Cooling Issues
Thread Starter
Racer
Joined: Feb 2005
Posts: 373
Likes: 1
From: Bayonne NJ
Cooling Issues
Ok, so i got my vette back from tuning last week.. on the 60 milesdrive home it was running hot.. around town it was around 220.. but when i got on the highway it rose to almost the red.. the fan clutch that i had was no good so i switched to a mechanical flex fan when i got home.. my aux fan is not hooked up just yet.. Do you think that the problem was with my thermostat,since temps rose when i was on the highway rolling at about 65mph? I replaced the thermo but i haven't taken the vette back out.. i put a 180 in it..
Melting Slicks
Joined: Oct 2004
Posts: 2,662
Likes: 8
From: Knoxville Tennessee
Run a high volume t-stat. Are all your seals in place around your radiator? Are you running a front spoiler? Are your hoses new and not collapsing?
My '79 ran no more than 180 all day today no matter how I drove it;am running twin 12 inch electric fans as well as the stock mech. fan. Have heard that the flex fans that run all the time are not that good. Read the thread about the Mark VIII fan on the current page along with the links theat PhotoVette1 posted. Good info!
Bernie
My '79 ran no more than 180 all day today no matter how I drove it;am running twin 12 inch electric fans as well as the stock mech. fan. Have heard that the flex fans that run all the time are not that good. Read the thread about the Mark VIII fan on the current page along with the links theat PhotoVette1 posted. Good info!
Bernie
Thread Starter
Racer
Joined: Feb 2005
Posts: 373
Likes: 1
From: Bayonne NJ
The thread about the MARK VIII fan is what actually inspired me to create this thread.. I dont have my front spoiler, but b4 the rebuild it wasn't on either but i had no cooling issues.. I think that i may just switch to the electrical system.. does the spoiler really help cooling issues that much?
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From: Cape Cod, Mass.
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If you're running hot on the highway I would think the radiator would be the most likely culprit.
Melting Slicks
Joined: Jul 2004
Posts: 2,863
Likes: 195
From: Maryland
Originally Posted by capevettes
If you're running hot on the highway I would think the radiator would be the most likely culprit.
How old is the radiator? As to the fanclutch and shroud setup I would stick to the stock units. As a corordinated system the stock setup is best.
Last edited by Donald #31176; Jul 17, 2006 at 09:23 AM.
Thread Starter
Racer
Joined: Feb 2005
Posts: 373
Likes: 1
From: Bayonne NJ
The radiator is from about 96 but the car wasn't drivin more then 2000 miles from then til now, so it is relatively new.. i haven't driven the car since i changed the thermostat. i gotta set up an electrical fan system
Burning Brakes
Joined: Jan 2006
Posts: 876
Likes: 1
From: Same as our leaders Out of my mind
Originally Posted by BanGnGearS
The radiator is from about 96 but the car wasn't drivin more then 2000 miles from then til now,
Originally Posted by BanGnGearS
so it is relatively new.. i haven't driven the car since i changed the thermostat. i gotta set up an electrical fan system
Sounds like it might be time to flush that cooling system....
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Thread Starter
Racer
Joined: Feb 2005
Posts: 373
Likes: 1
From: Bayonne NJ
I got it flushed maybe 1 an a half years ago.. maybe i should do it again.. I also have no overflow.. could that be a problem... anyone use that redline water wetter solution? any thoughts on that
Pro
Joined: Sep 2002
Posts: 620
Likes: 2
From: San Antonio TX
The front spoiler is critical to cooling. At idle or low speeds, the fan is working to suck air in. The spoiler doesn't really do anything until the car gets moving. As engine (and highway) speed increases, the clutch (or flex fan) begins to stop working and the spoiler takes over, diverting air into the radiator. Without the spoiler, that air is not channelled properly.
That would be the simple explanation as to why temps are OK at idle but high at cruise speeds.
That would be the simple explanation as to why temps are OK at idle but high at cruise speeds.
Race Director
Joined: Feb 2005
Posts: 16,100
Likes: 17
Originally Posted by BanGnGearS
I got it flushed maybe 1 an a half years ago.. maybe i should do it again.. I also have no overflow.. could that be a problem... anyone use that redline water wetter solution? any thoughts on that
Safety Car
Joined: Mar 2005
Posts: 3,503
Likes: 2
From: Raleigh NC
Originally Posted by rihwoods
Don't use that stuff unless you are going to put straight (distilled)? water in your system...it is not a good idea to use it with 50/50 coolant mix...
Pro
Joined: Sep 2002
Posts: 620
Likes: 2
From: San Antonio TX
Originally Posted by BanGnGearS
has anyone noticed temp changes when using the water wetter?
havent' put any in with the new radiator. Didn't need to as it never got over about 180-190.
Now with the new tranny and higher stall torque converter, I'm thinking about trying it again.