hjtrbo Bronze Donating Members 320 Member For: 13y 11m 27d 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 Share on other sites More sharing options...
El Andrew Gold Donating Members 2,036 Member For: 9y 8m 23d 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 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 320 Member For: 13y 11m 27d 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 Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 7m 15d 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 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 320 Member For: 13y 11m 27d 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 Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 7m 15d 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 Share on other sites More sharing options...
hjtrbo Bronze Donating Members 320 Member For: 13y 11m 27d 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 Share on other sites More sharing options...
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