I did this with the existing hoses, just cut off the heat exchange valve with my hacksaw, leaving just enough of the lip to clamp the hose on the other side of. So far so good. Spent $0 on new hoses or heater valves. I just pulled the vacuum actuator off the valve and reattached to the vacuum line for a plug.
I don't understand why you reversed the hose positions using adapters. The factory installation for 1997 and later has the larger hose from the thermostat housing going to the top inlet of the heater core, and the smaller heater hose (bottom) going from the outlet of the heater core to the water pump. The heater core design was not changed between the 96 ,( equipped with heater control valve) 97, 98, 99, etc. years and uses the same heater core part number for those XJ's. The different sizing of the hoses has to do with the flow rate of the coolant through the system as designed by the manufacturer. I cannot see any reason to reverse these positions as any air trapped in the heater core will be pushed through the system and eliminated no matter which position the hoses are installed.
It isn't a factory thing from Jeep, but when AMC was a thing and this engine was used in AMC cars, it was often painted blue. So, when deciding what color to paint it, I chose blue.
@@WraithCommander42 dang dude it looks awesome! Thanks for getting back so quickly too! My HCV valve has an occasional drip at the moment but if it gets worse down the road i will defenitley do the delete. Thanks again mate cheers 👍
In earlier models the two cores (A/C and heat) are not properly isolated so you might lose some cooling power from the A/C. The valve is off in two settings, not just one as said in the video: power off or full cold. They obviously knew there was some problem having the two cores together and allowing hot coolant flowing close to the cold air. Some people report no noticeable differences in cooling power.
Yes, the heater control valve lets hot coolant run when the AC is on anyway. So this doesn't change that. The 97+ Jeeps didn't have a HCV, so this is just "modernizing" it.
The best video for this solution I've seen. Thank you.
Thanks for the video! Just did this today and heater works great now!!
Doing this to my rig thanks, saved me a lot of time
Great video , thanks brother this really helped out and it was perfectly explained!🤙🏽
I did this with the existing hoses, just cut off the heat exchange valve with my hacksaw, leaving just enough of the lip to clamp the hose on the other side of. So far so good. Spent $0 on new hoses or heater valves. I just pulled the vacuum actuator off the valve and reattached to the vacuum line for a plug.
Is that the whole plastic unit?
I don't understand why you reversed the hose positions using adapters. The factory installation for 1997 and later has the larger hose from the thermostat housing going to the top inlet of the heater core, and the smaller heater hose (bottom) going from the outlet of the heater core to the water pump. The heater core design was not changed between the 96 ,( equipped with heater control valve) 97, 98, 99, etc. years and uses the same heater core part number for those XJ's. The different sizing of the hoses has to do with the flow rate of the coolant through the system as designed by the manufacturer. I cannot see any reason to reverse these positions as any air trapped in the heater core will be pushed through the system and eliminated no matter which position the hoses are installed.
Yeah imma bring my whole truck inside and work on it
Good video man, good information
Thanks man good video
i got that but where does the hook up go from the collant res?
The coolant reservoir should not be involved in this conversion. But, it connects to the radiator just under the fill cap.
Thats cool your engine block is painted blue. Did they do that from the factory?
It isn't a factory thing from Jeep, but when AMC was a thing and this engine was used in AMC cars, it was often painted blue. So, when deciding what color to paint it, I chose blue.
@@WraithCommander42 dang dude it looks awesome! Thanks for getting back so quickly too!
My HCV valve has an occasional drip at the moment but if it gets worse down the road i will defenitley do the delete.
Thanks again mate cheers 👍
Will you still have cold a/c if you do this?
In earlier models the two cores (A/C and heat) are not properly isolated so you might lose some cooling power from the A/C. The valve is off in two settings, not just one as said in the video: power off or full cold. They obviously knew there was some problem having the two cores together and allowing hot coolant flowing close to the cold air.
Some people report no noticeable differences in cooling power.
will your ac still work like that???
Yes, the heater control valve lets hot coolant run when the AC is on anyway. So this doesn't change that. The 97+ Jeeps didn't have a HCV, so this is just "modernizing" it.
so if you run no hvc but don't need heat either do you even need to reapply the hoses?
You could run a hose in a loop from the output on the engine to the input on the engine.
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