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Thread: Valve Cage

  1. #1

    Valve Cage

    I was reading through a book entitled "Krausz's ABC of Motoring" (1906), where the term "valve cage" (of the engine) was used. What is a valve cage?

  2. #2

    Re: Valve Cage

    Good to know that you're into the older cars! A valve cage was an early design that was a removeable unit, valve, spring and seat. Try to picture a BIG sparkplug about two inches wide at the threaded portion, the valve would be in the same location as the porcelain insulator, with a spring and keeper. This unit could be removed to grind the valve seat in an early T head engine. If you can find a copy of Dykes Automobile Encyclopedia there are some great illustrations of this valve design. This design is still used in some diesel engines today.

  3. #3

    Re: Valve Cage

    Thank you for your response!

    This morning I located the only A.L.Dyke publication I have, The Diseases and Cures of a Gasoline Automobile and How to Cure Them (Revised edition-1908), which does not have the illustrations you mention. However, your description is very complete and understandable.

    Thanks again.

  4. #4

    Re: Valve Cage

    The later (WW-I era) Dykes Encyclopedias mention them.

    I think Buicks used caged valves, pre-'20s.

    Some early motorcycle engines also employed this technology.

    They had pretty much disappeared from passenger cars by 1925 or so.

    De Soto Frank

  5. #5
    Senior Member
    Join Date
    Nov 1999
    Cheyenne, WY, USA

    Re: Valve Cage

    I own a 14 and a 22 Buick and both have cage valves. They work fine.


  6. #6

    Re: Valve Cage

    My 1923 Buick had caged valves.You could take a large spanner and out came valve,seat spring and all. You could grind the valves without draining the coolant.Neat!

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