Oil Cooler/s for RX-8 engine

What size oil cooler should I be looking at if we don't have the
standard one
and maybe some suggestions on which ones / brands might be the options

Anyone got some suggestions?

Thanks

Regards David

For a two hundred HP RX8 engine you will need something about 300 cubic inches.
Preferable about two inches thick or thinner. The best shape would be square or
about 12 inches high  by about 12 inches wide by about two inches thick.
Make sure it will withstand 150 psi minimum. Internal finning in the tubes
improves the heat transfer from the oil to the metal. Also lower weight
oils cool the engine better for the same reason. Use 10W fully synthetic or
lower in the engine while mixing two cycle oil with the fuel as it burns better.

Don't go on the manufactures engine HP recommendations as the rotary rejects
three times the oil heat. Most piston engines reject only 10% to cooling the oil while
the rotary rejects 30% or more. In other words as far as oil coolers are concerned
a 200 HP rotary requires a 600 HP piston engine oil cooler.

Setrab is a good international company.
http://www.setrab.com/index.php?id=68