Tips from running a GTV6 3 TT in stop start traffic with outside temps sitting at 40 degrees Celsius versus my stock 2.5 GTV6.
Oom Div fitted a full aluminum radiator coupled to two GTA cooling fans. Problem I first encountered was the alternator could not provide enough Amperage so the battery would drain out and the fans would spin like their foreskins were glued together, result overheating. Throw in a thunderstorm requiring wipers and internal fans going and it rapidly went south.
Fix one, new Bosch Alternator from Goldwagen with a 90 AMP output. Step two the effing largest battery I could stick in the battery compartment at the back. Step three two sets of four relays each for the fans. Key wiring was replaced with small battery cable almost like a cheap jump start set and heat wrapped for good measure.
Now three hours of stop start traffic to cover a grand distance of 25kms in sweltering heat last Friday presents no problems. Temp gauge sits at just above the 80 mark.
The 2,5 get your rad cleaned and recored by Silverton. Replace your waterpump as often that is your biggest problem and you only really pick it up when it starts sounding like a washing machine trying to clean a bag of bolts on a speed cycle.
Get your hands on either GTA rad fans or the Kia fan Kevin has mentioned here before. Uprate your battery and get a new uprated alternator. Redo the key wiring bits and it should have no issue coping with the insane temps you get in Botswana.
I know MD is not a great believer but run the entire system on Castrol antifreeze with NO TAP water. I have seen on my own GTV6 what this excuse for water does inside the engine despite running a part mixture of Total Anti freeze and water.
Lastly try and get your hands on a aluminum expansion tank from Dawie DeVilliers at Glenwood, best investment compared to the plastic bottle.
Oh and replace your pipes as improving the whole system can very quickly expose the old rad pipes and they usually choose the worst time and place to go pop.
