Engine Oil Cooler, External or in the radiator?
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2004-2007 Cadillac CTS-V Performance Mods Discussion, Engine Oil Cooler, External or in the radiator? in Cadillac CTS-V Series Forum - 2004 - 2007; Which is more efficient at dispersing heat? Internal cooler in the bottom of a Ron Davis radiator or external cooler ...
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    yooper's Avatar
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    Engine Oil Cooler, External or in the radiator?

    Which is more efficient at dispersing heat? Internal cooler in the bottom of a Ron Davis radiator or external cooler such as Mocal or Setrab?

    Application is track days on road course and the Hot Rod Power Tour (which has a lot of bumper to bumper crawling into or out of each venue)

    Appreciate all responses as I have the radiator out now.

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    crankedupforit's Avatar
    crankedupforit is online now Cadillac Owners Connoisseur
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    Re: Engine Oil Cooler, External or in the radiator?

    PM V-Sam on his Ron Davis for an opinion.
    CTS V Redline 05 . MOTOR-- Katech LS6 stage II H&C, Kooks 1 3/4, FAST102 w Nick W 102 TB, Corsa, Lingenfelter CAI, Stealth intake tube, UUC shifter,UUC motor, trans and diff mount. Exedy GT04SD Twin Disk clutch . Mocal oil cooler BRAKES/SUSPENSION-- UUC 2 pc. rotors, Hotchkiss sways, KW V3s coil overs, MAP trailing arms, SW cradle bushings and BMR toe rods, corner weighed. Team Dynamics ProRace wheels, 275/35/18 GAC Hoosier (track). Allston Rollbar, Sparco seats and Schroth harnesses.

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    AAIIIC's Avatar
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    Re: Engine Oil Cooler, External or in the radiator?

    Quote Originally Posted by yooper View Post
    Which is more efficient at dispersing heat? Internal cooler in the bottom of a Ron Davis radiator or external cooler such as Mocal or Setrab?
    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.

    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.

    Quote Originally Posted by crankedupforit
    PM V-Sam on his Ron Davis for an opinion.
    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.
    '05 Stealth Grey CTS-V, Hyper Silver Linea Corse Venetos w/Continental ExtremeContact DWs (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...

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    UnsafeAtAnySpd's Avatar
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    Re: Engine Oil Cooler, External or in the radiator?

    I have the Ron Davis with built in oil cooler. I don't have the cooler lines hooked up, but really don't see how there is any room to actually hook it up ever. The ABS? control module is in the way.

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    cam3439 is offline Cadillac Owners Fanatic
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    Re: Engine Oil Cooler, External or in the radiator?

    Same problem here with the fittings for the oil cooler lines being directly in front of the ABS harness. I have emailed Bill at Ron Davis Radiators with detailed pictures and notes on the pictures. We will see what he says, but I asked multiple times if this was a direct fit that required no modification and he stated that it was.

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    Re: Engine Oil Cooler, External or in the radiator?

    ^Let me know what he says.

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    smbstyle is offline Cadillac Owners Fanatic
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    Re: Engine Oil Cooler, External or in the radiator?

    I am running a mocal oil cooler with a TPIS oil cooler adapter (I got rid of the Katech adapter b/c it was way too tall) and it works great. The entire setup wasnt too pricey either. definitely cheaper than a Ron Davis radiator! If I did it all over again I would probably use the Setrab cooler versus the Mocal cooler.

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    yooper's Avatar
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    Re: Engine Oil Cooler, External or in the radiator?

    Any success stories using engine oil cooler in any brand high flow radiator?

  10. #9
    crankedupforit's Avatar
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    Re: Engine Oil Cooler, External or in the radiator?

    Quote Originally Posted by AAIIIC View Post

    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.
    As am I. Didn't want to report it second hand since I have no experience with it.
    CTS V Redline 05 . MOTOR-- Katech LS6 stage II H&C, Kooks 1 3/4, FAST102 w Nick W 102 TB, Corsa, Lingenfelter CAI, Stealth intake tube, UUC shifter,UUC motor, trans and diff mount. Exedy GT04SD Twin Disk clutch . Mocal oil cooler BRAKES/SUSPENSION-- UUC 2 pc. rotors, Hotchkiss sways, KW V3s coil overs, MAP trailing arms, SW cradle bushings and BMR toe rods, corner weighed. Team Dynamics ProRace wheels, 275/35/18 GAC Hoosier (track). Allston Rollbar, Sparco seats and Schroth harnesses.

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