Comments on: Subaru WRX Cooling System Upgrade

By: Maintenance Services - WRXtuners

Maintenance Services - WRXtuners — Wed, 26 Mar 2008 14:29:52 +0000

[...] all are useful. I won’t do oil or tranny changes as those should be easy enough. Coolant: Subaru WRX Cooling System Upgrade Spark Plugs Spark Plug Changing – Instructions – ScoobyMods Fuel Filter Fuel filter replacement – [...]

By: Jon

Jon — Tue, 22 Jan 2008 05:57:56 +0000

Great write up! I have upgraded my TS radiator to a WRX radiator. One thing about Subaru is the fan starts at only 95oC which could be a bit late. Also the thermostat opens at 80+oC and is partially opened even at 95oC.

I have replaced the original thermstat using an equivalent one used on a Renault. It opens very early at 70oC and is fully opened at hot. This enhance the water flow and provides better cooling.

The engine now runs much cooler , more stable and provides more torque even on a very hot day. If you are going to get your hands dirty, do consider replacing the thermostat.

By: VoltesV

VoltesV — Sun, 07 Oct 2007 16:05:23 +0000

Hey man great write-up! Good thing I found this before starting the same job this weekend. Looks like we have the same radiator (Fluidyne), what size bolts do I need to for this installation? I’m replacing my radiator with the Fluidyne since the stock one leaked.

NASIOC User Name: VoltesV

Thanks…..Ian