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Old 02-18-2011, 06:48 PM   #1
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Radiator Aluminum or not ?

OE radiator in my 98 TJ is shot
I've got the 4.0 with auto tranny
No engine mods,6"lift 33" tires
Winch in front does block some of the air flow
Would like to replace with 2 or 3 row all aluminum
I do not plan on a V8 engine swap (unless I have to)
Any opinons,advise good or bad
Thanks

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Old 02-18-2011, 07:00 PM   #2
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I too have a 98 with the 3 speed auto 6" lift and 35s.I replaced the radiator last year with one from napa and its like the factory one. I wish at the time I had the money for a copper core radiator but the napa one is holding up fine and it was under $150 with lifetime warranty

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Old 02-18-2011, 07:09 PM   #3
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Yeah don't know if the higher cost of the all aluminum is worth it or not
and if there is more maintenance involved
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Old 02-18-2011, 07:19 PM   #4
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An all aluminum core radiator is more efficient at cooling than the usual materials used in cheaper radiators. But a single-row aluminum core, like Jeep converted to around 2002 or so from the previous 2-row aluminum core, is a more efficient cooler for the way a Jeep is driven. Jeep went to the single row to help improve cooling. Yes I know that may sound counterintuitive but it's true.
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Old 02-18-2011, 11:44 PM   #5
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So going to a 2 row aluminum would be sufficient for my current setup
That would save me bucks toward my next question
for anyone,what about a 2500 CFM electric fan
to replace the OE fan & clutch
I've herd you can gain back a little power
What would the down side be,if any
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Old 02-19-2011, 12:06 AM   #6
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Quote:
Originally Posted by Iaokie View Post
So going to a 2 row aluminum would be sufficient for my current setup
That would save me bucks toward my next question
for anyone,what about a 2500 CFM electric fan
to replace the OE fan & clutch
I've herd you can gain back a little power
What would the down side be,if any
You're not going to beat the reliability of a clutch fan. Whatever power gained back is not worth the tradeoff, to my mind. Maybe on a quarter mile car, but not on a Jeep.
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Old 02-19-2011, 05:44 AM   #7
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Adding the electric fan helps take alot of stress off the engine. Do some reading about using a ford taurus fan and how much power it will give you and not just for a quarter mile cars anymore. lots of newer cars come with electric fans to help with fuel economy and power. Jp magazine has a write up on changing to a electric fan. Mine will be goin on very soon. Its from a taurus and it has hi and low speeds. Flexalite fan is claiming about 15 hp on the dyno
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Old 02-19-2011, 11:11 AM   #8
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There is no free lunch from adding an electric fan. The added amperage draw from an electric fan places a bigger load on the alternator that then becomes harder to turn. Yes that is true, the more load on an alternator or generator, the harder it is to turn.
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Old 02-19-2011, 11:51 AM   #9
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That is true. but when in stalled with a controller that has a temp range that turn the fan on and off then its not running all the time. I ran this set up on my 67 Mustang and 79 f 250 for years with only a 40 amp alternator with out any problems . So then the only time there is extra stress is when the fan turns on not after its running
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Old 02-19-2011, 12:31 PM   #10
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Is the taurus fan setup require a different fan shroud or would you make brackets
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Old 02-19-2011, 01:56 PM   #11
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I cut the taurus fan shroud off and going to be usen the one from the jeep
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Old 02-19-2011, 01:57 PM   #12
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I bought the CSF all aluminum radiator from Radiator Barn. (2 Row)
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Old 02-19-2011, 01:59 PM   #13
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Originally Posted by just4fun View Post
That is true. but when in stalled with a controller that has a temp range that turn the fan on and off then its not running all the time. I ran this set up on my 67 Mustang and 79 f 250 for years with only a 40 amp alternator with out any problems . So then the only time there is extra stress is when the fan turns on not after its running
That is how the OE mechanical fan works too. It has a clutch that couples the fan to the engine via a viscous fluid that releases the fan when the engine is cold and engages the fan when the engine is hot.

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