C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Cooling issue

Old Aug 17, 2002 | 12:37 AM
  #1  
2 N.O. Vettes's Avatar
2 N.O. Vettes
Thread Starter
Advanced
20 Year Member
All Eyes On Me
Liked
 
Joined: Sep 2001
Posts: 62
Likes: 1
From: New Orleans Louisiana
Default Cooling issue

I'm posting this for my co-worker. He has a '78 and as long as he stays under 50 mph the engine temperature is 150, over 50 mph the engine starts to over heat. I also this happen to a '72 on the Stars and Strips tour. 72' would start to over heat at speeds over 60 mph. Any ideas :confused:
Reply
Old Aug 17, 2002 | 12:45 AM
  #2  
Ben Taylor's Avatar
Ben Taylor
Pro
20 Year Member
 
Joined: Dec 2000
Posts: 560
Likes: 0
From: Camino CA
Default Re: Cooling issue (2 N.O. Vettes)

There are pieces of foam that block the area around the radiator so that all the air will flow through only the radiator, if these are missing a lot of the air goes around the radiator instead of through it at higher speeds.
Reply
Old Aug 17, 2002 | 12:49 AM
  #3  
2 N.O. Vettes's Avatar
2 N.O. Vettes
Thread Starter
Advanced
20 Year Member
All Eyes On Me
Liked
 
Joined: Sep 2001
Posts: 62
Likes: 1
From: New Orleans Louisiana
Default Re: Cooling issue (Ben Taylor)

Thanks, I didn't think of that! I'll ask Vernon to check that first thing Monday :cheers:
Reply
Old Aug 17, 2002 | 04:42 AM
  #4  
AlwaysWave's Avatar
AlwaysWave
Le Mans Master
10 Year Member
 
Joined: Feb 1999
Posts: 6,807
Likes: 0
From: Hoosier
Cruise-In III Veteran
Default Re: Cooling issue (2 N.O. Vettes)

Waz you thinking of me :jester at 95 degrees or more ambient and 3000 rpm she would get hot :eek: I replaced the lower radiator hose because the spring and hose both felt soft. That old hose must have been collapsing restricting some flow.


[Modified by AlwaysWave, 2:42 AM 8/17/2002]
Reply
Old Aug 17, 2002 | 02:02 PM
  #5  
2 N.O. Vettes's Avatar
2 N.O. Vettes
Thread Starter
Advanced
20 Year Member
All Eyes On Me
Liked
 
Joined: Sep 2001
Posts: 62
Likes: 1
From: New Orleans Louisiana
Default Re: Cooling issue (AlwaysWave)

Waz Uppp! when Vernon said he was having heating issues I did think of you. Was the lower raditor hose the only thing you changed? Do you have the foam stripping around the hood and raditor? Pam and I will be in BG for the flag presentation. Great job on the S & S Tour it is a trip we'll never forget. We'll see ya in BG! (We'll be in Pam's '73) us C3 guys got to stick together. :flag
Reply
Old Aug 20, 2002 | 10:29 PM
  #6  
2 N.O. Vettes's Avatar
2 N.O. Vettes
Thread Starter
Advanced
20 Year Member
All Eyes On Me
Liked
 
Joined: Sep 2001
Posts: 62
Likes: 1
From: New Orleans Louisiana
Default Re: Cooling issue (2 N.O. Vettes)

Thanks for all the responses. I spoke with vernon and he said that he had replaced all the foam pices around the rad. Changed the upper and lower hoses, had the rad cleaned and changed the thermostat. He is not losing or leaking water. Any other ideas whats going on? :confused:
Reply
Old Aug 21, 2002 | 12:20 AM
  #7  
LAvetteman's Avatar
LAvetteman
Safety Car
20 Year Member
 
Joined: Jan 2001
Posts: 4,660
Likes: 3
From: South Central Louisiana
St. Jude Contributor
Default Re: Cooling issue (2 N.O. Vettes)

I would imagine the fan clutch could always be a possibilty.
Reply
Old Aug 21, 2002 | 05:47 AM
  #8  
AlwaysWave's Avatar
AlwaysWave
Le Mans Master
10 Year Member
 
Joined: Feb 1999
Posts: 6,807
Likes: 0
From: Hoosier
Cruise-In III Veteran
Default Re: Cooling issue (2 N.O. Vettes)

Is the chin spoiler on? After all that replacement there should be some inprovements. :confused: Any crud stuff lodged in the fins of the rad?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-1

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-2

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-3

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-4

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-5

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-6

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-7

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-8

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-9

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
Old Aug 21, 2002 | 11:14 AM
  #9  
PyjamaSam's Avatar
PyjamaSam
Pro
 
Joined: Jan 2002
Posts: 734
Likes: 0
From: At the end of 2 big long black marks on #2 Sideroad and Walkers Line.
Default Re: Cooling issue (2 N.O. Vettes)

I have the same issue in my 78. I replaced my rad and water pump, which helped a bit. But I found out my fan clutch is gone, and I am missing the little chin spoiler...

chris.
Reply

Get notified of new replies

To Cooling issue



Thread Tools
Search this Thread

All times are GMT -4. The time now is 02:08 PM.

story-0
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-1
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-2
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-3
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-4
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-5
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-6
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-7
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-8
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-9
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE