Project DBA R35 Nissan GT-R, Keeping Limp Mode Away With More Cooling

We bolted the FV valves to the charge pipe and added the recirculation flange to the valve discharge.

The flange allows us to attach the valve to the stock recirculation hose.

The vacuum lines are hooked up to the stock port on the throttle body to complete our installation.

The stock GT-R oil cooler is pretty good. It has a pretty decent core and a large frontal area.  It also has good ducting to pick up air from the front bumper directly.   So of course we had to change it for something more efficient. In the case of the GT-R you can’t have too much cooling.

We started off by removing the stock oil cooler.  These bolt on fittings come off pretty easily.

The cooler is held to the chassis in rubber mounts by these four bolts.


  1. Mike, any need to upgrade the PS cooling loop? Our Z33 overheats the stock PS cooler and system with puny 255 Continentals on track days. The plan over winter is to install a large truck trans cooler in its place.

    1. The GT-R has the biggest power steering cooler of any Nissan I have seen so far. We haven’t heard of people having issues. I haven’t heard of a Z33 overheating the power steering on the track, autocross yes but not on a road course.

  2. I really like that BOV design. I think it’s time to retire the Greddy Type S I’ve had on my car for the past 10 years.

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