Who'd a guessed?

[shorty]

""To Keep the engine cool, It Moves 45 Liters of Coolant Per Minute!
Again, this is insane. When you run as fast as the Hellcat does though you need that. The reason is to keep the intake air temperature to 140 Degrees F, and coolant temperature to 100 degree, allowing the engine to reach it’s full potential.""

Just wondering if we could increase the capacity of our radiators (ours have space for an extra row or two) if that would lower our temp any. :dontknow:

Question is, would lowering our temp make the 10's run any better---faster? :dontknow:

 

[ARRESTmeRed04]

The factory cooling system is more than enough, a 170* thermostat is generally what we switch to to lower the temp, your ecm will need to be reprogrammed to kick the fans on at a lower temp or it will run about the same temp as stock in traffic but cooler on the highway.

 

[shorty]

Hmm, I have the 170 TS but can detect no change in temp in our 100+ degree temp here in Texas. I was just wondering if lowering our temp to say 150 (if possible) would be any advantage. I do know we can add capacity to our radiators but not sure if this will accomplish anything. Wondering if anyone here has tried this. The reason I feel it will help as when my temp hits 210 I turn on my heater and presto, the temp goes down rather quickly. Seems to me all I am doing is adding circulating capacity.

 

[ZCx]

like with anything, ya can go too little or too much.

150 is not enough to help get the fuel burned, to burn off harmful stuff in the oil.

i have 170 stat. she runs 170 when the outside temp. is 60 & below and 180 60 & up

 

[ARRESTmeRed04]

If you're hitting 210 with a 170 tstat going down the highway then you've got something not working like it should and a larger radiator would just be a band aid fix. Have you tried a water pump?

 

[VENOMOUS1 RACING]

Likely just need to turn the fans on earlier than Chris has them set now. We haven't even seen 90's yet. Aren't you running below 200?

 

[shorty]

Likely just need to turn the fans on earlier than Chris has them set now. We haven't even seen 90's yet. Aren't you running below 200?

No sir, just preparing. How would tuning the fans to come on earlier affect the high end temp? When I open the heater the temp goes down, close it and it goes back up. Or----can drop the speed then all is ok but Scott, you know that is not gonna happen.

Just really surprised about the low temp on the Hellcat. Does it burn burn all the fuel and all the harmful stuff in the oil? Seems a contradiction from our engines to the Hellcat. :dontknow: One needs lower temp to run its best and the other runs better at a higher temp. My stupid I guess. :dontknow:

 

[Chuck B]

Having put over 150K miles and 10+ yrs ownership living mostly in desert climates I've found our SRT10's cooling system a bit lacking. Under normal conditions it can keep temps under control but certainly not steady. Once our temps soar towards/beyond 110F I can easily get the coolant hot enough that the ECU is pulling timing. Feels like someone threw a boat anchor out the back when it does lol.

I have an Xterra (and other vehicles) who's coolant needle never moves no matter what the conditions under normal usage. Only time my Xterra's needle moved was when I had to pull a trailered Wrangler up a 8% for nearly 4500ft elevation gain in 105+F temps...and it only went up slightly. Peddle was floored, rpm's 4K+ and barely able to maintain over 55 mph the whole way.

My system is completely stock (so is truck) but would consider reprogramming to have fans kick on faster earlier as well as a more efficient radiator.

 

[VENOMOUS1 RACING]

Having put over 150K miles and 10+ yrs ownership living mostly in desert climates I've found our SRT10's cooling system a bit lacking. Under normal conditions it can keep temps under control but certainly not steady. Once our temps soar towards/beyond 110F I can easily get the coolant hot enough that the ECU is pulling timing. Feels like someone threw a boat anchor out the back when it does lol.

I have an Xterra (and other vehicles) who's coolant needle never moves no matter what the conditions under normal usage. Only time my Xterra's needle moved was when I had to pull a trailered Wrangler up a 8% for nearly 4500ft elevation gain in 105+F temps...and it only went up slightly. Peddle was floored, rpm's 4K+ and barely able to maintain over 55 mph the whole way.

My system is completely stock (so is truck) but would consider reprogramming to have fans kick on faster earlier as well as a more efficient radiator.

All year round my QC stays at a lovely 180! Needle never moves! Lower temp stat and earlier fan activation are key.

 

[Psycho1122]

My question on this issue is water content in cooling system.

What Ratio do you run in your engine?

I run high water to antifreeze ratio...70% de-ionized water and 30% Ethylene-Glycol to improve heat transfer, minimize corrosion and more than adequate for freeze protection in my Arizona environment. This ratio mixed with the proper amount of "Water Wetter" is my proven recipe to improve on the ever important heat transfer from heads to radiator.

I also feel the under drive pulley slightly slowing down the overall flow rate through the radiator aids in heat dissipation.

All this provides a steady temperature consistently at or below 200 F. regardless of outside temperature or driving conditions.

Also, The stock thermostat temperature range was chosen to work well in an all aluminum engine combustion chamber environment. So I stick with it.

Cheers!

 

[Psycho1122]

Just really surprised about the low temp on the Hellcat. Does it burn burn all the fuel and all the harmful stuff in the oil? Seems a contradiction from our engines to the Hellcat. :dontknow: One needs lower temp to run its best and the other runs better at a higher temp. My stupid I guess. :dontknow:

Hellcat is a different animal. Overall Cylinder PRESSURE from forced induction dictates required operating temperatures to avoid detonation. Advanced engine management takes care of the rest.

On our normally aspirated, aluminum engines, 185-200 F. aids is obtaining proper combustion pressure. Fueling and timing aid in avoiding detonation.
Stock tunes run way over rich intentionally to override things like hot, oily gasses from the PCV and inefficient combustion chamber shape.

Cheers!

 

[shorty]

May look at getting a couple of extra rows in the radiator and certainly have Scott get a re-tune on the fan start up.

Thanks for all the input.

 

[572mopar]

I have a 170 stat and fans on @ 170 but im waiting for the good ol tex heat to come in and see what mine really does, but from what i can tell at a traffic stop light in 90deg. it climbs to 178-180 deg and the motor feels more responsive prolly from proper engine clearances so next fall ill change to a 180 stat, a motor runs faster with higher temp as long as detonation is controlled and IAT is cool. i worry more about the A/C and lack of airflow across the grill.

 

[MOD(S)QUAD]

""To Keep the engine cool, It Moves 45 Liters of Coolant Per Minute!
Again, this is insane. When you run as fast as the Hellcat does though you need that. The reason is to keep the intake air temperature to 140 Degrees F, and coolant temperature to 100 degree, allowing the engine to reach it’s full potential.""


It sounds to me that they are referring to intercooler water temp and not engine temp ?? Running 13#'s of boost you need to keep the intake charge cool to maintain efficiency . Each pound of boost increases air temp 8.5 degrees, hence the need for sufficient intercooler flow.

I think you may have misquoted what it said.

My .02

 

[shorty]

""To Keep the engine cool, It Moves 45 Liters of Coolant Per Minute!
Again, this is insane. When you run as fast as the Hellcat does though you need that. The reason is to keep the intake air temperature to 140 Degrees F, and coolant temperature to 100 degree, allowing the engine to reach it’s full potential.""


It sounds to me that they are referring to intercooler water temp and not engine temp ?? Running 13#'s of boost you need to keep the intake charge cool to maintain efficiency . Each pound of boost increases air temp 8.5 degrees, hence the need for sufficient intercooler flow.

I think you may have misquoted what it said.

My .02

I cut and pasted the post but maybe I should be reading between the lines. You are probably right as I have never know an engine to run that cool. thanks