Chrome oil cooler myth or correct
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Chrome oil cooler myth or correct

  1. #1
    Senior Member PLACECRAFT20's Avatar
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    Default Chrome oil cooler myth or correct

    I am going to purchase a new oil coller for a 650hp to 700hp whipple charged engine. I have looked at the hardin marine 3" units with the power steering included and the Eddie marine unit that is the same but chrome. Hardin Marine claims that a chrome cooler does not work as well. What do you guys think?

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    21 Daytona Outlaw's Avatar
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    I think they are FULL OF CHIT. as long as its not chromed on the inside
    I cant see where it would make any difference.
    I asked the same question a few months ago.

    http://www.performanceboats.com//showthread.php?t=20721
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    Senior Member PLACECRAFT20's Avatar
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    I just read that thread Outlaw, thanks alot. Did you call Eddie Marine to see if it was chrome inside. I think I am calling bullshit and ordering one but, I will ask them.

    One more from the Hotboat forums. I guess I answered my own question. I am buying the damn thing. http://www.hotboat.com/forums/showth...ome+oil+cooler
    Last edited by PLACECRAFT20; 01-13-2009 at 01:14 PM.

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    gn7
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    Quote Originally Posted by PLACECRAFT20 View Post
    I just read that thread Outlaw, thanks alot. Did you call Eddie Marine to see if it was chrome inside. I think I am calling bullshit and ordering one but, I will ask them.

    One more from the Hotboat forums. I guess I answered my own question. I am buying the damn thing. http://www.hotboat.com/forums/showth...ome+oil+cooler
    Chroming the inside of an oil cooler would be a major task, and could never happen by accident. You could copper plate the inside relativly easy, but that doesn't hurt the performance, it's copper tube anyways. Besides that, materials are to expensive to let that happen. Any chrome shop would plug the openings in the cooler before putting it in the tank. It's just to easy. Chrome on the outside doesn't do anything except bling!



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    Senior Member earlbrown's Avatar
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    It's been proven that a flat black will radiate more heat than chrome.....



    .....but I have a sinking feeling that the oil cooler does most of it's cooling with conduction to the water flow.
    Last edited by earlbrown; 01-14-2009 at 09:40 AM.

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    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Actually, a shiny (especially chrome) surface does not radiate heat as efficiently as a flat, dark-color surface (especially flat black).

    Where this applies to a water-cooled oil cooler, is that it doesn't.
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    cfm
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    Yes, and it's been proven many times over that routing the oil lines so that it flows reverse of the water (oil in to the water out section) in the cooler works to remove more oil heat.

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    Hondo Jet blown540's Avatar
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    Quote Originally Posted by cfm View Post
    Yes, and it's been proven many times over that routing the oil lines so that it flows reverse of the water (oil in to the water out section) in the cooler works to remove more oil heat.
    You guys are friggin hilarious! I heard that you only want -6 oil lines to the cooler, that way it slows the oil down and cools it better

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    cfm
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    What's so hilarious ? All the I/O guys - mentioning them because they have to run oil coolers and this (what you quoted me saying) is what happens. Their oil coolers are typically in the 18-22" long by 3" diameter range. They are plumbed in the cold water supply going to the motor. Not uncommon for someone with a little too high oil temp to find they swapped the oil line routing to/from the oil cooler by mistake to run in same direction thru the cooler as the water. After switching to same way the OEM's do it (oil runs opposite direction water does thru cooler) they'll see oil temps reduce some.

    With these motors, all the oil goes to the cooler before it's reintered into the engine's oil galleys, therefore most will use minimum of -10. Some use -12 just because.

    Yes, you'd think with the shear volume of water these systems pump that the direction wouldn't really matter, but it does, as the proof is in the pudding....so to speak.

    Maybe you use a different oil cooler system for the needs and type of driving you do - dunno ? But what I mentioned is no BS. Sorry if you took it that way as I try not to BS when not stating I'm BS'ng so it won't screw people up.

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    Fluid direction does make a temp difference in a heat exchanger.

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    Quote Originally Posted by Warp Speed View Post
    Fluid direction does make a temp difference in a heat exchanger.
    Oh what the hell do you know ???

    A slight difference or something over 5% ?

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    CarbGuy RumRunner's Avatar
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    It would be interesting to do a back to back endurance test to see if the chrome unit held in more heat than the non-chromed unit. If any heat is radiant to the engine compartment then it would make sense that the chromed unit could maintain at a slightly higher temperature.

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    steelcomp was here
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    Quote Originally Posted by RumRunner View Post
    It would be interesting to do a back to back endurance test to see if the chrome unit held in more heat than the non-chromed unit. If any heat is radiant to the engine compartment then it would make sense that the chromed unit could maintain at a slightly higher temperature.
    This is my thought. The majority of heat exchange is internal, but there has to be an element of heat dissipation through the outer housing. Chrome it, and you insulate the the cooler's outside surface, and greatly reduce any heat dissipation there. It may not be significant, but I'm sure it reduces the effectiveness of the cooler to some degree.
    Do any of these coolers run thermostats for the oil?
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    Steel, I think you hit it on th head. The chrome MAY reduce the effectiveness by A degree. I've never compaired the two, but I don't think the chrome on the out side is going to make enough difference to worry about. JMHO

    Tim

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