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

The OEM oil to water cooler is removed from the transmission and its mount.  The Greddy adaptor is bolted in its place and the OEM cooler attached to it.

Next, the transmission lines are attached to the cooler and the air to oil cooler lines are attached to the adaptor.

The braided lines are run to the hardlines in the driveshaft tunnel.

The couplers in the hardlines have nice o-ring seals.

The two sections of hardline are bolted together.

The hardlines are run the rest of the way to the front of the car. Note how clean the installation is. It looks factory.


  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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