Tburercomanche Posted July 14, 2016 Share Posted July 14, 2016 Bought this Comanche a few months ago is this the "open system''? if not what do I need to do to make it open. And is a 1row radiator enough to keep this 4.0 inline cool??? https://i.imgsafe.org/7e5346c480.jpg Link to comment Share on other sites More sharing options...
87MJTIM Posted July 14, 2016 Share Posted July 14, 2016 If your radiator has a cap like the one pictured, the PO converted to the open system. The closed system does not have a radiator cap. Instead, there is a pressure tank on the passenger side fire wall. Link to comment Share on other sites More sharing options...
Pete M Posted July 14, 2016 Share Posted July 14, 2016 sorta. I replaced the aging radiator in the 88 with one that had a cap, but I kept the old system. I did it out of laziness, but maybe my subconscious just wanted to confuse future owners :D Link to comment Share on other sites More sharing options...
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