EfiniX
Well-known member
I worked with Evan (EHMotorsports) to get a new radiator into my car after the stock radiator decided that sealing at the lower plastic end-tank was just not part of the program any longer. I went with a scirocco radiator because they have a proven record with the 4g63, and they also provide much more clearance between the radiator and the turbo bits. In fact, my stock radiator had a few dents in it from the waste gate actuator from clearance issues in the past when the turbo (T3-T04) needed to get pulled out for some exhaust work.
We initially started with a single puller fan in the stock location, and Evan knocked me up a full shroud. Coolant temps proved too high on warm days, so we added more flaps to the shroud and an additional pusher fan on the other side of the radiator from the puller fan. This still had some challenges on hot days in traffic, although cruising temps were much better. Ultimately we kept the housing he built, but pulled the shroud off the back, allowing for unobstructed flow from front to rear. This did the trick, with the motor running cooler and under-hood temps lowering as well.
click
This video shows me poking around with an IR thermometer immediately after shutting down the car on a warm day after rush-hour traffic. I'm particularly pleased with the surface temps on my IC piping and TB elbow. I have other videos on my channel that show temp probes, and since my initial checks, the TB elbow temps have dropped around 30F!
We initially started with a single puller fan in the stock location, and Evan knocked me up a full shroud. Coolant temps proved too high on warm days, so we added more flaps to the shroud and an additional pusher fan on the other side of the radiator from the puller fan. This still had some challenges on hot days in traffic, although cruising temps were much better. Ultimately we kept the housing he built, but pulled the shroud off the back, allowing for unobstructed flow from front to rear. This did the trick, with the motor running cooler and under-hood temps lowering as well.
click
This video shows me poking around with an IR thermometer immediately after shutting down the car on a warm day after rush-hour traffic. I'm particularly pleased with the surface temps on my IC piping and TB elbow. I have other videos on my channel that show temp probes, and since my initial checks, the TB elbow temps have dropped around 30F!
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