AC or Heater turned on for cool down time?

[denniegst]

Well i couldnt ask this question on the recent turbo timer thread beacuse its closed. If you have a dry CHRA will turning on my ac or heater help aid in the cool down time; or will neither make a difference. im only asking this because im planning on getting dry CHRA.

 

[elfroggo]

When does turning on the AC ever help cooling? It does activate the driver side fan but that's about it. Extra load on the engine, extra heat from condensor, all bad. Circulating coolant through heater core helps some though.

 

[Mikael]

When does turning on the AC ever help cooling? It does activate the driver side fan but that's about it. Extra load on the engine, extra heat from condensor, all bad. Circulating coolant through heater core helps some though.

When to the fans come on normally? Most cars its about 230. Running the a/c at a stop will keep it well below that.


The best solution would be a fan switch and running the heat.

 

[MyBeatGSX]

I'm assuming you're refering to turbo cool down time. No it won't speed it up, you'll still need to TT it for the same length. But yes, running the heat does help the car run cooler.

 

[Old Mitsu Tech]

I'm assuming you're refering to turbo cool down time. No it won't speed it up, you'll still need to TT it for the same length. But yes, running the heat does help the car run cooler.

I agree. It will help if you are marginally overheating as it's extra air over a "radiator type core" It won't actually cool beyond a certain point as it was not designed to do so. The thermostat will counteract it as it should.

Good Luck

 

[Defiant]

Cooling off the water won't much help a spool that doesn't have water running through it.

Yes, the A/C fan being on will do more cooling from the airflow across the radiator than the heat from the condenser will add to the coolant temp. And, running the blower across the heater core will also aid in cooling the motor. The simple, single step for this on a DSM (and, most modern cars) is to turn the defroster on high, as this also engages the AC.
As for this cooler water jacket significantly transferring to the engine oil which is your only source of dry spool cooling, the results will be slight at best. Primary cooling of an overheated dry spool will be through conduction of a non-compressing turbo pumping cool air through the intake side and carrying heat off to the intercooler from the snail. At low speeds/light load, the exhaust is similarly cooling.