I knew I'd seen that someplace, but totally forgot it was HP Tuners. The service manual only gives the high and low limits.
Thermostat Operating Range
Safety Car
Joined: Aug 2006
Posts: 4,147
Likes: 452
From: Port St. Lucie West Florida
Do you know why they said to use the stock stat and not a 160? The dealer said its for emissions. So basically if I used the stock stat with the a/c fans on then I should achieve those approximate temps. The center front chin spoiler was missing because the P.O. Must have it a high curb when parking so the part came in and they will install it for me. That little air dam should make the car slightly cooler as the flow of air will now be directed into the radiator. Lucky I saw that before I bought the car. This car is lower than my old C4. I could barely get my head under the car to check everything. Another stupid question what is the stock stat for a 2007 ? Thank you
Le Mans Master
Joined: Jan 2008
Posts: 6,457
Likes: 297
From: corpus christi Texas
Do you know why they said to use the stock stat and not a 160? The dealer said its for emissions. So basically if I used the stock stat with the a/c fans on then I should achieve those approximate temps. The center front chin spoiler was missing because the P.O. Must have it a high curb when parking so the part came in and they will install it for me. That little air dam should make the car slightly cooler as the flow of air will now be directed into the radiator. Lucky I saw that before I bought the car. This car is lower than my old C4. I could barely get my head under the car to check everything. Another stupid question what is the stock stat for a 2007 ? Thank you
Last edited by Cherokee Nation; Mar 30, 2016 at 10:12 PM. Reason: add
Racer
Joined: Feb 2015
Posts: 274
Likes: 9
Oil temps are somewhere near the 200 mark. The thermostat with the fans coming on earlier will keep the engine about 20 degrees cooler than the stock stat it comes with. The thermostat will do its job opening up at the lower temp, but the fans need to do their job to cool the water when at idle. With the combination of the stat and the tune it really does run about 20 degrees cooler at all times.
Safety Car
Joined: Aug 2006
Posts: 4,147
Likes: 452
From: Port St. Lucie West Florida
Thanks all. I will use a lower stat. This car is not a DD. I do not have to reprogram the fans because the A/C is almost always on. With the stock setup in traffic ,a/c on it hit almost 220 at a light. Too warm for me. I will change the coolent and stat soon. That should be an improvement. The radiator looks like it would be difficult to replace. Does the condenser have to be removed to replace the radiator ? The C4 to me was easier to replace. Hopefully I won't have to replace it.
Le Mans Master
Joined: Jan 2008
Posts: 6,457
Likes: 297
From: corpus christi Texas
Thanks all. I will use a lower stat. This car is not a DD. I do not have to reprogram the fans because the A/C is almost always on. With the stock setup in traffic ,a/c on it hit almost 220 at a light. Too warm for me. I will change the coolent and stat soon. That should be an improvement. The radiator looks like it would be difficult to replace. Does the condenser have to be removed to replace the radiator ? The C4 to me was easier to replace. Hopefully I won't have to replace it.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,106
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Thanks all. I will use a lower stat. This car is not a DD. I do not have to reprogram the fans because the A/C is almost always on. With the stock setup in traffic ,a/c on it hit almost 220 at a light. Too warm for me. I will change the coolent and stat soon. That should be an improvement. The radiator looks like it would be difficult to replace. Does the condenser have to be removed to replace the radiator ? The C4 to me was easier to replace. Hopefully I won't have to replace it.
The bottom line is that you can't expect the AC values to control the ECT, since they will almost always be less than the stock fan settings. Reprogramming the fans to lower values will assure they will force the fans on at lower ECT.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,106
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Safety Car
Joined: Aug 2006
Posts: 4,147
Likes: 452
From: Port St. Lucie West Florida
The stock stat is 187...They used a 180 high flow stat, and with the fan set to come on sooner it should run in the middle 190's when moving, many experts say 195 is the sweet point for these engines. The tuner said if they put in a 160 stat it would run to cool in the winter and the oil temp would take to long to warm up and that's not good!...This winter, the lowest temperature down my way only got down in the 40's.If I had a 160 stat without changing the fan table it will heat up as a normal, just takes a little longer....The air dams do no good in town. I took my torn up one's off 3 years ago and no change in coolant temp.They may help a little on the freeway at 75mph,my coolant stays at about 194/196 on the freeway even in the HOT summers down here, and that is ok with me.Enventr:Try a 180 Hypertech stat, it doesn't take very long to change it over.
Last edited by enventr; Apr 3, 2016 at 04:48 AM.
Le Mans Master
Joined: Jan 2008
Posts: 6,457
Likes: 297
From: corpus christi Texas