FK8 radiator fan

ayau

Senior Member
Joined
Aug 14, 2016
Messages
1,699
Reaction score
1,284
Location
USA
Car(s)
Subaru
Country flag
Per Spoon's recommendation, they suggest turning the radiator fans at lower temperature to maintain optimum water temperatures. They also suggest replacing with a lower temp thermostat and larger radiator. I don't think a lower thermostat will do anything but open up the cooling system earlier, but perhaps turning on the fan earlier may aid in track situations?

1596561628729.png


https://www.spoonsports.jp/blog/wp-content/uploads/2020/04/d9596471bfde6c29b1a59c3b3f6309e4.pdf





Advertisement

 

zspeed

Senior Member
Joined
Jun 4, 2020
Messages
1,144
Reaction score
613
Location
Camden County, NJ
Car(s)
2017 Honda Civic Sport Hatchback FK7
Country flag
Isn't the thermoswitch does the job of when to turn on the fan and for the thermostat to regulate the flow of coolant?
 
OP

ayau

Senior Member
Joined
Aug 14, 2016
Messages
1,699
Reaction score
1,284
Location
USA
Car(s)
Subaru
Country flag
  • Thread starter
  • Thread Starter
  • #3
Isn't the thermoswitch does the job of when to turn on the fan and for the thermostat to regulate the flow of coolant?
It looks like they sell a low temp thermostat but does that also trigger when the fan turns on? I think the ECU setting is there to serve as a backup in case the switch fails?
 
OP

ayau

Senior Member
Joined
Aug 14, 2016
Messages
1,699
Reaction score
1,284
Location
USA
Car(s)
Subaru
Country flag
  • Thread starter
  • Thread Starter
  • #4
I feel like running the fans above let's say 40mph+ vehicle speed won't do anything to aid in cooling. And that it's really to aid in situations where the car is parked or moving below 20mph.
 

b2point0h

Senior Member
First Name
Brandon
Joined
Apr 8, 2019
Messages
309
Reaction score
341
Location
California
Car(s)
2019 Civic Type R, 2006 v8 4x4 4Runner, 2018 Forester XT
Country flag
In serious track situations, this wont help. Once the car gets heat soaked, you need to do a cool down lap regardless. The lower temp thermostat also won't help.

As identified by many already here, the only solution to help slow the heatsoak, and lower temps quickly are:

- Radiator
- Oil Cooler
- Vented hood
- Higher flowing grill

Edit: Also running heater on max.
 

jonnys_honda

Senior Member
First Name
Jonny
Joined
Mar 1, 2017
Messages
1,927
Reaction score
2,853
Location
Ossining, NY
Car(s)
2017 Civic Type R #1288
Vehicle Showcase
2
Country flag
In serious track situations, this wont help. Once the car gets heat soaked, you need to do a cool down lap regardless. The lower temp thermostat also won't help.

As identified by many already here, the only solution to help slow the heatsoak, and lower temps quickly are:

- Radiator
- Oil Cooler
- Vented hood
- Higher flowing grill

Edit: Also running heater on max.
Agreed on all points. I have all the cooling mods, during the end of my hotlap I shift early around 5k rpm. I immediately begin a cool down afterwards, otherwise 1/4 of the way into the second hotlap my temps rise to 250F+ (monitored via my oil temp gauge).
 

Lust

Senior Member
First Name
Michael
Joined
Apr 17, 2018
Messages
1,256
Reaction score
1,462
Location
Bay Area
Car(s)
2019 Champ White Type R
Country flag
In serious track situations, this wont help. Once the car gets heat soaked, you need to do a cool down lap regardless. The lower temp thermostat also won't help.

As identified by many already here, the only solution to help slow the heatsoak, and lower temps quickly are:

- Radiator
- Oil Cooler
- Vented hood
- Higher flowing grill

Edit: Also running heater on max.
I ran Thunderhill West in 100F+ ambient temps and didn't need to blast the heater to keep temps at bay. This is thanks to the C&R / PWR track rad. I did need to do a cool down half way through my 20 minute session. This is just good practice regardless to help prolong tires and brakes.

I still have some thermal headroom so to speak since I was running an overly large intercooler. The C&R IC should help with consistent IATs as well as reduce overall ECTs.
 

jonnys_honda

Senior Member
First Name
Jonny
Joined
Mar 1, 2017
Messages
1,927
Reaction score
2,853
Location
Ossining, NY
Car(s)
2017 Civic Type R #1288
Vehicle Showcase
2
Country flag
I ran Thunderhill West in 100F+ ambient temps and didn't need to blast the heater to keep temps at bay. This is thanks to the C&R / PWR track rad. I did need to do a cool down half way through my 20 minute session. This is just good practice regardless to help prolong tires and brakes.

I still have some thermal headroom so to speak since I was running an overly large intercooler. The C&R IC should help with consistent IATs as well as reduce overall ECTs.
What’s your track time for thunder hill?
 

jonnys_honda

Senior Member
First Name
Jonny
Joined
Mar 1, 2017
Messages
1,927
Reaction score
2,853
Location
Ossining, NY
Car(s)
2017 Civic Type R #1288
Vehicle Showcase
2
Country flag
1:28 with passenger on dead RS4 tires.
Got it. I don’t think you were going fast enough to overheat, no offense Specially with those tires.

I’ll just post these quotes from fast track guys:
1FEA6DEC-8D5A-4460-BF19-F29F05DF1C91.jpeg

And a reply from someone who got the race version of the radiator and t
351DF60B-DA6C-4732-A621-B197C37C0D4B.jpeg

415FF88D-9183-4E06-90EC-9653E176F8F5.jpeg


In conclusion, a radiator does not fix the issue.
 

Lust

Senior Member
First Name
Michael
Joined
Apr 17, 2018
Messages
1,256
Reaction score
1,462
Location
Bay Area
Car(s)
2019 Champ White Type R
Country flag
Got it. I don’t think you were going fast enough to overheat, no offense Specially with those tires.

I’ll just post these quotes from fast track guys:
1FEA6DEC-8D5A-4460-BF19-F29F05DF1C91.jpeg

And a reply from someone who got the race version of the radiator and t
351DF60B-DA6C-4732-A621-B197C37C0D4B.jpeg

415FF88D-9183-4E06-90EC-9653E176F8F5.jpeg


In conclusion, a radiator does not fix the issue.
LMFAO. Okay bud.
 

the8rotor

Banned
First Name
Kevin
Joined
Nov 9, 2017
Messages
253
Reaction score
234
Location
Texas
Car(s)
'17 Type R
Country flag
I ordered my C&R track radiator and FMIC from Cory just a bit ago. He sent me some information on the track and street radiator, along with their oil cooler that will be coming to market soon.

Their are too many factors that play in to overheating in our cars. Driver skill, mods, and ambient air temperatures to name the most obvious ones. We also know not one product is a cure all for overheating. I really believe a lot of the issues for overheating stem from engine modifications. I'm not saying a stock fk8 won't overheat... because they will. But, I believe the C&R track radiator is the best platform to build a more track reliable cooling system off of.
 

Lust

Senior Member
First Name
Michael
Joined
Apr 17, 2018
Messages
1,256
Reaction score
1,462
Location
Bay Area
Car(s)
2019 Champ White Type R
Country flag
I ordered my C&R track radiator and FMIC from Cory just a bit ago. He sent me some information on the track and street radiator, along with their oil cooler that will be coming to market soon.

Their are too many factors that play in to overheating in our cars. Driver skill, mods, and ambient air temperatures to name the most obvious ones. We also know not one product is a cure all for overheating. I really believe a lot of the issues for overheating stem from engine modifications. I'm not saying a stock fk8 won't overheat... because they will. But, I believe the C&R track radiator is the best platform to build a more track reliable cooling system off of.
My friend Will just sent in the HKS oil cooler for them to scan and to create a core upgrade for those that have the HKS kit already.

Forget trying to explain to this guy. Dude doesn't realize that Dave and Baxi are personal friends. Baxi who commented, "waiting on a couple of people to test" was in reference to Will and myself.
 

the8rotor

Banned
First Name
Kevin
Joined
Nov 9, 2017
Messages
253
Reaction score
234
Location
Texas
Car(s)
'17 Type R
Country flag
My friend Will just sent in the HKS oil cooler for them to scan and to create a core upgrade for those that have the HKS kit already.

Forget trying to explain to this guy. Dude doesn't realize that Dave and Baxi are personal friends. Baxi who commented, "waiting on a couple of people to test" was in reference to Will and myself.
Figured you had more to the story haha. I mean no offense, you aren't quick enough lol
 

b2point0h

Senior Member
First Name
Brandon
Joined
Apr 8, 2019
Messages
309
Reaction score
341
Location
California
Car(s)
2019 Civic Type R, 2006 v8 4x4 4Runner, 2018 Forester XT
Country flag
@Lust I was going to ask also what times you were running, and how hard were you pushing? 10/10ths?

Because you really need to be pushing hard, along with added power to get this car to overheat in the conditions we are talking about.

I ran Buttonwillow CW13 back in December with ambient temps around 70 (Unfortunately didn't datalog & didn't have my AIM SOLO yet), but in the first 9am session, I could only get 6 laps before a cool down. 2nd session got 8 laps before cool down, and i went into limp mode here. Lap time was a 2:05:191

Was pushing 9/10ths. Stock radiator, stock intercooler, high flow grill, Hondata OTS tune.
 

Advertisement






Advertisement
Top