[jaross]

What are the options? Is it only Mishimoto? I saw they had an introductory price of about $450, but now I can only find them for $660. Anyone know of any cheaper options or is that it?

 

[Ridges]

i am interested in this as well.

 

[danmad32]

Not sure it's really been proven to be much more effective than stock, but several places have it for <$500.

Mishimoto Performance Aluminum Radiator Ford Focus ST 2013+

 

[jaross]

Not sure it's really been proven to be much more effective than stock, but several places have it for <$500.

Mishimoto Performance Aluminum Radiator Ford Focus ST 2013+

thanks for the link.. was having trouble finding it on edge autosports site for some reason..

So what would you suggest to lower oil and coolant temps over an upgraded radiator? An oil cooler? Or just the grill shave + shroud?

Also, anyone running water wetter or something similar? Will it be okay in the winter?

 

[danmad32]

thanks for the link.. was having trouble finding it on edge autosports site for some reason..

So what would you suggest to lower oil and coolant temps over an upgraded radiator? An oil cooler? Or just the grill shave + shroud?

Also, anyone running water wetter or something similar? Will it be okay in the winter?

I would start with oil cooler then open up the shroud and add some sheet metal ducting and see if it works well enough for you. An FMIC would be really helpful from a general performance perspective if you don't already have one, won't lower coolant/oil temps much though.

I get 20 minute sessions in 85+ ambient weather and temps stabilize in the upper 220, low 230 range and oil is 260ish (real sensor, not oem gauge). Running a higher fraction of water and/or water wetter won't really do anything except slightly delay the inevitable if you are tracking the car. It's helpful for cars that struggle sitting in traffic with no airflow as water has a higher specific heat capacity meaning it takes more heat to raise it's temperature and then hopefully you start driving and it cools off before reaching a critical level. On the track the extra time it would buy at the very high heat loads would be very small. Ultimately it all comes down to the ability of the oil cooler and radiator to reject heat and they need airflow across them to do that. A more efficient design or larger surface area will help, but the Mishimoto unit isn't much larger. You can see my build progression and track videos with coolant temp data in my build thread.

http://www.focusst.org/forum/focus-...2-s-daily-driver-track-day-machine-build.html

 

[Bryman13]

Good info there @danmad23. I was expecting the Mishimoto to make a bigger difference. The limited space we have in front of our engine, it would seem, makes it difficult to get anything much more effective would you say? Or is it more that the ST comes with a pretty good radiator anyway?

 

[danmad32]

Good info there @danmad23. I was expecting the Mishimoto to make a bigger difference. The limited space we have in front of our engine, it would seem, makes it difficult to get anything much more effective would you say? Or is it more that the ST comes with a pretty good radiator anyway?

I think just limited space to make it any thicker. On the Fiesta ST they were able to fit a much larger one (2" vs 1" OEM) and did a custom fan shroud as well. On the Focus they only went from 27mm (1.07") to 34mm (1.34").

https://engineering.mishimoto.com/2...-first-prototype-evaluation-and-installation/