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How to convert closed system to open system?

kcclark

NAXJA Forum User
Location
N.C
I have an 86 xj with a closed system radiator I have an open radiator what is the best way to convert the system
 
All I did was replace the radiator and get a heater control valve from an open system. All I had to do was make all the hoses fit.
 
If you've got a radiator with a cap on it, just eliminate the plastic surge tank by plumbing directly to the heater core. You can either ditch the heater control valve or replace it. There is a neglible difference without the valve and it'll help keep the heater core from plugging up as bad. You'll need some sort of overflow bottle.
 
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