FL5 Overheated on Track

[BigBird]

6-8 in 95* is impressive

yeah, it's why I don't totally subscribe to the FL5 overheating problem

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[siwelnosaj]

yeah, it's why I don't totally subscribe to the FL5 overheating problem

Well, there's enough evidence out there that there is an overheating problem, regardless of your success

 

[BigBird]

Well, there's enough evidence out there that there is an overheating problem, regardless of your success

maybe I was just lucky and a outlier, it's always possibility.

 

[siwelnosaj]

maybe I was just lucky and a outlier, it's always possibility.

Possible I would agree

 

[BuntaTypeR]

There are many factors contributing to the FL5's tendency to overheat, including the day's temperature, driving style, track conditions, and even airflow blockage from cars in front. In my experience, anything above 85°F has led to overheating, which I observed during testing at Willow Springs and Streets of Willow. I've even run my FL5 in 105°F weather. Now, my car has extensive modifications for cooling, some of which are custom and not available on the market. Since temperatures are dropping, I won’t be able to fully gauge the impact until summer returns, when I can properly test if the overheating issues are resolved.

 

[siwelnosaj]

There are many factors contributing to the FL5's tendency to overheat, including the day's temperature, driving style, track conditions, and even airflow blockage from cars in front. In my experience, anything above 85°F has led to overheating, which I observed during testing at Willow Springs and Streets of Willow. I've even run my FL5 in 105°F weather. Now, my car has extensive modifications for cooling, some of which are custom and not available on the market. Since temperatures are dropping, I won’t be able to fully gauge the impact until summer returns, when I can properly test if the overheating issues are resolved.

I'm wondering if you'd be willing to share your cooling modifications?

 

[siwelnosaj]

Stock radiator

Those are very hot temperatures (123c/253f water and 144c/291f oil), and the whole run was only about 4 minutes. Also you can't see the ambient temperature on the gauges, it would be helpful to know what it was.

 

[Rhorn]

So as a someone who is new, what oil temperatures should I start to pull back snd go slow when on the track?

I was planning on slowing down whenever I see anything over 280

For reference I have Amsoil 5W-30

 

[BigBird]

So as a someone who is new, what oil temperatures should I start to pull back snd go slow when on the track?

I was planning on slowing down whenever I see anything over 280

For reference I have Amsoil 5W-30

oil temps are calculated and changing from the stock 0W-20 changes the calculations even further.

I believe the actual temps once warmed up are about 20 degrees lower than it says on the dash from those that have use an actual sensor.

 

[siwelnosaj]

So as a someone who is new, what oil temperatures should I start to pull back snd go slow when on the track?

I was planning on slowing down whenever I see anything over 280

For reference I have Amsoil 5W-30

When the oil temps go up so too will the water temps. For me I'm using 240 water as my upper limit. I'm going to adjust the settings so this read out turns yellow at 230 as a warning to myself I'm getting close.

 

[keller]

I ran time attack in 95F tuned and no over heating. Yes with no intercooler the IATs spike, but never limp mode, except when I was low on fuel.

Tezza says the same thing about his car, it's indeed curious. What water temps are you seeing?

 

[keller]

New intake concept. Trying to do my own version of the spoon fk8 intake cover.

Next step is a MAF-less tune and an intake duct on the other side of the car, just like the TCRs. Then you can have the whole hood vent open!

 

[Rhorn]

When the oil temps go up so to will the water temps. For me I'm using 240 water as my upper limit. I'm going to adjust the settings so this read out turns yellow at 230 as a warning to myself I'm getting close.

So does the water temp reading give you a more accurate picture of whats going on than the oil temperature?

 

[Tougefl5]

Why not just get a oil temp gage instead of going by the water temp. I don't think it's that accurate anyway lol

 

[siwelnosaj]

So does the water temp reading give you a more accurate picture of whats going on than the oil temperature?

That's a fair question. I guess I would just say I'm more worried if coolant gets too hot for the sake of the head and head gasket.

If the oil were to be in the very high 200s or get over 300 that would be a sign to me to pull off, but I suspect the coolant would very likely also be past the threshold I want at that point

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