coolant system upgrade
12-24-2013, 04:10 PM
#16
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Location: The Republic of TEXAS
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
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.
12-24-2013, 04:17 PM
#17
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Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
I'm suspicious allot of trouble people have had with the closed system (bottle blowing), is because they filled it up with coolant. Seems natural after all. I think leaving it 1/2 full of air helps, since air can compress under pressure and coolant won't. My system is stock at 277K, I even got the AC goen for that dog there!
12-26-2013, 10:56 AM
#18
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Thread Starter
whats the thickest electric fan i can run? i found one i like but its 2.5 inchs thick is that to big or should i try and find smaller and its a 12 inch i want to run two of them?
12-27-2013, 09:35 AM
#25
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Year: 1998
Model: Cherokee
Engine: 4.0L HO
Just remember when that efan(s) kicks in, thus placing a big load on the alternator, the motor won't exactly be freed up because it has to turn a tight (loaded) altenator.
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