Quote:
Originally Posted by RETed
For the record, my 1987 Turbo II with it's stock radiator has gone through Sac summers up to 115F and Vegas summers over 120F...
No problems.
This was back in 1999 - 2002, which makes the radiator 13 - 16 years old...original radiator...plastic end tanks and all.
Original stock viscous fan pulled...
Electric fan installed - 16" Spal single...
Turn on temps was set at 230F indicated on an SPI water temp gauge...
Turn off temps was set at 200F indicated on an SPI water temp gauge...
The car was making ~260hp at the wheels...obviously turbo'd motor.
-Ted
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Agreed. My turbo RX8 with stock radiator (had a PWR but never installed it) ran around 200F regularly, no issues at 8psi and 260whp with coolant temps. Oh - and it had an intercooler in front of the radiator heating up the air going into the radiator itself. So yea, must be a very inefficient system from the factory
For the record, I do run a Koyo radiator in my current RX8 for reasons other than cooling temperatures. These reasons include minor weight savings and most importantly, it can take minor impacts during an "off".. I run stock OEM fans with modified switch values to turn on a little earlier (182F) to help in paddock cooldowns.