Hello everyone, I have been fighting with this low speed/ stop and go traffic cooling issue for about a month now. My goal is to build a single turbo cobra that can be driven in the hottest of Texas summer heat and still run cool enough to use the air conditioner whenever I want. I know this wont be an easy task but I would like to try anyway. The car is an 03 cobra with a hellion single turbo, comp turbo ct-7879 and if ran too long, it overheats. It doesn't seem to reach a temperature that it will not exceed, like in most vehicles.
So far I have done the following cooling mods:
Canton aluminum radiator tank
Mishimoto radiator
70/30 mix, water/coolant
Added 6 oz. of Royal Purple's Purple ice
160 degree thermostat
Comp Turbo turbo blanket
All but a few inches of the hotside wrapped
Stock fan with the weatherstrip mod
Earico's weatherstrip mod-
http://www.svtperformance.com/forums/engine-tuning-214/772762-my-mishimoto-radiator-install.html
I don't have my water temp gauge installed yet, but it will be going in within the next week or so, so I can get more exact temps. Right now I am getting my temps from the TEST mode in the gauge cluster. I have not yet installed a head cooling mod. I have one but I am missing a part and need to have another one made. It seems to me that the car will heat up relatively slowly. For reference, it seems to heat up slower than when it was stock. Once it reaches operating temps from normal, low-traffic, driving it will stay above normal operating temperature. I have found that in the morning driving to work, it will be between 90 to 93 degrees outside. On the freeway traveling at 75 mph, it usually stays below 185 Fahrenheit. Once I get off the freeway, it takes me about 10 minutes to get to work. In that 10 minutes it can reach 194 Fahrenheit. Does that seem normal?
When driving around town, I have seen the coolant temps go from 177 F, to 191 F, while accelerating from roughly 10 mph to 65 mph normally. Not using any boost. This was in the afternoon when the outside temperature was around 100 or so. Does this seem normal?
The problem seems to be at its worst if the car has to run at idle. It is especially bad when using part throttle at low speeds. Heat builds and builds and the only way to cool the car off is to get on the freeway going 80 mph. Even then it doesn't bit come back down very much. This seems like an air flow problem to me but with limited space in the front of the a/c condenser, installing a pusher fan does not seem to be an option for me. The intercooler is taking up much of the space below the bumper support and behind it. I have measured the actual surface area on the a/c condenser that I could use to place a pusher fan, and the space is only about 6" tall and 15" wide. Looking at summit and jegs shows me that the only pusher fans that will fit in that small of an area are only moving 350 CFM. If I put two of them on there does anyone think it will make any difference? I'm thinking not.
My next move is going to be data logging intake air temps, in case they are too high. I have already checked to make sure my high speed fan is working. Does anyone have any suggestions on what else to do next? I'm kind of stumped. I have done many searches and haven't found too many other with this exact problem. Any help would be much appreciated. Sorry for the novel. Thanks very much in advance.
Richie
So far I have done the following cooling mods:
Canton aluminum radiator tank
Mishimoto radiator
70/30 mix, water/coolant
Added 6 oz. of Royal Purple's Purple ice
160 degree thermostat
Comp Turbo turbo blanket
All but a few inches of the hotside wrapped
Stock fan with the weatherstrip mod
Earico's weatherstrip mod-
http://www.svtperformance.com/forums/engine-tuning-214/772762-my-mishimoto-radiator-install.html
I don't have my water temp gauge installed yet, but it will be going in within the next week or so, so I can get more exact temps. Right now I am getting my temps from the TEST mode in the gauge cluster. I have not yet installed a head cooling mod. I have one but I am missing a part and need to have another one made. It seems to me that the car will heat up relatively slowly. For reference, it seems to heat up slower than when it was stock. Once it reaches operating temps from normal, low-traffic, driving it will stay above normal operating temperature. I have found that in the morning driving to work, it will be between 90 to 93 degrees outside. On the freeway traveling at 75 mph, it usually stays below 185 Fahrenheit. Once I get off the freeway, it takes me about 10 minutes to get to work. In that 10 minutes it can reach 194 Fahrenheit. Does that seem normal?
When driving around town, I have seen the coolant temps go from 177 F, to 191 F, while accelerating from roughly 10 mph to 65 mph normally. Not using any boost. This was in the afternoon when the outside temperature was around 100 or so. Does this seem normal?
The problem seems to be at its worst if the car has to run at idle. It is especially bad when using part throttle at low speeds. Heat builds and builds and the only way to cool the car off is to get on the freeway going 80 mph. Even then it doesn't bit come back down very much. This seems like an air flow problem to me but with limited space in the front of the a/c condenser, installing a pusher fan does not seem to be an option for me. The intercooler is taking up much of the space below the bumper support and behind it. I have measured the actual surface area on the a/c condenser that I could use to place a pusher fan, and the space is only about 6" tall and 15" wide. Looking at summit and jegs shows me that the only pusher fans that will fit in that small of an area are only moving 350 CFM. If I put two of them on there does anyone think it will make any difference? I'm thinking not.
My next move is going to be data logging intake air temps, in case they are too high. I have already checked to make sure my high speed fan is working. Does anyone have any suggestions on what else to do next? I'm kind of stumped. I have done many searches and haven't found too many other with this exact problem. Any help would be much appreciated. Sorry for the novel. Thanks very much in advance.
Richie
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