11-2008   #11
Arctic91
 
Arctic91's Avatar
 
Join Date: Nov 2007
Location: Sykesville, MD
Posts: 377
Default Re: WooHoo!!! What stumbling??

We've got it cold here, too. But we've also got it THIN. The air, that is.

Now that I'm more familiar with the car (was too afraid to drive it right during the test drive and xport back to the casa), I can't wait to get her back to sea level and see how she feels there. Gotta be a noticable difference.
__________________
WAZOO Member

'95 Callaway SNAT 450 Aerobody Coupe - Black/Black
'92 Callaway SNAT 400 Convertible - Polo Green/Beige
'91 ZR-1 #1231 - Arctic White/Saddle (SOLD)
'90 ZR-1 #2547 - Turquoise Metallic/Black
'89 Callaway Twin Turbo Aerobody Coupe #027 - Black/Black
'85 Corvette 454 Coupe - White/Red
Arctic91 is offline   Reply With Quote
Old 02-11-2008   #12
tomtom72
 
tomtom72's Avatar
 
Join Date: Dec 2004
Location: Jacksonville, FL USA
Posts: 4,645
Default Re: WooHoo!!! What stumbling??

Now you really look like this Paul---->



Great results!
__________________
1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member
tomtom72 is offline   Reply With Quote
Old 02-11-2008   #13
Paul Workman
 
Paul Workman's Avatar
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
Default Can we say, "forced induction"?

Quote:
Originally Posted by Arctic91
We've got it cold here, too. But we've also got it THIN. The air, that is.

Now that I'm more familiar with the car (was too afraid to drive it right during the test drive and xport back to the casa), I can't wait to get her back to sea level and see how she feels there. Gotta be a noticable difference.
Parker! No kidding! I lived in Franktown for about 7 months before moving to Bailey to live for about 3 years. Actually...living on "the flats", was noticably better than living at 8500', as far as air goes. I live at 600' AMSL now and when I drive from here to vist friends in CO, buy the time I get to Conifer I keep looking in my rear view mirror for the 26 foot camp trail I feel like I must have picked up somewhere along the way!.

So! I plan to return "home" to my beloved CO mtns. in a couple years. Between now and then, I'm reading everything I can about FI for the "Z". That rear-mounted TT setup we're reading about might hold some promise - at least knock those mtns down to size a little!?

Dang! Living in CO and drivin' a Z...I can't imagine it getting better than that!

P.
Paul Workman is offline   Reply With Quote
Old 02-11-2008   #14
phrogs
 
phrogs's Avatar
 
Join Date: Jul 2004
Location: Kalamazoo MI
Posts: 1,753
Default Re: WooHoo!!! What stumbling??

Quote:
Originally Posted by Paul Workman

As far as I know, it didn't miss a single beat on several 7k run-ups, and the acid test

P.
ok what acid test?
__________________
JOHNNY P

Currently own

90 ZR-1 #845 DRM 500 engine package

90 #226 Parts car Hit me up if you need anything.
phrogs is offline   Reply With Quote
Old 02-11-2008   #15
Paul Workman
 
Paul Workman's Avatar
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
Default Re: WooHoo!!! What stumbling??

Quote:
Originally Posted by phrogs
ok what acid test?
In my case...

>>>and the acid test; 6th gear at 55 mph and floor it (used to NEVER be able to get close to doing that without some pretty violent cut-outs and missing).<<<

Accelleration at low rpm would almost always result in missing and even some hard cut-outs. No more, I'm thrilled to say!!

P.
Paul Workman is offline   Reply With Quote
Old 02-11-2008   #16
Arctic91
 
Arctic91's Avatar
 
Join Date: Nov 2007
Location: Sykesville, MD
Posts: 377
Default Re: WooHoo!!! What stumbling??

Paul,

Franktown, huh? I've got a pair of friends who live down there and work with me up at Buckley. Commute kinda sucks (I suck it up and pay the toll on E470), but nothing like the traffic I endured whe I was in DC. The folks there deserve a medal for putting up with that...

This area is by far the nicest place we've lived. We're going to keep the house and maybe return once I retire. I totally understand why you want to come back!!
__________________
WAZOO Member

'95 Callaway SNAT 450 Aerobody Coupe - Black/Black
'92 Callaway SNAT 400 Convertible - Polo Green/Beige
'91 ZR-1 #1231 - Arctic White/Saddle (SOLD)
'90 ZR-1 #2547 - Turquoise Metallic/Black
'89 Callaway Twin Turbo Aerobody Coupe #027 - Black/Black
'85 Corvette 454 Coupe - White/Red
Arctic91 is offline   Reply With Quote
Old 02-12-2008   #17
rogerzr1
 
rogerzr1's Avatar
 
Join Date: Sep 2007
Location: Georgia
Posts: 231
Default Re: WooHoo!!! What stumbling??

Quote:
Originally Posted by Paul Workman
In my case...

>>>and the acid test; 6th gear at 55 mph and floor it (used to NEVER be able to get close to doing that without some pretty violent cut-outs and missing).<<<

Accelleration at low rpm would almost always result in missing and even some hard cut-outs. No more, I'm thrilled to say!!

P.
Paul, I am dealing with simular performance problems. I have one thing I am going to check before doing what you did.

Glad to see you got it worked out!!!

Hope I will be in the same boat soon!
__________________
Roger Miller
91 ZR-1 #391
rogerzr1 is offline   Reply With Quote
Old 02-12-2008   #18
Paul Workman
 
Paul Workman's Avatar
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
Default Forgot to mention an observation...

Quote:
Originally Posted by rogerzr1
Paul, I am dealing with simular performance problems. I have one thing I am going to check before doing what you did.

Glad to see you got it worked out!!!

Hope I will be in the same boat soon!
Thinking back on my symptoms, it seemed to be the worst until it had run for at least 20-30 minutes - getting better as it ran longer. That fact was causing me to think "air leak" or some such thing. Maybe that too was a contributor (the IH bolts were loose!).

But, then I got to thinking about it some more, and I realized that several times there was condensation on the motor (I know, I know...) and I'm thinking the wires under the plenum could have been wet too. After it would warm up and air circulated about, I suppose the wires would dry out and it would run better. I dunno. I'm just tickled that it is running good now, and hope that continues for a while!

In the process of fixing this one item, I spent many hours studying the FSM. So, if nothing else, I got a good bit of "book learnin" on the LT5. I'm not ready to time the cams or anything like that, but at least I know about the cam timing adjusments have a procedure to do it! It's been a good learning experience (but I ain't at the top of the curve just yet!)

Good luck w/ your quest.

P.
Paul Workman is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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 11:49 PM.


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