Howdy folks, i have a cherokee larado 88 straight 6 and i am trying to find out wut radiator i need to change from a closed system to an open one....i am or was having some issue with the coolant system over heating and it was said 'that's because the radiation system is a closed circuit and to avoid all that just change it to open curcuit...!' so i would like to learn how and or what type of radiator do i need to get i am not to mechanically inclined but **** this forum and my beast are maken me suuuuuper aware of how to fix **** quick cheap and by my self....thanks..!!!

 

Im almost thinking it means your thermastat is closed..... Try changing that see if that works. I may be wrong, but Im just a girl what do I know.....

 

if you are having issues with overheating, replace your tstat, and flush the cooling system. you might even replace the water pump. also make sure fans are working.

 

you can change to a open loop system if you want but the closed system will do just fine if redone in stock form... from the way you sound id say just go back with the factory system...

 

see i got a new water pump and i have a changed the cap on the reseve tank but i hear that an open system is better to deal with than a closed i had issues with it heating way over but its fine after i got the cap changed...i still have my doubts and wanna change it or just make it better...!

 

The primary weak point with the closed system is the pressure bottle. Ours are ****ing trash. If you get a better quality pressure bottle and cap, it will function just as well as an open system. I'll be converting mine, but that's cause I'm replacing most of it anyway.

 

^ yep... napa sells the whole bottle but mine swelled right up on the first start... there is a aftermarket stainless steel one you can buy made for the renix cherokees... i cant remember who makes it though... i swapped mine like ^him^ but i was already replacing everything... if i wasnt then i would have just left it...

 

Just convert it to a open system. I've done it and it runs a lot cooler now and it's a lot less of a hassle to burp it after servicing it.
I have a 88 XJ with a 94 XJ radiator and thermostat housing.
You will also have to plumb the newer style heater hoses to get rid of all the steel tubes by the pressure bottle and get a newer heat shut off valve.
I also use my pressure bottle as a reserve tank now.

 

i just ran straight tube... no heater shutoff valve... lol...

 

Best thing I ever did was convert the wifes 89 to open system. Pulled rad, heater hoses and and heater valve from a 92. Both aw4s

 

ok screw this im going open system.....i took my wip for a free way drive and it started heating up it about 250 pushing to 260...

it wasnt the fan clutch i had that checked and it was fine i have a old radiator in and i was fortunate to run in to a guy with the same 88 xj as mine with an open system and he gave me all the advice i needed...i want to post pictures but this site wont allow me is there something wrong with the site....??

 

nope... sites fine as far as i know...

 

SO you decided to go open.... how did he tell you to do that? Since you cant post pictures can you tell us what you learned and if it worked? Thanks

 

Simple...https://www.cherokeeforum.com/f2/ren...d-shift-63044/