Choosing a radiator for occasional track days, help

[PointByPatrol]

Had a track day last week at Sebring Raceway with highs of 55 degrees and very windy. 3 laps in, I was at 205 degrees coolant and 235 degrees oil temps while short shifting and coasting on straights.

Since then I’ve purchased a HEL oil cooler and now want to pick a radiator to just assist a little more. I’m trying to not ball out if possible.

Options, total cost:
Koyorad: $470 shipped
CSF: $740 shipped
PWR Street: $970 shipped

At this point, I’m not willing to spend $2,000 on the amazing WOT triple pass.

I’ve read of 2 people saying their Koyorad radiator failed, none for CSF or PWR.

I’m really leaning to CSF or Koyorad, is CSF that much better or are they very similar? Is PWR street worth it over those two?

My current mods: PRL intake, PRL intercooler, PRL RMM, PRL coolant tank, TSP downpipe, tuned.

How occasional are we talking?

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[Nikw91]

How occasional are we talking?

I ended up going with CSF when they went on sale for $600 on Cobb’s website

 

[AspecR]

How occasional are we talking?

From what I gather, not as consistently as you but more so than the average FL5 owner

I ended up going with CSF when they went on sale for $600 on Cobb’s website

Gotta love a good sale

 

[Nikw91]

From what I gather, not as consistently as you but more so than the average FL5 owner


Gotta love a good sale

Love a great sale!

I went for the first time November 2025. Got all my cooling mods and went back March 2026.

Going back in April and June, weather permitting.

So 4 times in 8 months is roughly every other month.

 

[Jack90210]

I have pwr radiator for sale. Let me know if you guys are interested. It's just sitting in my garage

Which spec?

 

[Nikw91]

Which spec?

i think it was weekend warrior he listed

 

[ChampionshipWhiteFL5]

Had a track day last week at Sebring Raceway with highs of 55 degrees and very windy. 3 laps in, I was at 205 degrees coolant and 235 degrees oil temps while short shifting and coasting on straights.

Since then I’ve purchased a HEL oil cooler and now want to pick a radiator to just assist a little more. I’m trying to not ball out if possible.

Options, total cost:
Koyorad: $470 shipped
CSF: $740 shipped
PWR Street: $970 shipped

At this point, I’m not willing to spend $2,000 on the amazing WOT triple pass.

I’ve read of 2 people saying their Koyorad radiator failed, none for CSF or PWR.

I’m really leaning to CSF or Koyorad, is CSF that much better or are they very similar? Is PWR street worth it over those two?

My current mods: PRL intake, PRL intercooler, PRL RMM, PRL coolant tank, TSP downpipe, tuned.

So your oil temperatures are within normal driving parameters 190-210. The coolant was a few degrees higher than normal operating temperatures.

I track quite a bit, not yet with the FL5, but never had any issues with overheating. Ran 30 laps with my TLX Type S. And it was pretty hard! The brakes were shot lol

 

[Nikw91]

So your oil temperatures are within normal driving parameters 190-210. The coolant was a few degrees higher than normal operating temperatures.

I track quite a bit, not yet with the FL5, but never had any issues with overheating. Ran 30 laps with my TLX Type S. And it was pretty hard! The brakes were shot lol

i ended up making a ton of changes to my setup including a CSF radiator and I was able to run all out for a 20 minute sessions in 87 degree Florida heat.

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