Did some testing today at 85f with the 19in fan and usmw 22160 fan clutch after 45 mins of idling and the ac on full blast she topped out at 210! Massive improvement! so far this is looking promising! Tomorrow will be in the 90s I will post again with this results. Cheers!
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Call me when you try this at 120+ degrees … fully idling doesn’t stress the system much. I vote go on a 10min freeway drive, 75+ mph. THEN idle.
Also, all my TJ/LJs were fine in the AZ desert heat. I’d see the gauge creep above the mid point 210 indicator, but that’s it.
I currently run a new Mopar fan clutch, stock fan, Mopar water pump, ported thermostat housing, ‘real’ 195 degree Robert Shaw thermostat and a Cold Case aluminum radiator. 110 (hottest it’s been so far) AC and idling, freeway, stop and go (real driving) and the temperatures may creep to the 210 indicator at most. Best performance I’ve seen in my 6 TJ/LJ Jeeps.
I may have said this but to reiterate the lessons of the TJ cooling system………….
Stant Superstat used to give rock solid temperatures, but they’re not crap and you’ll see fluctuations.
Same for Mopar!!!
Robert Shaw from Flowkooler offered tremendous stability.
Mopar fan clutch it perfect, starts to lock up when idling and releases when speed is underway (in 100+ weather)
I’m not sold on the porting of the thermostat housing, but I am NOT dissatisfied, and the cost isn’t bad.
Mopar Radiator is great! Actually, looks like a Autozone China special, but it works quite well, however, this cold case is better. I see lower peak temperatures and slower water temperature creep plus it looks beautiful with OEM-esque pressed tanks, not fabricated Lego designed like champion (I’ve used them twice).
Hayden fan clutches “work” and do OK, but the severe duty is too aggressive and causes the belt to slip above 3000-3500rpm, this is with new belts, pulleys and tensioner. But you can bet your pushing the fan to the limit, the heavy duty seems to be weaker than the Mopar, but the Mopar fan clutch falls right in the middle.
Stay away from silicone hoses, cheap rubber hoses are disappointing… Mopar radiator hoses are beefy, well made and have a few more intricate bends.
Throw your worm clamps the trash, buy constant tension clamps from the dealer or bel-metric, they last, they never ever leak.
Flush your engine block! Remove the drain from your engine block and run a ton of water, you’ll see all sorts of stuff come out, “stuff” doesn’t cool your motor. Replace plug with a brass plug for the future.