Why do most early Vipers have flaps on side of the fan shroud?

Discussion in 'RT/10 and GTS Discussions' started by AAKVIPER, Jun 6, 2019.

  1. AAKVIPER

    AAKVIPER Viper Owner

    Posts:
    252
    Joined:
    May 9, 2007
    Location:
    Princeton area ..Central NJ
    upload_2019-6-6_19-15-43.png



    Can we take the flaps off each side for better air flow? What purpose to they have?
     
  2. Big E

    Big E Viper Owner

    Posts:
    52
    Joined:
    Nov 16, 2006
    Location:
    Missouri
    They are for airflow. At low speeds, stop and go, idling, to help direct air thru the radiator with the fan. At speed the fan can't pull enough air vs the air speed so the flaps "open" up. Simple yet functional. Hope this helps.
     
  3. MoparMap

    MoparMap VCA National President

    Posts:
    1,521
    Joined:
    Jan 7, 2013
    Location:
    Kansas
    Yep, these have been common on radiator design for a while. They let the fan do its job when it needs to and get out of the way when there's enough airflow. Not a good idea to remove as the fan would try to pull hot air from the engine bay backward through the flaps.
     
  4. C O D Y

    C O D Y Enthusiast

    Posts:
    2,441
    Joined:
    Aug 21, 2000
    Location:
    Vancouver, WA
    That's the 1999 to 2002 fan. The earlier ones had plastic doors instead of flaps all on one side.
     
  5. GRANGER73

    GRANGER73 Viper Owner

    Posts:
    513
    Joined:
    Dec 26, 2007
    It’s the poor mans version of a fan shroud.
     

Share This Page