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Old 06-26-2012, 04:15 PM   #1
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cooling SBC in 92 yj

mild build on 350,aluminum radiator 6 blade steel fan/shroud,50/50 mix of anti freeze-3&3/4 gallons in system.new water pump. On road 180*F . on trail or stop &go traffic temp climbs to 210-220. looking for suggestions on practical remedy. Thanks

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Old 06-26-2012, 04:16 PM   #2
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what size tstat do you have?

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Old 06-26-2012, 04:19 PM   #3
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vent the hood. but I might look for actual cause. air flow? did you remove the shroud?
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Old 06-26-2012, 04:20 PM   #4
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Thermostat is 165*F
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Old 06-26-2012, 04:23 PM   #5
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stock radiator? i know its not big enough. are you using it?
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Old 06-26-2012, 04:24 PM   #6
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and in traffic but not on load sounds like an airflow problem also. big winch in front of radiator?
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Old 06-26-2012, 04:26 PM   #7
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swap out the tstat for a 180-185 and it should fix it
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Old 06-26-2012, 11:21 PM   #8
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switch to an electric fan
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Old 06-27-2012, 01:35 PM   #9
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Can you post a picture of your radiator and shroud, fan etc
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Old 06-28-2012, 01:36 AM   #10
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picture of fan , radiator & shroud . I replaced 165*F tstat with a 180*F tstat. still can't let idle or it will get hot.
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Old 06-28-2012, 07:59 AM   #11
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How new is the motor? Is your timing right?
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Old 06-28-2012, 08:27 AM   #12
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131 miles on new build. timing is 14* before, total is 34* with vac adv. disconected
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Old 06-28-2012, 10:47 AM   #13
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Man I dunno why it's getting hot unless it has air in it somehow. I've run huge motors in yjs and never had a cooling issue.
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Old 06-30-2012, 11:03 AM   #14
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do you know what the fluid capacity of the radiators were ? Just trying to get some form of comparison
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Old 06-30-2012, 12:25 PM   #15
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Capacity I don't remember but the were a 2 1inch row aluminum. I bought a 4 row one this time just for extra insurance.
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Old 06-30-2012, 03:57 PM   #16
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Thought I had the issue solved! I moved the fan 1" closer to the radiator , That did make an air flow increase & I could let it idle for 15 min. But it did slowly creep to the 210* mark. down the road I went to cool it down.Getting closer I guess.
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Old 07-01-2012, 11:03 PM   #17
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Can anyone recomend a good choice of electric pusher fan ? Hot day today- bad driving experience. NEED to get cool...
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Old 05-05-2014, 01:00 AM   #18
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Woodtic,
Did you ever resolve your cooling issue? I'm running a 383 stroker in a 87 yj having cooling issues here in Arizona. Running a 180 t stat, 3 row alum radiator. Alum shroud with an electric fan. Will get up to 210 with no problems. And it's only 90 out right now. If we run the ac, it will heat up even worse. Been banging my head. Can't seem to find a solution. Help would be great. Thanks.

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