Re: Engine Oil Cooler, External or in the radiator?
The answer is pretty much "it depends". An oil-to-water cooler is more efficient because water/coolant is a better heat transfer agent than air - that's why the typical oil-to-water cooler is significantly smaller than a comparably rated oil-to-air cooler.
Originally Posted by yooper
However, if you've got a cooling system that's already pushing the limits, then adding the additional heat load of an oil-to-water cooler may push it over the edge so that your coolant temps are too high. I'll be honest, I've never paid any attention to my coolant temps on track - I bounce between checking oil temp, oil pressure, and tire pressures - so I don't know how our cooling system performs. But with a big aftermarket radiator (whether it be Ron Davis or Fluidyne or someone else) + better air flow (you're going with a vented hood with all the body work you're having done, right?) you may have more than enough cooling capacity to use an oil-to-water cooler.
Shouldn't be any need to PM him - he's posted before that he's had 3 Ron Davis radiators fail on him. I still find that very, very surprising based on the company's reputation, but that's been his experience.
Originally Posted by crankedupforit
'05 Stealth Grey CTS-V, 19x8.5/10" CCW T140s with Toyo Proxes T1 Sports (summer), black Team Dynamics ProRace 1.2 wheels with 275/35-18 R-compounds (track), Hyperblack Rota Torques (winter), KW Variant3s, V2 front brakes, Hotchkis rear sway bar, EPS cam, TEA-ported 243 heads, FAST92 intake w/LS2 TB, JBA Camaro/G8 1-3/4" shorty headers w/JBA cat pipes, Corsa exhaust, UUC motor and tranny mounts, UUC shifter, MAPerformance trailing arms, Specter cradle bushings, etc...