Oil Cooler

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Larger Oil Cooler

  • Airflow Systems 2007X Oil Cooler
  • Spacers and bolts (consider using there, not sure if they are absolutely needed)
    Note: the kit contains three longer bolts for the upper holes (use thick washers) and three slightly shorter bolts for the lower holes (use thin washers).
  • The larger oil cooler is taller. Add an angle bracket to the top for the top line of holes. Enlarge the cut-out of the Van's oil cooler bracket to utilize the topmost part of the oil cooler.
  • The upper forward flange needs to be trimmed to the inside of the most inner hole for the engine mount.
  • The bottom outside hole needs to be fastened with a short AN3-4 bolt as a long bolt will not pass the engine mount.
  • See also Ryan's video (Note: if you install a turning vane, leave enough room between the vane and the firewall so you are not restricting the air-flow to the lower half of the oil cooler. Also, vanes should have their surface parallel to the incoming and the outgoing air-flow and the bend should be smooth / rounded.)
  • Airflow Systems has two documents relating to the installation (not available here, check their web site or email them):
    • RV-10-2007X-Install-Rev-A.pdf (how to install the larger oil cooler)
    • Turning-Vane-Installation-inst.pdf (how to install a turning vane that splits the air-flow in half and directs it to the upper/lower half of the oil cooler independently)

Damper

The engine-side oil temperature thermostat (vernatherm) opens at some 170F (measured at the port towards the oil cooler). At high altitude or in winter months, the oil cooler may cool down the oil too much (e.g. to 140F). Consider installing a damper that controls the air flow into the oil cooler. As a side effect, the cylinder heads get more cooling if the damper is restricting the flow through the oil cooler.

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