Riddle me this C2 Cooling Problem - NCRS Discussion Boards

Riddle me this C2 Cooling Problem

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Thomas D.
    Very Frequent User
    • May 31, 1987
    • 120

    #31
    Re: Riddle me this C2 Cooling Problem

    I guess the old guys are on vacation or just too tired of answering cooling questions, so I'll jump in here. Steve, you stated new "aluminum four core". I'm going to guess that you went with an aftermarket brass/copper radiator. Later you said you it tested out, flushed out, flow tested, etc. This sounds like an old radiator. You need to explain exactly what type (material) and brand (company) the existing radiator is before anyone can (should) make recommendations.
    We all grew up hearing the term "four core" and since we didn't know anything about radiators, everyone keeps using the term. A "core" is the center section of the radiator that includes the "tubes" and fin and side channels. This is what you buy when a radiator shop "re-cores" a brass/copper radiator.
    The passage ways in the core are refered to as "tubes" or "rows". So if you have a copper radiator, the correct term is a four row. It's pretty easy to spot a replacement c/b radiator because it consists of a "core" and tanks on each end. Whereas the stock aluminum radiator has no end tanks, and the part number 3155316 is clearly stamped on the top. This radiator did not use "tubes" as it was made by stacking plates. The plates formed a passage way 3" wide and that's why the stock radiator works so well.
    You could purchase an aftermarket aluminum radiator built like the c/b design but no one makes more than a two row. These typically use two 1" tubes and even this design is a downgrade from the original specs.
    See the picture below. Is this what you have? If not, that's probably the problem.




    Attached Files

    Comment

    • Steve L.
      Expired
      • May 31, 2001
      • 34

      #32
      Re: Riddle me this C2 Cooling Problem

      This is a Dewitt radiator. Also the car has been running fine at 180 degrees prior to the road trip for the Power tour. The equipment has not been changed. We have cleaned, replaced a suspect hose, new water pump, tune up, new thermostat, three change outs of fluid. A new fan clutch.

      Nothing has returned the car to its original cooler running temp of 180.

      Comment

      • Steve L.
        Expired
        • May 31, 2001
        • 34

        #33
        Re: Riddle me this C2 Cooling Problem

        This is a Dewitt radiator. Also the car has been running fine at 180 degrees prior to the road trip for the Power tour. The equipment has not been changed. We have cleaned, replaced a suspect hose, new water pump, tune up, new thermostat, three change outs of fluid. A new fan clutch.

        Nothing has returned the car to its original cooler running temp of 180.

        Comment

        • Joe R.
          Extremely Frequent Poster
          • July 31, 1976
          • 4547

          #34
          Re: Riddle me this C2 Cooling Problem

          Steve,

          You have done everything you can and there's NO magic bullet that will make this thing run 180 degrees all the time. I am telling you that this is about normal for a midyear with AC. You can add an electric fan with thermostatic control and realize some additional cooling at low speeds and in traffic.

          Mid-year with AC don't run 180 in traffic unless it's 50-60 degrees outside with the AC on. It is a myth-plain and simple.

          Jegs lists quite a selection of cooling fans that will solve your problem and you can enjoy the Power Tour next year.

          Regards,

          JR

          Comment

          • Joe R.
            Extremely Frequent Poster
            • July 31, 1976
            • 4547

            #35
            Re: Riddle me this C2 Cooling Problem

            Steve,

            You have done everything you can and there's NO magic bullet that will make this thing run 180 degrees all the time. I am telling you that this is about normal for a midyear with AC. You can add an electric fan with thermostatic control and realize some additional cooling at low speeds and in traffic.

            Mid-year with AC don't run 180 in traffic unless it's 50-60 degrees outside with the AC on. It is a myth-plain and simple.

            Jegs lists quite a selection of cooling fans that will solve your problem and you can enjoy the Power Tour next year.

            Regards,

            JR

            Comment

            • Timothy B.
              Extremely Frequent Poster
              • April 30, 1983
              • 5177

              #36
              Re: Riddle me this C2 Cooling Problem

              Steve,

              I think you should check the heat riser valve for proper operation and no binding when opening and closing. I would also recheck the dwell and set the idle as low as it will go then set the initial timing at 12 degrees BTC. Let us know if this makes your car idle cooler. Timothy Barbieri

              Comment

              • Timothy B.
                Extremely Frequent Poster
                • April 30, 1983
                • 5177

                #37
                Re: Riddle me this C2 Cooling Problem

                Steve,

                I think you should check the heat riser valve for proper operation and no binding when opening and closing. I would also recheck the dwell and set the idle as low as it will go then set the initial timing at 12 degrees BTC. Let us know if this makes your car idle cooler. Timothy Barbieri

                Comment

                • Richard D.
                  Expired
                  • December 1, 2002
                  • 328

                  #38
                  Re: Riddle me this C2 Cooling Problem

                  Does 210 - 220 to 230 hurt anything?

                  I thought this was within acceptable range (for a short while - 10 -20 min.s anyway)?

                  Trying to keep temps right at the themostat open temps seems like it might not be ever possible.

                  As long as you're at the the boil under temp, should you be OK?

                  Rich

                  Comment

                  • Richard D.
                    Expired
                    • December 1, 2002
                    • 328

                    #39
                    Re: Riddle me this C2 Cooling Problem

                    Does 210 - 220 to 230 hurt anything?

                    I thought this was within acceptable range (for a short while - 10 -20 min.s anyway)?

                    Trying to keep temps right at the themostat open temps seems like it might not be ever possible.

                    As long as you're at the the boil under temp, should you be OK?

                    Rich

                    Comment

                    • Richard D.
                      Expired
                      • December 1, 2002
                      • 328

                      #40
                      Re: Riddle me this C2 Cooling Problem

                      One last thing, since I've been looking at an overheat prob. (distributor advance prob. from what I learned from Duke and others on the board) on my L79 68, is that the idle mixture has an effect on idle temps.

                      Rich

                      Comment

                      • Richard D.
                        Expired
                        • December 1, 2002
                        • 328

                        #41
                        Re: Riddle me this C2 Cooling Problem

                        One last thing, since I've been looking at an overheat prob. (distributor advance prob. from what I learned from Duke and others on the board) on my L79 68, is that the idle mixture has an effect on idle temps.

                        Rich

                        Comment

                        • John H.
                          Beyond Control Poster
                          • December 1, 1997
                          • 16513

                          #42
                          Re: Riddle me this C2 Cooling Problem

                          We still haven't heard what kind/type/style/brand/configuration of radiator you have - and that's important.

                          Comment

                          • John H.
                            Beyond Control Poster
                            • December 1, 1997
                            • 16513

                            #43
                            Re: Riddle me this C2 Cooling Problem

                            We still haven't heard what kind/type/style/brand/configuration of radiator you have - and that's important.

                            Comment

                            • Carolyn M.
                              Infrequent User
                              • November 1, 1998
                              • 3

                              #44
                              Re: Riddle me this C2 Cooling Problem

                              I successfully reduced my '65 396/425 running temp from 210-220 degrees to 180-190 degrees by a systematic approach of: switching my tstat from 180 to 160, changing the coolant ratio to 75% water to 25% antifreeze, and a bottle or two (I forget which) of Redline WaterWetter. My next step would have been to increase the radiator cap psi, but I didn't need to!

                              Comment

                              • Carolyn M.
                                Infrequent User
                                • November 1, 1998
                                • 3

                                #45
                                Re: Riddle me this C2 Cooling Problem

                                I successfully reduced my '65 396/425 running temp from 210-220 degrees to 180-190 degrees by a systematic approach of: switching my tstat from 180 to 160, changing the coolant ratio to 75% water to 25% antifreeze, and a bottle or two (I forget which) of Redline WaterWetter. My next step would have been to increase the radiator cap psi, but I didn't need to!

                                Comment

                                Working...

                                Debug Information

                                Searching...Please wait.
                                An unexpected error was returned: 'Your submission could not be processed because you have logged in since the previous page was loaded.

                                Please push the back button and reload the previous window.'
                                An unexpected error was returned: 'Your submission could not be processed because the token has expired.

                                Please push the back button and reload the previous window.'
                                An internal error has occurred and the module cannot be displayed.
                                There are no results that meet this criteria.
                                Search Result for "|||"