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    Happy days

    Evening all. After having water loss and a steaming exhaust on and off for 12 months decided to bite the bullet and go for serious repair. Started taking a few bits off then all what was left was the dreaded cylinder head bolts and studs. Amazingly all came out no problem and the heads pretty much fell off. Head gasket had given way on number 8 cylinder and was letting water into the exhaust valve. Everything else looks well, have ground the valves in and checked clearances. So question is do the experts put any sealants on the new gaskets when refitting or shall i just fit everything dry, hopefully it will all go back together as easy. Thanks

    #2
    Hylomar.
    Richard
    Mabel is a white 1972 Mk1½, TV8, Mo/d.

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      #3
      Some use well seal, some as above
      "The UK,s 2nd Most Easterly Stag" Quad Exhaust- ZF 4 Speed BOX

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        #4
        The new BGA gaskets, in standard and extra thick, have a red bead of sealant around the edge just like the NLA Payen ones. No need for additional sealant but, if you must, then Wellseal would be the best.
        Dave
        1974 Mk2, ZF Auto, 3.45 Diff, Datsun Driveshafts. Stag owner/maintainer since 1989.

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          #5
          OK thanks, have got the new gasket from the bros, the old gaskets did have a red rim around the edge but they are identical in shape to the new ones. I dont think they could have been on there very long some of the bolts were pretty much only finger tight.

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            #6
            Sorry, I should have said Wellseal.
            Richard
            Mabel is a white 1972 Mk1½, TV8, Mo/d.

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              #7
              Saintstag.
              I would recommend that you go for the new BGA gaskets. The silicone beading round the outside ensures a proper seal in that area, where coolant will often seep out. Also, the tooling for the older type of gasket was getting very worn, and as a result the thickness of gasket material between the bores and the waterways at the back of the engine was less than it should be, causing premature failure there. The failure of your later type was almost certainly due to the fixings being loose. New gaskets will need re-torquing at least twice after fitting to get a permanent seal.
              Mike.

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                #8
                Aha, thanks Lingen, bit too late tho just spent this afternoon putting everything back on!! Enjoying it tho,for a forty something year old car all seems well, everything lines up and all nuts and bolts are fine. Hopefully have it running by next weekend

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