Gen II -- Why No Hood Leading-Edge Gap Seal? The Gen III has it!

Discussion in 'Gen II Prius Technical Discussion' started by Rokeby, Nov 3, 2009.

  1. Rokeby

    Rokeby Member

    Jan 21, 2008
    Ballamer, Merlin
    Your Vehicle Year:
    2008 Prius
    I pull into a parking space between two 2009 Camrys (Camries?)
    Just for fun, I get out and look at them really closely.
    Whoa! What's this? There's a gasket sealing the ~3/8 inch gap between
    the leading edge of the hoods and the bodywork. Its outer surface is
    effectively flush with the body work and the hood... a smooth
    transition between the two. Interesting.


    I check the hood-upper grill gap on Amapola. It's about 5/16 inch, no
    gasket. Open hood; no gasket anywhere in sight.

    Check other Toyotas near by:
    * Gen III has a ~1/8 inch gap and a gasket, again with a nearly flush fit.
    * Recent Corolla has ~1/4 inch gap and a gasket, and a nearly flush fit.

    Why should Gen II drivers care?

    To help retain heat in the engine bay in the cold months I have both
    upper and lower grill blocks. Additionally, I'm seeing some FE/MPG
    improvement from using hadiant heat barrier/reflector. More on this

    I see the gaping 5/16 inch gap between the blocked upper grill and the
    hood as a way for unwanted cold air to be jammed into the engine
    bay, where I don't want it.

    What to do?

    I could buy some of the Camry gasketing. It is a very soft, hollow "P"
    shape.Not all that expensive, ~ $22 -- I've found nothing in this shape
    at the local Auto Zone, Pep Boys, etc.:

    Wholesale Toyota Parts

    Or, I could block it with a slice of the water pipe insulation material I
    already use. Cost, ~ $0.00

    In addition to blocking the air, I want a smooth transition, like the
    other cars. I'm thinking I am more likely to get it with the Camry
    gasket than with the pipe insulation.

    Constructive comments, observations, etc, are welcome.
  2. hobbit

    hobbit Senior Member

    Mar 23, 2005
    Your Vehicle Year:
    2004 Prius
    The real gasketing is internal, the rubber piece about 4 inches
    back that comes down on that black radiator-cover plastic.
  3. BAllanJ

    BAllanJ Active Member

    Dec 9, 2008
    Kingston Ontario
    Your Vehicle Year:
    2009 Prius
    Or you could use duct tape... kinda ugly, though. :)
  4. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Oct 2, 2004
    Your Vehicle Year:
    2010 Prius
    What hobbit said. Plus, look at the design. All the cars you mention have bumpers that include the grille and actually go past the grille. The Gen 2's hood goes all the way to the front (i.e. the top part of the grille is the hood) and the gasket is underneath and "internal"