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Thread: Looking for Oil Filler Cap TR4/TR6

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    Looking for Oil Filler Cap TR4/TR6

    Where can I find a chrome or polished stainless oil filler cap? I have a 6 cyl chrome valve cover, the opening is 1 3/4" ID, 2 1/4" OD with tabs on the cap that are bent over to engage the external lip of the valve cover. I've been to TRF, Victoria, Moss, Rimmer (they have the galvanized type), Sportscarparts, Amazon and e-bay, etc. Anyone know a place that carries these? I would like to replace the dingy galvanized one that is on there now... Thanks!

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    Re: Looking for Oil Filler Cap TR4/TR6

    ok, so after more inquiring, I come across BadBoy Classic Car Parts website from the UK. He offers a cap that looks identical to a radiator cap, and he confirms thay are the same size! So, I can order a nice radiator cap, take off the pressure regulator(or leave it on) and voila! If Im wrong, let me know.

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    Re: Looking for Oil Filler Cap TR4/TR6

    If you have a stock valve cover, even if it's been chrome plated, the radiator cap for the stock radiator fit.
    Spitfire caps work too
    https://www.ebay.com/itm/Triumph-TR6...MAAOSwSUxeRJVB
    DRIVE 'EM IF YOU GOT 'EM

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    Re: Looking for Oil Filler Cap TR4/TR6

    Thanks, much appreciated!

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    Luke Skywalker
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    1960 TR3A TS73117 (under endless restoration, owned since 1964)
    1959 TR3A TS58023 (in case I never finish the one above)
    1969 Triumph Herald 13/60 (a whim)
    1970 Lotus Elan Plus 2 /0023/N
    1992 BMW325IC (fun to drive)

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    Re: Looking for Oil Filler Cap TR4/TR6

    Hey Tom, These do not fit because the locking feature is down inside the valve cover. The TR6 locking feature is on the external lip, just like the radiator. I compared a radiator cap to the valve cover cap and they are the same. Otherwise this would be the cap of my choice...

  7. The Following User Says Thank You to roadsteroldster For This Useful Post:

    TomMull (03-19-2020)

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    Luke Skywalker
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    Re: Looking for Oil Filler Cap TR4/TR6

    Live and learn. Thanks for the info.
    Tom
    1960 TR3A TS73117 (under endless restoration, owned since 1964)
    1959 TR3A TS58023 (in case I never finish the one above)
    1969 Triumph Herald 13/60 (a whim)
    1970 Lotus Elan Plus 2 /0023/N
    1992 BMW325IC (fun to drive)

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    Re: Looking for Oil Filler Cap TR4/TR6

    You are welcome!

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