Oil Coolers

[jondee86]

@raki
In this country the AE86 was sold without an oil cooler. AFAIK the factory
cooler was only fitted to cars shipped to countries with hot summers So
there is no problem in running the car without the factory bypass fitting.

@parrot
Makes good sense to mount the oil filter remotely if you are going to the
trouble of upgrading the cooler. They are not the easiest item to service
in the stock location !!!

I'm not certain why the factory installs a relief valve at the pump, but
would guess it is to protect the pump from excessive pressure/damage
when the oil is cold. The relief valve at the filter only opens at high rpm,
which is when the engine is working hard and generating more heat. A
simple way of only using the cooler when necessary.

Modified engines, stock engines used for racing, vehicles towing loads
or running in high ambient conditions, will all benefit from improved
cooling. In some cases this will include differential and transmission
coolers as well as oil coolers and larger radiators. Oil needs to be kept
within its design temperature/viscosity range to lubricate properly

Cheers... jondee86