DCT Overheating On Track?

MaximusB · 09-10-2023, 10:18 AM

I was at a track event yesterday where the afternoon temperature got up to 32C. I was doing 25 minute sessions. Engine temp got up to 137C as per data logger (Solo2 DL).

Towards the end of each afternoon sessions, I noticed the DCT would upshift quite aggressively where I got a harsh jolt. Downshift was also delayed, where a few times the car downshifted well after the braking zone, a good 1 to 2 second delay.

Power wise, my car is pretty much stock. Only intake and exhaust. But I do have coilovers, cf driveshaft and bbk. I'm also on 200tw tires.

Is this a symptom of overheating DCT or is it low on fluid? I didn't get any DCT overheat warning on the dash though.

Is it time to invest in cooling mods? Like oil and dct cooler?

ganz · 09-10-2023, 10:48 AM

Recommend a dct cooler at minimum. I ran a full do88 setup ("big pack") and the car never complained. The do88 dct cooler is nearly twice the size of the original.

Other things to try are the gts +1L banjo bolt and fill method and larger aluminum oil pan.

I personally never tried that as I didn't have overheating issues with the do88 kit.

do88 might run a black Friday promo so maybe hold out tilll November?

Good luck!

tsk94 · 09-10-2023, 11:53 AM

DCT cooler + upgraded pan would fix this.

09-10-2023, 10:18 AM	#1
MaximusB Major 1394 Rep 1,292 Posts Drives: 13 Frozen White E92 Join Date: Apr 2016 Location: Vancouver iTrader: (0)	DCT Overheating On Track? I was at a track event yesterday where the afternoon temperature got up to 32C. I was doing 25 minute sessions. Engine temp got up to 137C as per data logger (Solo2 DL). Towards the end of each afternoon sessions, I noticed the DCT would upshift quite aggressively where I got a harsh jolt. Downshift was also delayed, where a few times the car downshifted well after the braking zone, a good 1 to 2 second delay. Power wise, my car is pretty much stock. Only intake and exhaust. But I do have coilovers, cf driveshaft and bbk. I'm also on 200tw tires. Is this a symptom of overheating DCT or is it low on fluid? I didn't get any DCT overheat warning on the dash though. Is it time to invest in cooling mods? Like oil and dct cooler?
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09-10-2023, 10:48 AM	#2
ganz Private First Class 150 Rep 120 Posts Drives: 2013 E92 "Stripper" Join Date: May 2013 Location: San Diego, CA iTrader: (0)	Recommend a dct cooler at minimum. I ran a full do88 setup ("big pack") and the car never complained. The do88 dct cooler is nearly twice the size of the original. Other things to try are the gts +1L banjo bolt and fill method and larger aluminum oil pan. I personally never tried that as I didn't have overheating issues with the do88 kit. do88 might run a black Friday promo so maybe hold out tilll November? Good luck!
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09-10-2023, 11:53 AM	#3
tsk94 Lieutenant Colonel 1522 Rep 1,591 Posts Drives: E92 M3, E82 128i, F82 M4, E36 Join Date: May 2017 Location: Calgary iTrader: (2)	DCT cooler + upgraded pan would fix this.
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