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Water Leak ! ! ! Newly rebuilt motor completely installed. Torque had been rechecked and found several head nuts loose. Serviced with water for initial start. While checking installation of engine, noticed water leaking from around and on top of some of the studs. Starting from the back # 14, #8, #7 and crazy enough there was some water around #11. Drained water and again checked torque which was good. Serviced again with water and found bolts leaking. No attempt to start car has been made.
How are these bolts leaking water when engine has not even been started? |
Re: Water Leak ! ! ! hi cape
head nuts are common to leak. some use technician in a can, some use dental floss under the nuts. i prefer to take the natural approach to just run it and do the retorques, as they usually seal themselves up. |
Re: Water Leak ! ! ! Thanks for the response Mitch//pa but we are not going to do anything to the motor until we here from the rebuilder. I would have hoped for what was paid for the rebuild this problem would not even have been there, but we have to remember these are mechanical problems that have to be dealt with.
I just was wondering what the members of the board would have to say as to what could be the cause of something like this. Thanks again, Mitch//pa |
Re: Water Leak ! ! ! cape,
i believe some causes are if the head studs holes are drilled to deep or just some leaching from the head gasket until it gets some good retorquing and heat cycles. i'm hoping on a fresh motor the planes are straight.. yes most definitely talk to the builder first. i have seen engines from reputable places all do this. keep us posted and let us know what they say P.S. say hi to Paul |
Re: Water Leak ! ! ! I don't think this is uncommon. I've experienced the same thing even just working on an engine and removing/replacing the head. I run it a bit, retorgue and repeat couple times, till ithe nuts stay at 55#. If there had been earlier leaking, it usually stops after that.
There is also a very reputable local engine shop that builds high end racing engines. They add a small amount of a special stop leak additive to prevent callbacks. You might investigate that. But going back to your rebuilder is the best next move. |
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Re: Water Leak ! ! ! I had a couple small leaks on two head studs after a gasket replacement. Last year. After a few retorques they both stopped. Just run it and it should be fine
L |
Re: Water Leak ! ! ! Like mitch//pa said, the block stud holes could be open to the water jacket. Normally they are blind holes, but if you use straight water in the summer and drain it during the cold winter, some water could seep into the blind stud hole, freeze and blow out the bottom of the hole and leave it open to the water jacket. If you encounter these blown out holes during a rebuild, it's best to seal the threads with a good gasket sealer like silicon to prevent leakage up the stud and around the head nut. If you plan on running straight water, I would seal all the head stud with sealer to prevent these blow outs.
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Re: Water Leak ! ! ! Were the stud threads chased??
Paul in CT |
Re: Water Leak ! ! ! Well..........the rebuilder was contacted and he instructed that the cooling system have some stop leak (don't remember brand name) installed. However we decided, because as some said it is not a problem, the only thing that was put in was water. After filling with water we noticed NO wet head bolts. Don't know why, because all we had done was drain all the water with anticipation of having to re-torque it again. Now have run motor four times as per rebuilder and no water issues. Thanks to all for your responses.
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