Oil cap

Discussion in 'General Amphicar Discussion' started by G_Zink_us@yahoo.com, Mar 16, 2001.

  1. G_Zink_us@yahoo.com
    Online

    Hi all,

    I have a question about the proper oil filler/cap to use. My car has
    an improper rubber cap that seems to melt a little when the engine
    gets hot so I want to replace it with a metal one. Gordon's catalog
    lists two caps- one vented for late cars with emissions and the other
    non-vented. Mine's a '67 that might be considered late but I don't
    see any type of emissions equipment. Anyone have the answer on the
    cap to use and if there is a replacement I can use from a standard
    auto parts store?

    Greg Z.
    '67 (white)
     
  2. David Chapman
    Online

    Yes, the engine is basically a vent to air design, the mushroom style oil
    filler cap has a metal gauze underneath. The manual says this should be
    washed in a petrol/parrafin (gas/kerosine) mix occasionally so that air
    flows freely, an easier way is just squirt some carb cleaner through it once
    every couple of years.

    For the American market Triumph modified the design to a more closed system
    to better comply with emission regs (emissions are measured on the whole
    car - not just what comes out of the tail pipe !) The modified system had a
    hose from the top of the rocker cover to the engine side of the air cleaner,
    theory is that fumes are sucked into the engine. The oil filler cap is
    replaced by one that forms a more airtight seal.

    Advantages of the early system:
    Slightly better performance as only clean air (which burns well) is drawn
    into the engine, not stale oily fumes.
    Carb is normally cleaner and less gummed for same reason.

    Advantages of the later system
    Less likely to smell the fumes in the car.
    Probably a legal requirement in some parts of the world !

    I think the description is wrong as the later type cap is unvented, and yes
    you can use any sort - just looks ugly. By the way, those little decals Hugh
    used to sell for the early cap came from me and are no longer available so
    take care of any you have !


    David Chapman in the UK


    ----- Original Message -----
    From: <G_Zink_us@yahoo.com>
    To: <amphicar-lovers@yahoogroups.com>
    Sent: Friday, March 16, 2001 3:25 PM
    Subject: [amphicar-lovers] Oil cap


    Hi all,

    I have a question about the proper oil filler/cap to use. My car has
    an improper rubber cap that seems to melt a little when the engine
    gets hot so I want to replace it with a metal one. Gordon's catalog
    lists two caps- one vented for late cars with emissions and the other
    non-vented. Mine's a '67 that might be considered late but I don't
    see any type of emissions equipment. Anyone have the answer on the
    cap to use and if there is a replacement I can use from a standard
    auto parts store?

    Greg Z.
    '67 (white)



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