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Overheating Strategies (General)

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  • Joe C.
    Expired
    • August 31, 1999
    • 4598

    #16
    Re: Overheating Strategies (General)

    Chris:

    Well, I must be lucky if I can idle mine on a sunny 90 degree day, in my driveway, with the hood closed, for 50+ minutes (after op temp is reached), before it will actually boil over. I only did this once.......it was a one time only test. My car is a BLACK car, which compounds the heat loading, AND my driveway is blacktop.

    As I have been saying all along, this situation is normal, even with a healthy engine, tuned properly, new DeWitts, 50/50 mix, new hoses, rad cap, pump, fan clutch, etc. Turn off the a/c, open the windows, turn heater on and blower to "hi", shift to neutral and rev the engine slightly. Put an ice bag on your head.

    I remember many nightmares from the late fifties to mid seventies, about cars pulled over to the roadside in summer beach traffic to Jones Beach. This used to be quite common until the engineers started to over design the marginal cooling systems of pre emissions cars. Emission controls added more heat load, and so, forced the issue.

    One such war story comes to mind....some of you might enjoy it. In 1978, myself and 3 buddies embarked on a cross country oddysey in a '73 Dodge Maxivan (360 CID), which we picked up for $700.00. One of the crew had just had a broken nose reset, the week before. So here we are, somewhere between Boron CA and Badwater, in the heart of Death Valley, when the damn temp gauge starts climbing in the 115 degree heat. I remove the engine cover, open the windows, turn the heater on full high, and the temp stabilizes. My friend with the "nose" starts yelling with pain. I look across at him and I see a red bulbous mass where his nose was (is?). HA, HA, HA, HA, HA!!!!!!!!

    Comment

    • Joe C.
      Expired
      • August 31, 1999
      • 4598

      #17
      Re: Overheating Strategies (General)

      Chris:

      Well, I must be lucky if I can idle mine on a sunny 90 degree day, in my driveway, with the hood closed, for 50+ minutes (after op temp is reached), before it will actually boil over. I only did this once.......it was a one time only test. My car is a BLACK car, which compounds the heat loading, AND my driveway is blacktop.

      As I have been saying all along, this situation is normal, even with a healthy engine, tuned properly, new DeWitts, 50/50 mix, new hoses, rad cap, pump, fan clutch, etc. Turn off the a/c, open the windows, turn heater on and blower to "hi", shift to neutral and rev the engine slightly. Put an ice bag on your head.

      I remember many nightmares from the late fifties to mid seventies, about cars pulled over to the roadside in summer beach traffic to Jones Beach. This used to be quite common until the engineers started to over design the marginal cooling systems of pre emissions cars. Emission controls added more heat load, and so, forced the issue.

      One such war story comes to mind....some of you might enjoy it. In 1978, myself and 3 buddies embarked on a cross country oddysey in a '73 Dodge Maxivan (360 CID), which we picked up for $700.00. One of the crew had just had a broken nose reset, the week before. So here we are, somewhere between Boron CA and Badwater, in the heart of Death Valley, when the damn temp gauge starts climbing in the 115 degree heat. I remove the engine cover, open the windows, turn the heater on full high, and the temp stabilizes. My friend with the "nose" starts yelling with pain. I look across at him and I see a red bulbous mass where his nose was (is?). HA, HA, HA, HA, HA!!!!!!!!

      Comment

      • Doug Flaten

        #18
        Re: Overheating Strategies (General)

        I am not sure popping the hood does much either, at least on my C1. I removed the hood because I was painting it. Driving around in the summer, I saw my guage climb much higher than it normally did. I would have thought that it would run cooler with no hood since all of the unerhood heat could espape. No hood seemed to disrupt air flow through the radiator. Of course removing the hood and popping the hood may be totally different. Maybe in some cases, a popped hood allows some venting of underhood heat without disrupting radiator air flow.

        Comment

        • Doug Flaten

          #19
          Re: Overheating Strategies (General)

          I am not sure popping the hood does much either, at least on my C1. I removed the hood because I was painting it. Driving around in the summer, I saw my guage climb much higher than it normally did. I would have thought that it would run cooler with no hood since all of the unerhood heat could espape. No hood seemed to disrupt air flow through the radiator. Of course removing the hood and popping the hood may be totally different. Maybe in some cases, a popped hood allows some venting of underhood heat without disrupting radiator air flow.

          Comment

          • chris burbage

            #20
            Re: Overheating Strategies (General)

            Joe,

            Your point about Jones beach was telling. I used to frequent Long Island and the Jersey Shore in the late 60's and 70's. The sight of cars pulled over to the side with the hoods up and the families sitting on lawn chairs until things cooled down was real common. In fact I remember a time or two when I had to pull over with a big block 64 Pymouth to take the edge off and avoid a boil over.

            Sometimes I think we expect too much from these old cars and fail to remember that even when they were relatively new it was not unusual to have an occasional problem with overheating. Five hours of crawling along on the Garden State Parkway in 90 plus temps can be a test for any car.

            Comment

            • chris burbage

              #21
              Re: Overheating Strategies (General)

              Joe,

              Your point about Jones beach was telling. I used to frequent Long Island and the Jersey Shore in the late 60's and 70's. The sight of cars pulled over to the side with the hoods up and the families sitting on lawn chairs until things cooled down was real common. In fact I remember a time or two when I had to pull over with a big block 64 Pymouth to take the edge off and avoid a boil over.

              Sometimes I think we expect too much from these old cars and fail to remember that even when they were relatively new it was not unusual to have an occasional problem with overheating. Five hours of crawling along on the Garden State Parkway in 90 plus temps can be a test for any car.

              Comment

              • Jim T.
                Expired
                • March 1, 1993
                • 5351

                #22
                Re: Overheating Strategies (General)

                Warren I connected my vacuum advance directly to full time vacuum on my 70 about a month after I bought it new and it is still connected that way. Never had any overheating in traffic with the air on. The only time the temp guage has started to climb was when the thermostat failed. Another benefit of full time vacuum is better city gas milage. I saw an increse from about 11 to 14 mpg.

                Comment

                • Jim T.
                  Expired
                  • March 1, 1993
                  • 5351

                  #23
                  Re: Overheating Strategies (General)

                  Warren I connected my vacuum advance directly to full time vacuum on my 70 about a month after I bought it new and it is still connected that way. Never had any overheating in traffic with the air on. The only time the temp guage has started to climb was when the thermostat failed. Another benefit of full time vacuum is better city gas milage. I saw an increse from about 11 to 14 mpg.

                  Comment

                  • Tony Roussos

                    #24
                    Re: Overheating Strategies (General)

                    Hmmmm. Since these cars produce so much heat, and very few drive these regularly in the winter, wouldnit be 'cool'er to remove the thermostat altogether?

                    Tony

                    Comment

                    • Tony Roussos

                      #25
                      Re: Overheating Strategies (General)

                      Hmmmm. Since these cars produce so much heat, and very few drive these regularly in the winter, wouldnit be 'cool'er to remove the thermostat altogether?

                      Tony

                      Comment

                      • Robert C.
                        Expired
                        • December 1, 1993
                        • 1153

                        #26
                        Re: Overheating Strategies (General)

                        Tony, The theory is that if you remove the thermostat the coolent runs through the radiator so fast it doesn't have a chance to cool down!

                        Comment

                        • Robert C.
                          Expired
                          • December 1, 1993
                          • 1153

                          #27
                          Re: Overheating Strategies (General)

                          Tony, The theory is that if you remove the thermostat the coolent runs through the radiator so fast it doesn't have a chance to cool down!

                          Comment

                          • Terry M.
                            Beyond Control Poster
                            • September 30, 1980
                            • 15573

                            #28
                            Re: Overheating Strategies (General)

                            Bob,
                            In the early days of this board that theory was beat to death.

                            How does the fast flowing coolant have time to pick up heat from the engine, if it doesn't have time to give up heat in the radiator?
                            BTW: That is a rhetorical question.
                            Terry

                            Comment

                            • Terry M.
                              Beyond Control Poster
                              • September 30, 1980
                              • 15573

                              #29
                              Re: Overheating Strategies (General)

                              Bob,
                              In the early days of this board that theory was beat to death.

                              How does the fast flowing coolant have time to pick up heat from the engine, if it doesn't have time to give up heat in the radiator?
                              BTW: That is a rhetorical question.
                              Terry

                              Comment

                              • Tony Roussos

                                #30
                                Re: Overheating Strategies (General)

                                Ok.
                                But, doesn't it run too fast to get hot, too?

                                Comment

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