Project XJ = Cooling System
I received the radiator yesterday from the local 1-800-RADIATOR in Vancouver off of Fourth Plain. Their staff was friendly and knowledgeable, and knew just what I needed to convert the cooling system. First things first, the old cooling system needed to come out. On the pre-1993 XJ’s they are outfitted with a closed-loop cooling system, and this system doesn’t have a fill on the radiator. Instead the system uses a coolant reservoir to fill the system, and has a rather large heater control valve and a tangled mess of heater hoses. The new open-loop system uses a new radiator, used on post-’93 vehicles, and a much cleaner heater system. With the open-loop system it is a lot easier to eliminate pockets of air that could cause over heating. The new system also cleans the engine compartment tenfold with the new heater hoses. The new radiator bolted in place with no modifications needed, and the transmission lines hooked up like they should. I replaced the water pump, thermostat, heater control valve, radiator, and all the hoses. With all the new hoses all secured in place I filled the system with new anti-freeze…and with everything in the system new, I was a bit nervous firing up the engine, but it purred like a kitten. I was prepared to start troubleshooting leaks, but none came! With the first real test of the engine done, more nerves were settled and one more thing crossed off my list. I am closer than ever! Thanks again to the guys at 1-800-RADIATOR!


September 16th, 2007 at 7:09 pm
How high are are you going to lift this thing (I assume you’re gonna, because of the fender flairs)?
September 17th, 2007 at 8:26 am
I will be lifting the XJ a total of 5″ for now. Using the Skyjacker 3″ suspension lift, and then also using their 2″ Budget boost. The budget boost consists of urethane spacers up front and extended shakels in the rear. The main reason for the BB is the rear shackels. They are far superior to the oem units. They are greasable and are nearly bullet proof, or in our case rock proof. 5″ of suspension lift with the fender flares will give me more than enough clearance for my starter tires. A set of 265/75-16 from a 2006 Rubicon Limited. I will also be using the wheels. Pictures to come!