hjtrbo Bronze Donating Members 328 Member For: 14y 3m 29d Posted 07/01/22 02:42 AM Share Posted 07/01/22 02:42 AM Hey, anyone see any issues with this set up? Thinking it will keep a stable 80 to 95degC no matter what the weather and have quick warm up time... Link to comment https://www.fordxr6turbo.com/forum/topic/96566-trans-cooler-thermal-bypass/ Share on other sites More sharing options...
El Andrew Gold Donating Members 2,039 Member For: 10y 26d Gender: Male Location: Canberra ACT Posted 07/01/22 03:04 AM Share Posted 07/01/22 03:04 AM Is it a ZF?If so, I'd bypass the factory heat exchanger altogether. They warm up pretty quick and remember these things went into cars operating in extreme sub zero temperatures. That way you won't risk a milkshake. Saves you mucking around with the thermal bypass too. I put a fan with a thermo switch and manual ovveride on my external cooler. To be honest though it probably doesn't need the fan unless you are tracking the car. I think my thermo switch has died and I only use the manual switch if it's getting a serious flogging through the twisty stuff . Link to comment https://www.fordxr6turbo.com/forum/topic/96566-trans-cooler-thermal-bypass/#findComment-1710025 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 328 Member For: 14y 3m 29d Posted 07/01/22 03:18 AM Author Share Posted 07/01/22 03:18 AM Yeah its a ZF. Just looking at some data logs going back to winter. I currently have the HX bypassed and am running straight to the external cooler which is mounted down the back (ute). In winter trans temp never exceeds 65°C. Summer temps are good at around 70-95°C. So what I'm looking to achieve is a narrower range of temperature all year round. Ideally 82 to 92°C based on the switch points of the cooler bypass valve and fan thermostat plus some hysteresis and dead time. How about this... Link to comment https://www.fordxr6turbo.com/forum/topic/96566-trans-cooler-thermal-bypass/#findComment-1710026 Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 11m 17d Gender: Male Location: Adelaide Posted 07/01/22 06:16 AM Share Posted 07/01/22 06:16 AM That’s how I would do it if you’re concerned about warm up time and maintaining a narrow band of temp, All of which isn’t necessary unless you’re in extreme negative temp areas. If your coldest mornings are 0* without major snow/frost the ZF will warm the fluid at an acceptable rate per minute as the fluid will always maintain around 10* above ambient when as low as 0* ( so starting point 10* oil T ) Link to comment https://www.fordxr6turbo.com/forum/topic/96566-trans-cooler-thermal-bypass/#findComment-1710035 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 328 Member For: 14y 3m 29d Posted 07/01/22 06:22 AM Author Share Posted 07/01/22 06:22 AM (edited) Hey @JETURBO what I was finding in winter the trans wouldn't adapt when I made changes to shift pressures unless I cained the f@ck out of it and got it hot. The purpose of this mod is to keep it in what I think is an 'adapt temp enable zone'. Cheers. Edited 07/01/22 06:23 AM by hjtrbo Link to comment https://www.fordxr6turbo.com/forum/topic/96566-trans-cooler-thermal-bypass/#findComment-1710037 Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 11m 17d Gender: Male Location: Adelaide Posted 07/01/22 08:06 AM Share Posted 07/01/22 08:06 AM Then your justification makes sense mate, go for it 1 Link to comment https://www.fordxr6turbo.com/forum/topic/96566-trans-cooler-thermal-bypass/#findComment-1710041 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 328 Member For: 14y 3m 29d Posted 17/12/22 10:18 PM Author Share Posted 17/12/22 10:18 PM Only posting to complete the thread. Job done and objective achieved. Link to comment https://www.fordxr6turbo.com/forum/topic/96566-trans-cooler-thermal-bypass/#findComment-1716339 Share on other sites More sharing options...
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