Need second opinion on AC condenser to radiator placement on a '65

Discussion in 'Classic Mustang Specific Tech' started by Cannoball888, Jun 30, 2006.


  1. Cannoball888

    Cannoball888 New Member

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    Need second opinion on AC condenser to radiator spacing on a '65

    Today I was making custom fan brackets and removing the bottom radiator support on my '65 to fit a fat Griffin radiator. I was thinking about what the guy at Griffin told me. He told me that the radiator will cool better if I move my AC condenser right up against it. This makes absolutely no sense to me, and when asked he couldn't explain the reasoning behind this advice he said he just knows it works better. But I know for a fact that more air is drawn through the radiator if the condenser isn't right up against it blocking it. Anyone think he's right, and if so why?
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  2. Tim65GT

    Tim65GT Active Member

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    I added the Vintage Air kit with the brackets that came with it and it had overheating issues. I removed the condenser brackets and bent them so it mounted about a inch and a half more away from it.

    It now doesn't overheat, but it still gets hot. Once it starts clinbing past 210, it won't drop unless I turn the AC off. A bigger aluminum radiator is in my future. Of course my AC is probably less efficient now, but it blows cool pretty damn good anyway (yes it is R134)

    Your right, what he said doesn't make sense. The more room between them, the more flow of air to the radiator that hasn't been "preheated" by the condenser.

    There might be a more scientific reason for what he says, like maybe the air flows smoother or faster through them as one unit.:shrug:
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  3. xoxbxfx

    xoxbxfx Founding Member

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    i was thinking its because air would cavitate between the 2 whereas if they were together, it would act as one
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  4. fastdave

    fastdave New Member

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    I was told the same thing. Something about some of the air will go around the condenser not through it resulting in less heat transfer in the a/c condenser. Be carefull about getting a fatter radiator because it reduces some of the air flow through the radiator. less air flow,more of a chance of getting hot. Look at ANY brand newer car. The A/C condenser is very close (1/4") to the radiator. Also the radiator is thin and wide. This is why I am going to modify my opening to fit a wider radiator that is alumminum,and 2-1" rows and a cross flow w/ electric fan(s). Ever wonder why the smaller (narrow) radiator was only on 65 & 66 mustangs? Also they usually had overheating issues. (not always tho). In 67 they changed it to a wider one. wa-laaa! No more overheating issues. At least that is what my little mind thinks.
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  5. Cannoball888

    Cannoball888 New Member

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    The Griffin guy was talking about the radiator cooling better if the AC condenser were closer to it, not the AC condenser cooling better. Anyhow, I guess if my car still overheats, I'll try his advice.
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  6. reenmachine

    reenmachine Active Member

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    The condenser should be as close as possible to the radiator. If it's spaced too far away, the air flow becomes turbulent between the two and the efficiency of the radiator is reduced. Warm air flowing cleanly through the radiator removes more heat than cooler air that's turbulent. If you're overheating you don't have enough radiator or somethng else is wrong.
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  7. Cannoball888

    Cannoball888 New Member

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    I just found a post on another forum that this is correct and the explanation is, as reenmachine wrote, to reduce turbulence. So, Griffin guy was correct after all. Therefore, the AC condenser should be mounted as close as possible without touching (only because touching will cause rubbing).

    Here is the other post I found with a detailed explanation if anyone is interested in reading it:

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  8. 95 cobra clone

    95 cobra clone New Member

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    well can anyone tell me why my 96 mustang with 5.0 heats up whil driving 85-90 mph.the bottom radiator hose isn't squeezing cause it has a spring in it,the condenser was removed because it wasn't letting enough air threw while sitting in traffic and it was clogged up with bugs so once I fixed that problem by removing the condenser its starting to heat up while driving at high speeds .I bought new radiator and twin fans with aluminum fran strod new water pump plus the system was flushed before installing new parts.I kind of think my problem is with the condenser removed and me running high speeds like that,the wind comming threw the radiator is stopping the fans from spenning properly so I'm going to purchase a new condenser.
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