Doug,
The information you gave is very appropriate and timely. I hope you have asked Jerry for a copy of the article, as it may help if someone (like me) starts referring to it, and (here I go), in that article I am not able to find much, if any, reference to coolant under pressure or increased boiling point of coolant. I did look through what little information I had for that and realized my "burner" example was not an appropriate comparison, because what you said, the benefit of the pressure is to increase the boiling point of the coolant. Much of what is in the article raises some questions (to me) as to why some (or much) other information isn't in the article.
It also states that the use of an "optional" restrictor (optional in the sense that the use of a thermostat is HIGHLY recommended) is to relieve the pressure in the radiator because of the cap. It doesn't go on to mention other variables (such as radiator coolant flow) that is affected. And I was curious as to why they just didn't recommend using a higher pressure cap instead. Your information answers the question I was beginning to have: if the pressure in the block could be localized or separated from the radiator, as they were implying. From what you're telling me, it can't, since it's a closed system and flow in/out of the pump has to be equal.
I'm becoming more convinced that using a restrictor is an inexpensive way of increasing pressure as well as reducing flow in the entire system. The benefits are the raised coolant boiling point and the enhanced time for heat transfer in the entire system. If I'm not getting this out of your information Doug, maybe you could help re-paraphrase some things for me. Thanks. Tom #24014
The information you gave is very appropriate and timely. I hope you have asked Jerry for a copy of the article, as it may help if someone (like me) starts referring to it, and (here I go), in that article I am not able to find much, if any, reference to coolant under pressure or increased boiling point of coolant. I did look through what little information I had for that and realized my "burner" example was not an appropriate comparison, because what you said, the benefit of the pressure is to increase the boiling point of the coolant. Much of what is in the article raises some questions (to me) as to why some (or much) other information isn't in the article.
It also states that the use of an "optional" restrictor (optional in the sense that the use of a thermostat is HIGHLY recommended) is to relieve the pressure in the radiator because of the cap. It doesn't go on to mention other variables (such as radiator coolant flow) that is affected. And I was curious as to why they just didn't recommend using a higher pressure cap instead. Your information answers the question I was beginning to have: if the pressure in the block could be localized or separated from the radiator, as they were implying. From what you're telling me, it can't, since it's a closed system and flow in/out of the pump has to be equal.
I'm becoming more convinced that using a restrictor is an inexpensive way of increasing pressure as well as reducing flow in the entire system. The benefits are the raised coolant boiling point and the enhanced time for heat transfer in the entire system. If I'm not getting this out of your information Doug, maybe you could help re-paraphrase some things for me. Thanks. Tom #24014
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