CHT lowering tips?

[Zenaxia]

Im looking to drop my CHT's they climb up pretty quick getting above 230° after just some spirited driving in sport mode, would the gt350 water pump be a good upgrade? I currently have a reiche thermostat which helped drop the temps considerably and im using red line water wetter with about an 80-20 water to coolant ratio, some of you are reccomending the Aisin, I havent heard of that brand could someone drop a link for the s550 water pump if they have it?

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[Zrussian13]

Any info on your car? Base gt, pp1? Na or boosted? Does it happen quick or after prolonged driving, location, Etc... If your temps are climbing that quick without extreme outside temps and hard driving I'd start by making sure everything is working properly first.

 

[NGOT8R]

Have you considered the Davies Craig EWP 150?

Yes, the Davies Craig Electric Water Pump (EWP) has been demonstrated to reduce cylinder head temperatures (CHTs) on the Ford Coyote engine, particularly in high-performance or racing scenarios. By decoupling the coolant flow from engine RPM and adding a digital controller, the system provides superior thermal management compared to the stock mechanical pump.
OnAllCylinders +3
Key Findings on Coyote Cylinder Head Temps:

• Reduced Head Temperatures: Data logs from Coyote engines running the EWP showed that cylinder head temperatures ran cooler, with some logs showing CHTs staying below
  200∘F
  
  93∘C
  ) during high-performance sessions.
• Post-Session Cooling: The EWP reduces heat soak effectively because the pump and fans can continue running at full flow (
  
  
  ) after the engine is turned off, dropping temperatures rapidly.
• Consistent Flow: Unlike mechanical pumps, which can cavitate at high RPMs and reduce coolant flow, the Davies Craig EWP maintains constant, high flow rates regardless of engine speed, preventing hot spots in the heads.
• Performance Benefits: In addition to cooling, the EWP eliminates the parasitic drag of the stock water pump, which can provide an additional 8–13 horsepower

That offer a Coyote specific adapter kit for it too. I have one in mine, but haven’t tested it yet, as I’m still building the car. I can tell you that it does delete the thermostat.

https://www.summitracing.com/parts/dcw-dc-8970

https://www.summitracing.com/parts/dcw-dc-8660

 

[Skye]

If you're seeing 230 F / 110 C, how are the fans doin'?

What are temps when idle, in traffic?

Temps when driving "regular"?

Temps when driving spirited?

And yes, the nature of the car, how used, its history and physical setup.

 

[Blueflash]

Rislone Hy-per Cool super coolant

 

[horsepower addiction]

None of the suggestions are going to help. Get a cylinder cooling mod or head crossover kit. The cht sensor is in the wrong head in the back where there is not a lot of coolant flow. The kit fixes it

 

[engineermike]

The fan doesn’t come on fully until about 230 unless you have it tuned otherwise. Get programming software and set up the fan temps you want. My experience is this has more influence than any hardware mod to the cooling system.

 

[horsepower addiction]

To each his own but cylinder head cooling mod worked for me

 

[NGOT8R]

I also have the head cooling mod too. I haven’t done any testing on it though, but figured it would be good insurance. Something I’d like to point out about this mod is, it would be next to impossible to do with the engine in the car. Either the e fine or the tranny must come out. I took the opportunity to install mine during a tranny build.

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