Also, it's possible you introduced some air into the system. Doesn't take much to raise the coolant temp if the system isn't properly "burped".
Change in coolant operating temp.
Thread Starter
Drifting
Joined: May 2003
Posts: 1,755
Likes: 97
From: Sandy Utah
Change in coolant operating temp.
I changed the coolant last fall and noticed that the operating temp is higher now than it was before I changed it. I have run the engine up to where the temp stabilized several times and then let the engine cool to where I could remove the tank cap and did not notice any air escaping from the tank. Before I changed the coolant, the op temp was 190-192. Now it is 196-198. Could I have done something wrong??
Race Director
Joined: Aug 1999
Posts: 11,117
Likes: 671
From: SE Pennsylvania
St. Jude Donor '03 thru '26
Oldtimer
Thread Starter
Drifting
Joined: May 2003
Posts: 1,755
Likes: 97
From: Sandy Utah
I have cleaned the radiator exterior and the coolant that I put in as a replacement was a 50/50 mix. If the mix was more coolant and less water, would that make the engine run hotter or cooler?
Thanx to all for your responses.
Racer
Joined: Nov 2006
Posts: 386
Likes: 0
From: El Paso Texas
Patches, I searched the forum and found a "Burp" procedure. It says "run the engine between idle and 3000 rpm until the temp reaches 210. Remove the coolant cap" I am sure that removing the cap with the temp at 210 will blow coolant all over the place. Am I reading this correctly.
I have cleaned the radiator exterior and the coolant that I put in as a replacement was a 50/50 mix. If the mix was more coolant and less water, would that make the engine run hotter or cooler?
Thanx to all for your responses.
I have cleaned the radiator exterior and the coolant that I put in as a replacement was a 50/50 mix. If the mix was more coolant and less water, would that make the engine run hotter or cooler?
Thanx to all for your responses.
It could be you've just got some scale inside. Aluminum does corrode it's just called scale instead of rust. Find a shop to power flush the system, with the theremostat removed, if the cap thing doesn't do it for you.
Administrator
Joined: Mar 2001
Posts: 368,079
Likes: 24,732
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
You may want to retry burping the system to ensure that all air is out. Hopefully that is all that may be causing the temp to be a bit higher.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Thread Starter
Drifting
Joined: May 2003
Posts: 1,755
Likes: 97
From: Sandy Utah
Thanks again Patches. It looks like the plan here is to only turn the cap 1/4 tp 1/2 turn and then stop. DO NOT PRESS DOWN. Allow the residual pressure to be relieved. I will try this the first chance that I get.
