Introduction and Overheating (long) - Page 5 - ZR-1 Net Registry Forums

ChattanoogaJSB · 08-21-2018

Quote:

Originally Posted by rkreigh

the orange dexcool stuff is bad news for the lt5 head gaskets and I would get rid of it

run the green stuff, you'll be glad you did.

Yes, we have fresh green in it and now believe it has had green in previously

rkreigh · 08-21-2018

fyi,

I was shocked, after about 4 years and 30k miles a brand new radiator was about 40% packed with crud.

the bigger ron davis seemed to clean up easier than the stocker, but I was surprised just how dirty it was after that amount of miles from normal highway use.

ChattanoogaJSB · 08-22-2018

Quote:

Originally Posted by rkreigh

fyi,

I was shocked, after about 4 years and 30k miles a brand new radiator was about 40% packed with crud.

the bigger ron davis seemed to clean up easier than the stocker, but I was surprised just how dirty it was after that amount of miles from normal highway use.

It’s definitely on my mind that it could be restricted. Certainly would explain heating up under load on only.

Weather has improved and I’m going to test drive it today using the lcd temp readout and will report back. The chip is a no brainer whether I need to put a radiator in now or not.

Thank you for the reply!

WARP TEN · 08-22-2018

My '93 was getting a bit hot at about 40,000 miles. I had my mechanic remove the radiator and it turned out to be about 40% plugged with debris. He hosed it out and replaced it; I added a 1/4 inch hardware cloth mesh screen to the air opening underneath and never had a problem again. Also had Marc add a screen to the '95 just in case. Never had to install an aftermarket radiator. This is simply a problem with the bottom feeders.--Bob

ssrszz4 · 08-23-2018

The stock radiator is junk if you ever take it out replace it with a better radiator money well spent.

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

ChattanoogaJSB · 08-23-2018

A couple more folks have responded and I didn’t want to be too long between visits here because I appreciate the feedback. I’ll reply tonight with the notes from my voice memo I made yesterday testing the system after the burp.

The short- short version isthe car drove beautifully and thanks to everyone’s help here could be said to cool “as designed.”

The data might be handy for someone later on so I’ll post.

Owner will do the Haibeck chip now and the radiator as a good precaution in a month or so as we have time between my projects and his two.

Probably Dewitts. No one on the c1/c2 forum has anything but high praise for them.

Benton

ChattanoogaJSB · 08-23-2018

Here are my note of temperature based on where I am on the drive and some notes on condition. Pardon my handwriting.

I feel with everyone’s help I have a much better understanding of the cooling system and it’s next upgrades- my thanks again and for the warm welcome.

I started on one mountain, ran down, down the valley road and back up the other. The climbs are only about 1,000’ so not huge but significant

Ccmano · 08-23-2018

Very nice documentation. I see no issues here whatsoever. I see your ambient temp was 82’, keep in mind as ambient temps rise so will your engine temp. Enjoy your Z. When the Haibeck chip is in you will enjoy it even more.
H

ChattanoogaJSB · 08-23-2018

Quote:

Originally Posted by Ccmano

Very nice documentation. I see no issues here whatsoever. I see your ambient temp was 82’, keep in mind as ambient temps rise so will your engine temp. Enjoy your Z. When the Haibeck chip is in you will enjoy it even more.
H

Absolutely. We routinely see 15 degrees hotter weather for a period in summer.

Haibeck will be welcome.

Guess I need to find my own Z now...but where to put it?

08-21-2018	#42
rkreigh Join Date: Jan 2004 Location: Alex VA Posts: 1,087	Re: Introduction and Overheating (long) fyi, I was shocked, after about 4 years and 30k miles a brand new radiator was about 40% packed with crud. the bigger ron davis seemed to clean up easier than the stocker, but I was surprised just how dirty it was after that amount of miles from normal highway use. __________________ 95 390 LPE ZR1 (505 rwhp) LSV = Lingenfelter Super Vette Twin Turbo 2003 Z06 (800 RWHP)

08-22-2018	#44
WARP TEN Join Date: Apr 2007 Location: Lake Bluff, IL Posts: 2,096	Re: Introduction and Overheating (long) My '93 was getting a bit hot at about 40,000 miles. I had my mechanic remove the radiator and it turned out to be about 40% plugged with debris. He hosed it out and replaced it; I added a 1/4 inch hardware cloth mesh screen to the air opening underneath and never had a problem again. Also had Marc add a screen to the '95 just in case. Never had to install an aftermarket radiator. This is simply a problem with the bottom feeders.--Bob __________________ 2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough"

08-23-2018	#45
ssrszz4 Join Date: Jan 2017 Location: US Posts: 233	Re: Introduction and Overheating (long) The stock radiator is junk if you ever take it out replace it with a better radiator money well spent. Sent from my XT1585 using ZR-1 Net Registry mobile app

08-23-2018	#46
ChattanoogaJSB Join Date: Aug 2018 Location: Chattanooga, TN Posts: 25	Re: Introduction and Overheating (long) A couple more folks have responded and I didn’t want to be too long between visits here because I appreciate the feedback. I’ll reply tonight with the notes from my voice memo I made yesterday testing the system after the burp. The short- short version isthe car drove beautifully and thanks to everyone’s help here could be said to cool “as designed.” The data might be handy for someone later on so I’ll post. Owner will do the Haibeck chip now and the radiator as a good precaution in a month or so as we have time between my projects and his two. Probably Dewitts. No one on the c1/c2 forum has anything but high praise for them. Benton

08-23-2018	#47
ChattanoogaJSB Join Date: Aug 2018 Location: Chattanooga, TN Posts: 25	Re: Introduction and Overheating (long) Here are my note of temperature based on where I am on the drive and some notes on condition. Pardon my handwriting. I feel with everyone’s help I have a much better understanding of the cooling system and it’s next upgrades- my thanks again and for the warm welcome. I started on one mountain, ran down, down the valley road and back up the other. The climbs are only about 1,000’ so not huge but significant

08-23-2018	#48
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Introduction and Overheating (long) Very nice documentation. I see no issues here whatsoever. I see your ambient temp was 82’, keep in mind as ambient temps rise so will your engine temp. Enjoy your Z. When the Haibeck chip is in you will enjoy it even more. H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. Last edited by Ccmano; 08-23-2018 at 10:37 PM.