BEST RADIATOR OPTION

Heating, Cooling & AC

  1. DDR2467

    DDR2467 Member

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    TY Gerald - guess I was just looking for the reasssurance that a little modification in a case like this was “acceptable”. Any input on the overflow container I have pictured? What’s everyone else with my set up using/doing?
     
  2. Gerald Morris

    Gerald Morris Senior Member

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    That overflow bottle should be FINE! I use a 1 liter plastic bottle w a 1" lid, which I bored two holes in. One takes the 3/8" poly tube from the radiator overflow, with the other venting to the ground if its needed. Yours should work VERY well. One thing: Don't rely on your overflow bottle to fill the radiator with coolant. Fill the radiator directly, then allow it to "puke" into the overflow if it must. The FSM clearly instructs us to keep the coolant level WELL below the top of the tank anyhow. Look:

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    So, do as they instruct and make sure you keep the coolant level at 1.25" below the bottom side of the filler neck. That gives your coolant room to breath in the upper tank, and COOL more efficiently. THIS is WHY you shouldn't rely on an overflow bottle to maintain the correct level in your radiator as a filling port. It WILL do its job once you have it properly filled though. Vaccum will draw the coolant back from the overflow bottle once the engine cools down to ambient temperature. Ethylene glycol is FAR more ELASTIC that pure water. That's to your benefit in several ways, except for mixing high-balls. Note how the FSM instructions I pasted in above tell you to check the coolant level again once the engine is up to temperature. THIS is when you want to set the coolant level: when the stuff is at ~190 F. Be SURE your cap is good for 16 PSI also. This prevents boiling.
     
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  3. RagTop66

    RagTop66 Member

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    I have the same radiator in my 66 Polara with a 440. Even when the temps hit around 100 this summer, I had no problems. The only time it even moved slightly past 190, was when I got stuck in a drive through and the outside temp was 100. As soon as I got moving, it was back down to 190. FFW, I paid around $230 for it and I’ve been extremely happy. It’s been in my car for about 5 years now and no issues.
     
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  4. Ccas

    Ccas Member FCBO Vendor

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    Pretty much one! :) We made the MOP757A 26" C body unit because you guys sent us a radiator to copy. We've been asking for a 22" C-body sample for a pattern.
     
  5. 1970cat

    1970cat Senior Member FCBO Gold Member

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    that's why i suggested re-coring yours. 22" radiators are tough to find. the setup you have will work fine. just make sure your fan is centered in the shroud and you'll be good.
     
  6. DDR2467

    DDR2467 Member

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    The fan was a bit towards the bottom of the shroud so I remove the radiator (for the 43rd time) and put the shroud on my spindle sander to remove some of the bottom part of the plastic to prevent the fan blades from making contact with it. Now, it’s “perfect”!

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  7. Gerald Morris

    Gerald Morris Senior Member

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    Oh Kaaaay. I can send you all my treasured 1965 2924984 if nobody else has one. Will take this up in PM and email. This one has become rather RARE, though I've seen references to it over the past few years, here and there. They're still sought after....