SBC water creeping up head studs
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  1. #1
    Official RnS Addict Taxirod's Avatar
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    SBC water creeping up head studs




    Fired up new engine 1st time today, noticed water coming from some of the head studs.
    They were fitted by someone else, maybe they didn't use thread lock/sealer.

    I'm hoping to be able to remove one stud at a time and put back with sealer, after draining water down of course.

    What do you reckon?
    I may live in East London, I may have a number plate that reads "Chopt", but I do NOT use 6" wheel spacers!

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    Official RnS Addict timbo56's Avatar
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    I've never rebuilt a SBC but on my Jaguar engines with open nuts that leaked (they usually have domed nuts) I put a good RTV sealant around the studs under the washers, it always did the trick.

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    Quote Originally Posted by Taxirod View Post



    Fired up new engine 1st time today, noticed water coming from some of the head studs.
    They were fitted by someone else, maybe they didn't use thread lock/sealer.

    I'm hoping to be able to remove one stud at a time and put back with sealer, after draining water down of course.

    What do you reckon?
    typical vauxhall!!!!!!!
    at least dick turpin had the decency to wear a mask!

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    Stroker Kustom Jim's Avatar
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    I was gonna use studs on my SBC but ain't got the room to pull heads off when in car due to bulkhead overhang.
    But I do remember my research and apparently it's imperative to put loads of sealant goop on, some studs worse than others - it's a coarse thread in cast iron so even with pukka ARP studs ya up against it.
    I'd guess that as long as it ain't a high comp race engine then you could swap em out one at a time ( maybe slacken em off somewhat once all done and retorque together - I like the idea of studs as the threads being retightened are not in the old iron block but ARP bits on top of head ) but how ya gonna unwind it? May as well as pull em and be done with it then you could put on quality reusable head gaskets!?

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    Official RnS Addict mygasser's Avatar
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    sounds like a plan ian, one at a time only though.
    neil.
    need a job done on your project? i may be able to help.

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    Official RnS Addict Taxirod's Avatar
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    Thanks all for your helpful comments.

    Ive got some Permanex sealant which Ive used on the inlet manifold gasket, that should do the trick?
    I may live in East London, I may have a number plate that reads "Chopt", but I do NOT use 6" wheel spacers!

  9. #7
    I'm a grown up drunk! chevy2's Avatar
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    Yes Ian, some of the head bolts go into the water jackets on sbc's,
    You're supposed to run sealants on the threads,
    I reckon its worth a go, pull the studs one at a time and blow the remianing water out thiroughly with a air blow gun and then refit/torque them back one at a time with sealer on the threads.

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    I always coat the threads with this stuff, it's meant for the job.
    https://www.permatex.com/products/ga...-no-2-sealant/

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    Official RnS Addict Stude Star's Avatar
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    Drain the coolant before you do it as the you’ll be screwing the bolts into coolant. In fact coolant will probably come out of the bolt holes if not drained.

    Obviously you can’t clean the threads in the block so just do the best you can. Really clean the studs and put liberal amounts of sealant on. Good luck.

  12. #10
    Official RnS Addict brading's Avatar
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    You should be able clean the thread a bit in the block if you get an old stud or a bit of threaded rod and with a cutting disc cut 3 or 4 slot length ways in it a bit like a tap. Then when screw it in hopefully some of the muck will end up in the slots and stay there when you screw it out.

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