How do modern cars regulate temperature so well?

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MrJLR

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My new cars hold the water temperature dead on...in ALL conditions. AC on....110 degrees outside. ...up hills...etc. Temps never vary at all.

I'd love my Cuda to do the same....
What are they doing so different?
I run a small block 318 with an aluminum radiator and electric fans with a Autocoolguy controller.

Jeff
 
I think the gages don't move around like the older gages. They stay at "normal" position without moving unless it reaches a temp out of that range. So you can sit at a stop light, drive thru, or whatever and it won't move even if your engine temp is climbing a little. I could be wrong, I'm no new car expert .... LOL
 
I think the gages don't move around like the older gages. They stay at "normal" position without moving unless it reaches a temp out of that range. So you can sit at a stop light, drive thru, or whatever and it won't move even if your engine temp is climbing a little. I could be wrong, I'm no new car expert .... LOL
So they are lying....that WOULD explain it!

Jeff
 
That's utterly ridiculous to think that the gauges are lying... I'm going to go with a superior cooling system... Because like the op sad nobody likes to worry about their temperature... The superior cooling system helps longevity as well..
 
My new cars hold the water temperature dead on
My theory is they have over sized radiators (not necessarily physically, but efficiency) my mini van has more radiator than my dart and dart has 1.7 more liters.
PROPERLY sized electric fans and controllers will make a difference as well

All that being said. There is a hill on the interstate near my house, long and steep. When going up in the winter you can feel the heater air get hotter as you crest the top (Mini van).
 
PROPERLY sized electric fans and controllers will make a difference as well

All that being said. There is a hill on the interstate near my house, long and steep. When going up in the winter you can feel the heater air get hotter as you crest the top (Mini van).
True on the fans.... I too, can feel the difference on our mustang by grabbing the radiator hose between a cold Fall day or a Hot Summer day, yet the gage reads the same...... I think if the temp stays in "normal" op range, the gage stays still. Again, I could be wrong....
 
My new cars hold the water temperature dead on...in ALL conditions. AC on....110 degrees outside. ...up hills...etc. Temps never vary at all.

I'd love my Cuda to do the same....
What are they doing so different?
I run a small block 318 with an aluminum radiator and electric fans with a Autocoolguy controller.

Jeff


They design the cooling systems for worst case...

They test Jeeps in Death Valley pulling 5000 lb trailers with the A/C cranked and make sure that they don't overheat... There are signs in Death Valley that warn people to turn off the A/C to keep from overheating the engines for cars even without pulling trailers...

They make sure that the Jeeps can survive with the A/C on.... If you can make it through Death Valley with the A/C on while pulling a 5000 lb trailer, then you should be able to handle any other heat...
 
That’s like asking why my 2003 Honda CRV looked like new 15 years later and my 1969 Dodge Dart self-destructed into a pile of rust in 1983 after 6 years of constant mechanical issues. Cars are made better today.
 
They design the cooling systems for worst case...

They test Jeeps in Death Valley pulling 5000 lb trailers with the A/C cranked and make sure that they don't overheat... There are signs in Death Valley that warn people to turn off the A/C to keep from overheating the engines...

They make sure that the Jeeps can survive with the A/C on.... If you can make it through Death Valley with the A/C on, then you should be able to handle any other heat...
Well that's how I want my system....
I NEVER worry about my new cars and I want to never worry about the Cuda...
Bigger capacity radiator? More fan?

Jeff
 
Another utterly ridiculous analyzation comparison... Grabbing the outside of a radiator hose in different weather conditions LOL... your temperature sensor is going to read what's going on inside your engine not on the outside of your radiator hose LOL...
 
Well that's how I want my system....
I NEVER worry about my new cars and I want to never worry about the Cuda...
Bigger capacity radiator? More fan?

Jeff


They use different seals to keep the air going through the radiator and not AROUND it... Then fan shrouds and fans are tested for best performance...

They test the Jeeps parked one foot from a wall and make them idle for over 1/2 hour to make sure that the fan, shroud, and seal packages direct the air to go through the radiator and the wind doesn't sway the results...


The climate control and engine cooling groups work together to develop the cooling module (radiator and condenser with the seals)... They take road test trips every winter and summer to extreme temperatures to validate that their systems work properly... There is lots of testing and validation on the components to make sure that they work properly... They do lots of lab testing before the road trips to make sure that they will survive the extreme temperatures... There are many people working on it to get it right...
 
Most modern dashboard gauges don't have any numbers on them, so you don't really know what the modern engine is running at. Do you know what the "normal" temp is for a modern engine? It's higher than in the 1960s. Higher pressure systems allow allow higher temperatures. Obviously, the radiators and fans are also better.
 
That’s like asking why my 2003 Honda CRV looked like new 15 years later and my 1969 Dodge Dart self-destructed into a pile of rust in 1983 after 6 years of constant mechanical issues. Cars are made better today.
Cars are made better today....
Why can't my Cuda be made better....that is the essence of my thread.

Jeff
 
The manufacturers aren't STUPID!!! They know that making the gauges read perfect all the time enhances the driving experience so that you always give the car high praise and this ....................................drives sales "up"!!!

IT'S ALL ABOUT THE MONEY.
 
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Cars are made better today....
Why can't my Cuda be made better....that is the essence of my thread.

Jeff


Because back in those days, the car companies gave you what you got... They weren't trying too hard to give us the best that they could do...

It wasn't until the Japs came in and started taking over the market, that the OEM's started trying harder to give us better products...

The foreign car companies came in and started doing it better, so the OEM's had to step up their game or loose their business...
 
MrJLR, what are your temps doing with that PWM controller doing the fan work? It should be pretty close to what the radiator can cope with. Do you have a full shroud and hood seals? Those Hondas are bull like refrigerator doors with all their hood seals and radiator shrouds. regulating the bottom just determines what the temp of the coolant leaving the radiator is. What if you monitored the upper rad hose for engine coolant temp? Engine pulling more is going to tax the cooling system so if your controller sees hotter coolant coming out of the motor, maybe it would be able to better regulate the engines temp?
 
MrJLR, what are your temps doing with that PWM controller doing the fan work? It should be pretty close to what the radiator can cope with. Do you have a full shroud and hood seals? Those Hondas are bull like refrigerator doors with all their hood seals and radiator shrouds. regulating the bottom just determines what the temp of the coolant leaving the radiator is. What if you monitored the upper rad hose for engine coolant temp? Engine pulling more is going to tax the cooling system so if your controller sees hotter coolant coming out of the motor, maybe it would be able to better regulate the engines temp?
It runs 190 most of the time, but when it's hot outside it climbs over 200 - 205....
That's without AC which I am definitely going to add AND a mild 318 build....couldn't imagine what it would do with AC and more hp (stroker planned in future)
Some days when the outside temperature is mild, 190 around town and 180 on the freeway. ...
It's all over the place.

All seals in place and good condition.

Jeff
 
Because back in those days, the car companies gave you what you got... They weren't trying too hard to give us the best that they could do...

It wasn't until the Japs came in and started taking over the market, that the OEM's started trying harder to give us better products...

The foreign car companies came in and started doing it better, so the OEM's had to step up their game or loose their business...
Consumer Reports always lists American cars at the bottom. In recent years, after the bailout, some are up higher.
 
An engine that gets 30 miles to the gallon will run cooler than something that gets 8. Energy equals heat.

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