Oil cooler

[DucatiThunder]

Originally Posted by Chicagowil

When Porsche added an external oil cooler to their cars back in the 70's, they were aware that the oil must reach a minimum temp to perform properly.

Those early trombone coolers were a joke. When they switched to the later carrera cooler in mid to late 80s they worked extremely well and needed a thermostat. Eventually the displacement reached the need for 2 carrera style coolers in the fenders in the 964/993. I have seen alot of oil bypass mods and thermostat mods allowing full flow but usually extra precautions were taken on oil selection.

[Chicagowil]

Originally Posted by DucatiThunder

Those early trombone coolers were a joke. When they switched to the later carrera cooler in mid to late 80s they worked extremely well and needed a thermostat. Eventually the displacement reached the need for 2 carrera style coolers in the fenders in the 964/993. I have seen alot of oil bypass mods and thermostat mods allowing full flow but usually extra precautions were taken on oil selection.

You are right. Most of the cooling was the heat exchange of the oil was in the lines from back to front and return again. As the motors got larger and the turbos appeared, heat exchangers for the oil cooling had to be added. The best of the lot was the Ruff front chin oil rad. But it still had a thermostat on it.

Thom