Electric fan/shroud combos

Heating, Cooling & AC

  1. diesel_lv

    diesel_lv Well-Known Member

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    A person observation, I have seen many car magazine articles touting electric fans and aluminum shrouds. They all swear by them and in cooler climates, where all the articles take place, they seem to work.

    I've used 3 different electric fan n shroud setups. 1 was from a Ford Contour, kept engine nice at slow, under 45mph, speeds and idling. But over 45, it would hit 220° n climbing. #2 was a custom made aluminum w flaps all over it for more airflow at higher speeds w dual 13" fans. Again, great at under 45mph and idling but 220° n rising over 45mph. 3rd was a vacuum molded plastic shroud w twin 12" high amp fans. The plastic shroud was curved on the inside. Same exact scenario as 1st two. Company said to add 3/8" slots at bottom for more airflow, then cut holes in each corner and add flaps for more airflow. Still same result.

    I only have 3" between radiator core and water pump shaft face. Serpentine pulley so reverse rotation pump and fan. No room for fan clutch. I am using factory shroud w a 19" nylon 11 blade reverse rotation fan from Chevy 496" truck directly mounted to w/p pulley. Works amazing. Slow, fast, idling. Engine on interstate stays around 176°, slower cruising around 186-192° a/c vent temps around 38°. This is w a 496 stroker in AZ w 115-125° ambient temps.

    Does anyone have any good experiences w an electric fan/shroud combo in Hot environment. Over 110°.
     
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    • Hubbarocks

      Hubbarocks Well-Known Member

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      what's the set up you have now? can you provide some more info on the car itself ? make , model , color ? (jk)
       
    • davek

      davek Well-Known Member

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      PICS?
       
    • Gsmopar

      Gsmopar Well-Known Member

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    • 451Mopar

      451Mopar Well-Known Member

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      I changed from a Champion 4-Core with Contour fans to a Griffin (Dual 1.25" core) and two Spal 13" fans mounted to radiator, no shroud.
      I haven't tested the new setup yet, but the two fans cover most of the radiator without a shroud, so going to try it without the shroud so there is no airflow restriction at highway speeds.
       
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      • PurpleBeeper

        PurpleBeeper Well-Known Member

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        No luck for me with electrics...pushers, pullers, both....all ran hot
         
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        • diesel_lv

          diesel_lv Well-Known Member

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          19" nylon 11 blade direct drive fan w factory shroud.
           
        • diesel_lv

          diesel_lv Well-Known Member

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        • diesel_lv

          diesel_lv Well-Known Member

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          I've contemplated going without a shroud. I have more than enough hp n the car will Never be raced. My only complaint to my direct drive setup is shaft wear on the w/p. Otherwise, it works great.
           
        • Gsmopar

          Gsmopar Well-Known Member

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          It does. I use the SD Meziere electric pump. I can drop the temps from 180 to the 1-teens in a matter of seconds by leaving the fans and pump on after I shut off the engine. The bypass mod also helps.

          48046291173_b1b3282561.jpg Untitled by Greg Ault, on Flickr

          40005238533_115ba190a6.jpg IMG_2288 by Greg Ault, on Flickr
           
        • Hubbarocks

          Hubbarocks Well-Known Member

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          what the bypass mod you speak of?
           
        • Gsmopar

          Gsmopar Well-Known Member

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          Tap the bypass hole and add a 1/8in restriction.
           
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          • diesel_lv

            diesel_lv Well-Known Member

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            Does this daily drive w a/c for a 100+ miles a day in 115+ temps?
             
          • Gsmopar

            Gsmopar Well-Known Member

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            I missed the part of your post that stated you only wanted replies from daily drivers that put 100+ miles a day in 115+ temps. No, I prefer the vented seats in my 2500 Cummins for that. This set up does keep my 605 Hemi <180 during the 115+ temps.
             
          • diesel_lv

            diesel_lv Well-Known Member

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            Oh I didn't just want those, I was just curious if it did. I just want to hear about anyone who actually had good luck in a daily driver in AZ summertime temps. I like my '03 Cummins too, but w the mechanical fan in the Coronet, it never gets warmer than 38° at the vents.
             
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