High temp

[Eskedal]

Hi

I have en Gen 2 Gts, when I drive under 60 mph the temperature is going upwards. I dont like it, do you guys have any tips to get it better?

This have I done:
New stock radiator.
New bigger fan
180 thermostat
New Silicone hoses
Waterwetter and 30% glycol in water.
I run with a manuel switch inside the car with a big 200amp rele to turn on the fan.


Next I maybe will do, is to cut under the front bumper like Corvette c5/6 design to get more air in to the radiator. Any tips I would like to hear it.

[dave6666]

I drive my car in 100+ temps and don't run hot. One of the problems is people go the Pep Boys route on these cars. The factory engineers were/are not stupid. Just because you can pull a factory part off and replace it with something else that has no documented evidence that it works, doesn't mean you should. I believe that action is commonly called upgrading. You know, taking a factory item off and replacing it with something else even if the something else is junk. Your coolant fits that ticket and there are many cooling things people try instead of addressing the root cause of their issue.

I'd be interested to know a few things about what you have done that are in your list.

*Factory radiators are unicorn parts these days. Did you truly indeed have one stashed away? An OEM Mopar Gen 2 radiator?

*What bigger fan? The OEM later model factory Gen 2 fan? Or an aftermarket fan? If so, what brand and what shroud?

*180 stat is a good choice although it won't affect your operating temp. Thermostats don't cool the car.

*The silicone hoses are also a good choice but just like the thermostat don't affect operating temp.

*The water wetter falls in to the category of Pep Boys downgrade. Use the Mopar HOAT orange.

Things you don't clarify.

*Do you maintain the proper level in your fascia bottle and is the hose to it clamped at the surge tank?

*Are you aware the safe/normal operating temperature of the Gen 2 is 225F?

*How old is your water pump?

*How old is your belt and tensioner? Are you aware the recommended service life of the belt is 4 years and you're supposed to change the tensioner every time you change the belt?

Other improvements.

*Pusher fans. I have 2 on my car.

*Vented cowl. Autoform makes a nice one. I have one on my car.

*The Roe duct. It helps at speeds above 30mph but not stuck in traffic. I have had one.

Other comments/questions.

*The 200 amp relay is extreme overkill. Why did you do that?

*My car reaches best cooling equilibrium at 70mph+ Does yours cool better or worse at that speed?

[Eskedal]

Thanks for many great tips Dave666!

At first I meant 40mph not 60 mph. Under 40mph the temp is going up.

*Factory radiators are unicorn parts these days. Did you truly indeed have one stashed away? An OEM Mopar Gen 2 radiator?
Sorry my fault, radiator is recored one not a OE Dodge. Is in copper

*What bigger fan? The OEM later model factory Gen 2 fan? Or an aftermarket fan? If so, what brand and what shroud?
Is a aftermarket fan, pull type, can to remember size, same size as stock if I remember correct. With the fan on the temperature dont rise. But a car with a speed at 30mph should not run hot without the fan on.

*180 stat is a good choice although it won't affect your operating temp. Thermostats don't cool the car.
Yes I know that

*The silicone hoses are also a good choice but just like the thermostat don't affect operating temp.
Yes correct

*The water wetter falls in to the category of Pep Boys downgrade. Use the Mopar HOAT orange.
Water wetter works, I have tried many times on R motorbikes in dynobech, water temp drops alot.

Things you don't clarify.

*Do you maintain the proper level in your fascia bottle and is the hose to it clamped at the surge tank?
Stock is broken, I have made a new one in aluminium, yes connected to Surge tank.

*Are you aware the safe/normal operating temperature of the Gen 2 is 225F?
Yes but I dont like it. Is to high, I would like to have a stable temp at 180-195, and with a speed at 30mph.

*How old is your water pump?
Stock from 97, heater core is working very quickly after start up. I think the pumpe work as it should do.

*How old is your belt and tensioner? Are you aware the recommended service life of the belt is 4 years and you're supposed to change the tensioner every time you change the belt?
Belt and tensioner is new

Other improvements.

*Pusher fans. I have 2 on my car.
You have 2 in front of the radiator? I works better than pull type?

*Vented cowl. Autoform makes a nice one. I have one on my car.
Does it help for you?

*The Roe duct. It helps at speeds above 30mph but not stuck in traffic. I have had one.
Do you have a pic of the mod? (I can not explain what I am wondering in English)

Other comments/questions.

*The 200 amp relay is extreme overkill. Why did you do that?
Why not, the fan is going to much for my taste, with 200amp it will not break

*My car reaches best cooling equilibrium at 70mph+ Does yours cool better or worse at that speed?

at 60mph it cools really well, temperature is falling down to first stretch of those three very quick.


Maybe I dont get all the hot air out from the engine bay, perhaps I need to cut some holes in the hood to get the hot air out of the engine bay.

Sorry for my english

[SharpesGarage]

Dave nailed it

you answered as i was typing, why do you want to run it so cool? Unlikely to keep it under 200 in normal driving conditions.

[Eskedal]

Dave nailed it

you answered as i was typing, why do you want to run it so cool? Unlikely to keep it under 200 in normal driving conditions.

I lost a intake valveseat for 2 years ago because to hot engine.
Yes 200 is ok, but drives at a speed at 30mph I should not have to use the fan to hold the temp down. Is only 15 celsius where I live right know.

[JonB ~ PartsRack]

D6 that post should be a G1 G2 STICKY

200f - 225f is NOT a problem at any speeds. Drive Happy.

[RyanLS.GEN2]

Bigger fan is not always better, its hard to beat the late gen2 fan, most after market, especially any thing with straight blades can't touch the OE cfm no matter how they are advertised.

[Viper Red]

Hi
I have en Gen 2 Gts, when I drive under 60 mph the temperature is going upwards. I dont like it, do you guys have any tips to get it better?

Depends on what "going upwards" exactly means, you might not like it but it doesn't mean it's that bad.
Coolant temps on these cars are pretty bouncy anyways.

[Bill W]

Just a thought: you might try a new coolant temperature senser to be sure your guage is accurate. Also check this out: https://motoiq.com/project-viper-gts...ry-temp-gauge/