C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Overheating??

Thread Tools
 
Search this Thread
 
Old Aug 3, 2022 | 08:26 PM
  #1  
ArmyVetteC5's Avatar
ArmyVetteC5
Thread Starter
5th Gear
 
Joined: Jun 2022
Posts: 5
Likes: 0
From: Tennessee
Default Overheating??

Has anyone installed the carbon fiber, Corvette creations C5R front splitter and experienced engine overheating? It happens at higher speeds. Any resolutions or input is very much appreciated. I'm reaching temps of 250-260..I know the splitter is taking air from going under the car. Thanks everyone



1999 LS1
ECS Paxton supercharger
Kooks long tube headers and exhaust
LS7 cam, hand ported heads and intake
Reply
Old Aug 3, 2022 | 09:05 PM
  #2  
mmartinez's Avatar
mmartinez
Melting Slicks
15 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Sep 2008
Posts: 3,127
Likes: 799
From: Espanola New Mexico
Default

Resolution is to remove splitter or somehow modify it to allow air up into the radiator.
Reply
Old Aug 3, 2022 | 09:12 PM
  #3  
billschroeder5842's Avatar
billschroeder5842
Zen Vet Master Level VII
Supporting Gold
Veteran: Navy
10 Year Member
Liked
Loved
 
Joined: Mar 2016
Posts: 5,214
Likes: 1,173
From: Southlake, TX
Default

Originally Posted by ArmyVetteC5
I'm reaching temps of 250-260..I
YIKES!!

Yes, remove the splitter and see if the devise is causing the high temps . Also, when was the last time you cleaned in between the condenser and radiator? That area fills up super quick with road debris and will obstruct air flow. My gut says you have more going on than a splitter problem.

BTW... my 04 runs at 198 degrees at 75mph in 106 Texas heat for comparison purposes only.
Reply
Old Aug 4, 2022 | 09:53 AM
  #4  
ArmyVetteC5's Avatar
ArmyVetteC5
Thread Starter
5th Gear
 
Joined: Jun 2022
Posts: 5
Likes: 0
From: Tennessee
Default

Thanks Bill. Marc at Vettenuts vacuumed and blew out debris from the radiator and condenser a few months ago. I was running 220 degrees during the 100+ degree plus days before installing the C5R which is normal with my engine mods but as soon as I installed the splitter the temp rises to 230-257 degrees on the interstate. I can tuck up behind another vehicle and it will cool back down. The more clean air at higher speed raises the temp. Highway speed at 55-60 and it stays around 220. The splitter seems to be catching all of the air for downforce and not allowing air under the car. The fans are both working and it hasn't got hot enough to lose coolant or trigger a dash light but I don't like the engine running that hot. Thanks again.
Reply
Old Aug 4, 2022 | 10:18 AM
  #5  
mmartinez's Avatar
mmartinez
Melting Slicks
15 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Sep 2008
Posts: 3,127
Likes: 799
From: Espanola New Mexico
Default

I can guarantee that your cars higher highway temperatures are being caused by that splitter. Many forum members have posted on this, they look good but reduce the amount of air going up into the radiator at highway speeds, the fans of course are turned off at speeds above 35mph.
Reply
Old Aug 4, 2022 | 10:30 AM
  #6  
ArmyVetteC5's Avatar
ArmyVetteC5
Thread Starter
5th Gear
 
Joined: Jun 2022
Posts: 5
Likes: 0
From: Tennessee
Default

Now that makes more sense. I didn't know that the fans cut off over 35mph. Thank you for that information.
-Tony
Reply
Old Aug 4, 2022 | 12:11 PM
  #7  
grinder11's Avatar
grinder11
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Oct 2004
Posts: 12,859
Likes: 4,658
Default

Originally Posted by ArmyVetteC5
Now that makes more sense. I didn't know that the fans cut off over 35mph. Thank you for that information.
-Tony
You can have the fans tuned to activate at different temps. Mine are set to come on hi speed at 192°, off at 184°. I have a built LS7, so it has different cooling needs than stock......
Reply
Old Aug 4, 2022 | 12:32 PM
  #8  
ArmyVetteC5's Avatar
ArmyVetteC5
Thread Starter
5th Gear
 
Joined: Jun 2022
Posts: 5
Likes: 0
From: Tennessee
Default

Thank you. I'll get Marc to adjust the fan on/off temps. I also noticed significant damage to the radiator/intercooler center air deflector and I have to change that out as well.. Thanks again.
-Tony
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Joe Kucinski
story-1

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

 Verdad Gallardo
story-2

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

 Joe Kucinski
story-3

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

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
Old Aug 4, 2022 | 04:27 PM
  #9  
mmartinez's Avatar
mmartinez
Melting Slicks
15 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Sep 2008
Posts: 3,127
Likes: 799
From: Espanola New Mexico
Default

I bought a small sheet of that ABS plastic, and had them cut several pieces to the corrrct size, unfortunately I am currently on the last one, being very careful not to damage this one.
Reply
Old Aug 4, 2022 | 04:39 PM
  #10  
ArmyVetteC5's Avatar
ArmyVetteC5
Thread Starter
5th Gear
 
Joined: Jun 2022
Posts: 5
Likes: 0
From: Tennessee
Default

I have to do the same thing. With the supercharger and intercooler the center air dam has to be modified. I hope it helps my problem with the splitter.
Reply

Get notified of new replies

To Overheating??





All times are GMT -4. The time now is 05:54 AM.

story-0
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-1
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-2
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-3
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-4
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
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE