fannitti

ok so I'm going to be doing a coolant system upgrade on my 89 cherokee remix engine. i was planing on adding a 3 row radiator with 3 ten inch fans and a 180 t-stat. does that sound like a good plan? i know the remix is a sealed coolant system anything else i should do to help out. the water pump looks new so ill be leaving that alone. also new upper and lower hoses.

freegdr

Could upgrade to newer system eliminate pressure bottle all together .

fannitti

I was gonna add the macs expantion tank also?

djb383

Do a little home work......while a 3 row sounds like it must be better than the OE 1 row, be sure you know the core thickness. A 3 row core that is no thicker than a 1 row will most likely be less efficient than the OE 1 row (1.25" thick). Doing your home work especially applies to rad efans. The last thing u want to do is loose CFM air flow. The OE factory efan has been tested at 2300 CFM and the belt driven fan will move way more air than the OE efan at just above idle speed. A properly functioning t-stat does one thing only....determines MINIMUM coolant temp. The rest of the cooling system, its condition and driving conditions determine maximum coolant temp. Either system requires a bottle.

freegdr

?

Firestorm500

If everything in your cooling system is in good shape and to stock specs, it will be just fine.

Too many e-fans or too thick a radiator will hamper airflow. Low airflow across the fins mean the heat cannot be gotten rid of adequately.

180* thermostat is too low. Use the factory 195*, preferably MOPAR.

Keep the closed cooling system. It works fine. You do not use an auxiliary overflow tank, because in a closed system there can't be one. The plastic bottle is the pressure vessel.

fannitti

I'm taking the ac system out compleatly. Can I just get another factory electric aux fan and run two of them at the same time? If 180 is to low keep 195? At what temp should I have the fans kick on both together or two seperate temps? Everything I read says get rid of the closed coolant system

scubamark13

Stick with the OE radiator! I used a CSF 3 row from Radiator Barn and it actually made my Jeep run Very HOT!

Firestorm500

Keep the closed system.

Keep the factory mechanical fan as well as the factory electric fan.

Keep the 195* thermostat.

After extensive testing, the factory gave your Jeep the proper combination of cooling components.

My '87 Renix does just fine. Temps in my area can reach 114* in the summer and below 0* in the winter. No problems. Why do you think yours needs an "upgrade"? What are you going to do about having no A/C pulley for the belt to go around?

fannitti

with a 195 t-stat? i want to ditch the machanical fan and do electric. i also wanna use the factory electric fan because i wil be taking my ac out compleatly. could i just used two of the electric fans from a 97+ cherokee will that be enough? also i want to add a better wanter pump maybe a high flow i thik ive read people use the flowkool ones and i also see a lot of people use the mac expantion tank with the vent hose on renix engines.

Firestorm500

I feel like I'm talking to a wall here.

You don't need any of that stuff you are fantasizing about. But it seems like no matter what we say, you are h*ll bent on doing it.

Go for it. You'll find out.

fannitti

what i read and what people are saying im getting two diff ideas so just tell me whats the best. i do plan on gettin rid of the ac with a dummy wheel and i want to get rid of the machanical fan and upgrade to an electric fan tell me then

dwright98xj

Why are you bothering with all this is what folks don't get.

lualchro

I went the easy route:

Kept the OEM Radiator
Added an inline filler neck (set it a little up and between the AC Compressor and the Head) and replaced the pressure bottle with a normal overflow tank from a different vehicle.
Got a efan from JEGS, I think it was a 12 inch, just replaced the mechanical with this one and have it running with the signal from the stock AC e-fan.

Result: No more overheating for my jeep, it runs fine around 190 and e-fans turn on when the temp is reaching around 210 (at traffic jams or very slow driving only)

fannitti

im gonna wheel the thing i just want to make sure im not gonna have any issues but if u all say stay stock then thats what ill do but i will be adding a electric fan i found one i like on summit racing but i dont know if it will be to thick to run says its 2.5 inchs thick and has 2000 cfm's