Home Forums General Technical Help Core plugs

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  • #12086
    Terry
    Participant
    Club Member

    Can anybody please tell me how many core plugs are fitted to a 1967 1200 Anglia engine.
    Many thanks
    Terry

    #22395
    JAN
    Participant

    Four. Two are in the block below the manifolds; on in the back of the block ahead of the flywheel, and one in the back of the cylinder head.

    #22396
    Terry
    Participant
    Club Member

    Jan.
    Thanks for your reply.
    Terry

    #22404
    Smudger
    Participant
    Club Member

    And isn’t it always the one in the back of the block that springs a leak!

    #22407
    JAN
    Participant

    @Smudger wrote:

    And isn’t it always the one in the back of the block that springs a leak!

    Yep!

    #76362
    brianw
    Participant
    Club Member

    I have found TWO of mine are leaking .. The ones under the manifold .. They were new with the engine re-build less than 3 decades ago!

    Can these be changed with the engine in the car ?

    Any tips ?

    #76376
    JAN
    Participant

    Yes, they can, but you’ll need to remove the manifolds, so a new gasket is advisable.

    To get the old plugs out, a screwdriver or similar is hammered through them, then levered against the block to pull them out. Clean up the hole, then hammer in the new ones, flange outwards. DO NOT hit the centre of the plug but the flange only; hitting the centre causes them to ‘dish’, so reducing their outside diameter and making them a loose fit. You do not need to apply sealant.

    #76377
    brianw
    Participant
    Club Member

    Thanks JAN… That makes it sound easy enough for me to cope with ! .. Brian

    #76420
    brian marshall
    Participant
    Club Member

    One extra tip to help fitting core plugs a little easier. Put them in your deep freezer for a couple of hours first, this contracts them and they fit easier and expand as they get back to normal temperature.

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