Has anyone tracked a non PP S650 GT yet?

[Junkyard Dog]

The S650 gets hotter.

The S650 has more horsepower than the S550. Horsepower produces BTU.

If you have a 2015, you had 435 horsepower. Even a base GT without active exhaust for the S650 is 480 horsepower. That is 45 more horsepower. My Darkhorse is 500, so that is 65 more horsepower. My Dark Horse stays cool on track, but it has an oil cooler and a larger radiator and a transmission cooler and a differential cooler.

Imagine taking my Dark Horse and adding 65 more horsepower. 565. It would probably need additional cooling.

Even the last year of S550 was 460 horsepower, and that is still 20 horsepower less than the base S650.

When you add horsepower, you add BTUs.

This is why nobody is tracking their Whippled Mustangs. They cannot keep the extra horsepower cool.

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[Junkyard Dog]

Wow thanks for sharing. Im not shocked given there is no auxiliary cooler, but thats very disappointing after only 3 laps. It seems the S650 definitely gets hotter quicker than the S550.

The good news is adding an auxiliary cooler can be done. Or if you really have the track bug you could trade up to a GT with the PP and get the extra cooling that way. The problem is I've heard story's of PP and DH cars getting hot on the track too.

This is just a function of horsepower, rpm, and no oil cooling.

Oil does not just cool off on its own. It has to shed the heat somewhere.

Ford Guy V8 is also not a newbie to the track. I can tell by what he added to the car for his HPDE day.

G-Loc R12/R10 brake pads, Brembo Package, Goodyear Supercar 3 tires.

Gripper brakes and stickier tires.

Which means he was able to push harder than he would have with the base brakes and OEM tires. That creates extra heat in the oil, too.

Install an oil cooler.

If I was starting from scratch, I would probably skip OEM options and go aftermarket, like the large Setrab oil cooler that the GT4 Dark Horse R cars use.

Scroll down to the 9 series.

http://setrab.us/products/oilcoolers/engine/index.html

I don't see the one that the GT4 cars are running today, but they have one rated to remove 69,000-96,000 BTU/hr. It might be a little bit of overkill, but the bit of extra capacity will be there if you upgrade the horsepower beyond what the stock Dark Horse oil cooler can handle.

 

[AZ_Ryan]

The S650 gets hotter.

The S650 has more horsepower than the S550. Horsepower produces BTU.

If you have a 2015, you had 435 horsepower. Even a base GT without active exhaust for the S650 is 480 horsepower. That is 45 more horsepower. My Darkhorse is 500, so that is 65 more horsepower. My Dark Horse stays cool on track, but it has an oil cooler and a larger radiator and a transmission cooler and a differential cooler.

Imagine taking my Dark Horse and adding 65 more horsepower. 565. It would probably need additional cooling.

Even the last year of S550 was 460 horsepower, and that is still 20 horsepower less than the base S650.

When you add horsepower, you add BTUs.

This is why nobody is tracking their Whippled Mustangs. They cannot keep the extra horsepower cool.

Its the compression silly. HP is only up 20 ponies from the gen 3 coyote.

 

[Junkyard Dog]

Its the compression silly. HP is only up 20 ponies from the gen 3 coyote.

Heat is only up 50,889 BTU per hour from the Gen 3 Coyote.

 

[Ford Guy V8]

Just some more background: My old GT was a 2018 with 460 HP. My new one has 486 because I have active exhaust. My old GT was also lowered with the same tires and pads so it was very quick on the track.

I will add, Autobahn Full is a long configuration with a lot of straights. 3.56 miles. That said, my old mustang could handle a 25 min session on Road America no problem.

I'm hoping to have kids next year so track days will likely be put on ice for a little while, but I appreciate the suggested mods. My next and last track day this year is at Putnam Park so I'm hoping a course with more flowing corners goes better.

 

[AZ_Ryan]

Just some more background: My old GT was a 2018 with 460 HP. My new one has 486 because I have active exhaust. My old GT was also lowered with the same tires and pads so it was very quick on the track.

I will add, Autobahn Full is a long configuration with a lot of straights. 3.56 miles. That said, my old mustang could handle a 25 min session on Road America no problem.

I'm hoping to have kids next year so track days will likely be put on ice for a little while, but I appreciate the suggested mods. My next and last track day this year is at Putnam Park so I'm hoping a course with more flowing corners goes better.

Oh that is a long course. Sounds like fun. Thanks for the added context.

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