see5see5run

I recently installed a ttix turbo kit, the power is addicting, but when I turn the AC on my coolant temps go up quickly as high as 225f before I shut it off. It doesn't matter if I'm sitting still or rolling down the highway at 70mph. As soon as I turn the ac off and start sweating the temps drop 20+ degrees. I have a 160 degree thermostat. Am running water wetter and probably around 70/30 water/coolant mix. Outside temps are 85+ In south GA. My fans are both comming on around 190,and it sounds like they are going full blast. I've cleaned all debris from the condenser and radiator. The air dam is under the intercooler. With the AC off under 75 degrees running it hard down the highway I saw 200 ish coolant temps and 220 oil temps that both went down after I let off and drove normally back home. I'm done burning up every time I drive in the sun! I've heard guys saying they can sit in traffic in 100degree weather and the coolant bearly breaks 200. I want that!! I'm willing to throw money at this problem but I don't want to waste money if there's a simple fix I'm not thinking of. If anyone has any experience with this please help!! Thanks!!

glennd

If you do not have an after market radiator such as a Dewitt or equivalent, install one, they have cooling fins twice the thickness of the stock radiator. I run about 100 F above ambient and about 107 F above ambient with the AC on.

mdaniel

Why do you think 225 is too hot?
Under 250 I wouldn't worry much.
225 isn't bad for warm weather with a FI C5 with a stock rad/fans.

MVP'S ZO6

225 isn't bad if it's hot outside and the AC is on and you are sitting still. Much more than that though and that's getting warm. For an example, if it's 85-90 out and the car gets above 235 that's too hot in most situations regardless of what you read on the web that's too hot. You can adjust your fan settings within the ECU.

pewter99

my solution to overheating/ running hot....keep in mind I am running a DEwitts with the SPAL fans too
https://www.corvetteforum.com/forums...light=pewter99

a/c man

BLOWNBLUEZ06@RKT Performance

You're running stock fans and radiator? You stuck your hands behind each fan to verify they were both working? There is a low speed and a high speed setting on these and it may sound like a second fan is coming on when it's only one going to high speed so if you haven't physically confirmed it, do.

I agree with the rest. 225 isn't an issue unless it's something that's changed all of the sudden when nothing else has. Another member that i know of is dealing with that very scenario. Temps all of the sudden are abnormally elevated and only one fan is working.

see5see5run

I'm not basing it on anything except for it didn't run that hot before the turbos so I'd like to find some sort of solution to keep it as cool as it was.. Around 200 degrees

see5see5run

When I got the car tuned I noticed the fans were comming on earlier, I'll check with my tuner and see when exactly he set them to turn on and when they should turn on high.

see5see5run

Definately going to check on that

see5see5run

Just cut a hole in the nose, hopefully it helps!

pewter99

hopefully you did more than cut a hole

Milan

Make sure your coolant cap is in good shape, buy a new one if it's old. Also make sure the air bubbles are out of the system. Anytime I hear of overheating with the AC on I always think the cap isn't holding pressure properly.

If it's staying at 225 though I wouldn't worry about it.

danieloneil01

Mine is the same way but I have a centri. If I command the fans on in high traveling down the highway at 60mph the temp stays around 210. Once I turn them off the temp will climb until I force them back on at 230.

My issue is the air dam up front and possibly the crap top plate. I would think if I also moved the radiator more forward at the top the air would be more likely to go into the radiator than over it. I just need to get a new radiator cradle and start over.

see5see5run

It seems to be staying lower now that I have a hole in the front but it hasn't been as hot outside so I'm still waititing to see. I think I'm going to get a tunnel port or ram air port so there isn't an ugly hole where the license plate cover use to be. I'll check the cap but there is no signs of leaking around it and my coolant level is right where it needs to be. I'm also going to work on some sheet metal or abs plastic ducting to make sure air is t going around the radiator. I think another issue may be that after I get into boost on a hot day the cooling system doesn't have the capacity to deal with all the underhood heat generated by the turbos. Along with I've done I'm going to get a dewitts radiator with the eoc and see how that does.

nutbuster

Just bought a dewitt radiator and the spal fan setup will let you know how mine works out.

madmatt9471

Subscribed!

Thanks,Matt

CactusCat

Me too... I'm just now getting my FI installed. Need to stay up on this stuff..

knewblewkorvette

see5see5run

I blew the radiator and condenser out with shop air... Previously used garden hose. No mo problems. It will creep up to 210 or so and cool back down to 198 in 90ish degree heat. Hurray! I still think I'm going to go with a better radiator but at least I don't have to wait until it's cool to drive the car. I thought I had it clean... Guess not. Next step I'm going to pull the radiator and clean it out even better!