cooling system. closed vs open
#1
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cooling system. closed vs open
I'm going to replace my leaky radiator today, along with the thermostat, water pump, hoses, etc. I'm thinking about adding an in line filler neck to the top radiator hose and going to an open type system and do away with that bottle and heater control valve.
Any advantages/disadvantages to this? Should I just keep the closed system? I'm not having any problems with it. I'm only replacing the radiator because it has a slight leak. The rest of the stuff is preventative.
Any advantages/disadvantages to this? Should I just keep the closed system? I'm not having any problems with it. I'm only replacing the radiator because it has a slight leak. The rest of the stuff is preventative.
#2
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Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
After three pressure bottles and numerous caps for the bottle I changed to open system . Have had no issue since doing this .
#4
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
The problem I have is that the replacement bottles for Renix don't last long at all. Yes, they have a lifetime warranty, but a lifespan of less than 2 years is nuts. I just noticed last Saturday that BOTH my Jeeps had cracks starting on the top of the bottles and were seeping.
#5
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Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
I bought a filler neck, and installed right next to the AC unit, that's the upper part of the cooling system, and allows the system to auto burp any bubbles that were trapped, bought an radiator auxiliary bottle from another car and installed where the RENIX OEM bottle was, no trouble at all since the installation
What I did not like about having a filler neck on the radiator, is that there are points higher than the radiator, therefore my thinking is that there will be always bubbles trapped in the upper hose! (sounds logical for me but do not know for sure)
anyway the filler neck I got was cheap, bought it from JEGS, and just cut the upper hose in the right spot and installed the new system! so happy and easy!
What I did not like about having a filler neck on the radiator, is that there are points higher than the radiator, therefore my thinking is that there will be always bubbles trapped in the upper hose! (sounds logical for me but do not know for sure)
anyway the filler neck I got was cheap, bought it from JEGS, and just cut the upper hose in the right spot and installed the new system! so happy and easy!
#6
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
I bought a filler neck, and installed right next to the AC unit, that's the upper part of the cooling system, and allows the system to auto burp any bubbles that were trapped, bought an radiator auxiliary bottle from another car and installed where the RENIX OEM bottle was, no trouble at all since the installation
What I did not like about having a filler neck on the radiator, is that there are points higher than the radiator, therefore my thinking is that there will be always bubbles trapped in the upper hose! (sounds logical for me but do not know for sure)
anyway the filler neck I got was cheap, bought it from JEGS, and just cut the upper hose in the right spot and installed the new system! so happy and easy!
What I did not like about having a filler neck on the radiator, is that there are points higher than the radiator, therefore my thinking is that there will be always bubbles trapped in the upper hose! (sounds logical for me but do not know for sure)
anyway the filler neck I got was cheap, bought it from JEGS, and just cut the upper hose in the right spot and installed the new system! so happy and easy!
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#8
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Year: 1993
Model: Cherokee
Engine: 4.0L
If you want to convert to an open system and have to replace the radiator anyway, it seems to me that it is a no-brainer to just get an open system rad and be done with it. A separate in line filler neck is just another something you have to install and a potential leakage point.
Air does not get trapped in a properly installed and functioning open system with the filler neck on the rad and the system self-burps any air.
You can do away with the HCV on either system.
Air does not get trapped in a properly installed and functioning open system with the filler neck on the rad and the system self-burps any air.
You can do away with the HCV on either system.
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