I'm just trying to wrap my head around these cooling "upgrades" and how they relate to a track car that has an upgraded radiator and shrouding/sealing. I have a well-ducted CSF aluminum radiator that should be able to maintain 205F once the OEM T-stat is fully open.
1. Lower temperature Re-medy thermostat. A lower temperature thermostat can only start the flow of coolant sooner, it does not solve overheating issues once it is fully open. With enough radiator and ducting, this T-stat could reduce the steady state operating temperature on-track.
Q: Is it preferred and recommended to operate the renesis at a lower temperature for track driving, or is the OEM fully open temperature of 205F okay for engine power & longevity?
2. Earlier fan activation. For example, #1 fan now turns on at 190F (stock - 207F) and #2 fan turns on at 194F (stock - 214F).
Q: If you have the OEM t-stat, which opens at 180-203F, and you modify the fans to activate earlier, wouldn't #1 fan (190F) be frequently be running before the T-stat is even fully open (203F)? Or does the RX-8 look at the vehicle speed (VSS) and not run the fans when the car is moving above a certain speed?
For reference, according to the "Renesis Engine Tutorial" dated 2 Aug 2012 for the Star Mazda Racing series, posted somewhere on this forum:
Oil: 190-230F operating range, target of 200F and a terminal temp of 250F before the coolers.They quote a 30F rise in temperature through the engine, so keep in mind where you're measuring and adjust accordingly.
Water: 180-220F operating range with a terminal temp of 240F.
Thanks in advance.
1. Lower temperature Re-medy thermostat. A lower temperature thermostat can only start the flow of coolant sooner, it does not solve overheating issues once it is fully open. With enough radiator and ducting, this T-stat could reduce the steady state operating temperature on-track.
Q: Is it preferred and recommended to operate the renesis at a lower temperature for track driving, or is the OEM fully open temperature of 205F okay for engine power & longevity?
2. Earlier fan activation. For example, #1 fan now turns on at 190F (stock - 207F) and #2 fan turns on at 194F (stock - 214F).
Q: If you have the OEM t-stat, which opens at 180-203F, and you modify the fans to activate earlier, wouldn't #1 fan (190F) be frequently be running before the T-stat is even fully open (203F)? Or does the RX-8 look at the vehicle speed (VSS) and not run the fans when the car is moving above a certain speed?
For reference, according to the "Renesis Engine Tutorial" dated 2 Aug 2012 for the Star Mazda Racing series, posted somewhere on this forum:
Oil: 190-230F operating range, target of 200F and a terminal temp of 250F before the coolers.They quote a 30F rise in temperature through the engine, so keep in mind where you're measuring and adjust accordingly.
Water: 180-220F operating range with a terminal temp of 240F.
Thanks in advance.
Help me understand Re-medy thermostat and earlier fan activation for track cars...
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