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Water leak

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9N Chuck in MO

09-24-2001 09:45:31




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Yesterday was a day of triumph and dismay. I finally got my 9N back together enough to see if it would fire and it did. YES! I also got it back together enough to find out that I have a serious water/coolant leak. During the repairs, I had the manifold removed and I cleaned the block and the manifold meticulously before I reassembled. I used a new gasket and high temp. gasket compound. I thought I had all bolts in pretty tight but got a bad leak out of the rear bolt hole, and maybe elsewhere because water was running out the exhaust port. It was not fun watching the water run out of the tail pipe. This was while filling radiator, so no pressure, and block cold. I tried to tighten bolt and I think I striped the bolt hole. I was thinking about loading up the bolt and bolt hole with gasket compound. How screwed am I? Anybody been here or got any ideas? HELP. thanks, Chuck

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Dave Smith

09-24-2001 12:10:30




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 Re: water leak in reply to 9N Chuck in MO, 09-24-2001 09:45:31  
Chuck. You did not say what repairs you did. If you just removed the manifold I would remove it again and leave the studs in. You said water was running out as you filled it. I would refill it with water and watch for where it leaks out. If it is just the stud remove it and install a helicoil with sealer and reinstall a new stud with sealer. If it is a crack in the block you have a bigger problem. Let us know how you make out.
Dave <*)))><

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9N Chuck in MO

09-24-2001 12:41:34




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 Re: Re: water leak in reply to Dave Smith, 09-24-2001 12:10:30  
great ideas. I kinda figured I was gonna be pulling the manifold off. by the way, and please excuse my ignorance. What is a helicoil, and can I get this at regular hardware, or auto parts store?



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Jim(FL)

09-25-2001 06:43:10




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 Re: Re: Re: water leak in reply to 9N Chuck in MO, 09-24-2001 12:41:34  
Chuck If you have a stripped stud hole in the block, you have another option besides the helicoil. A large hardware dist (or even your neighborhood NAPA store shuld be able to order) will have new studs available with two differant sized ends (one is oversized for just this situation). If I remember correctly the manifold stud is a 7/16 inch stud (course threat on the block end and fine thread on the nut end). You could get a combination 1/2 inch course thread with 7/16 fine thread stud for your situation and then tap out the block to 1/2 inch coarse to accept the new stud. The block in this area is fairly thick and should easily be tappped to 1/2 inch stud.

Anyone else see a problem with my thinking? I have not done this but it would be one of my options if I had this problem.. PS I don't like helicoils.
Jim

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Dave Smith

09-24-2001 13:10:50




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 Re: Re: Re: water leak in reply to 9N Chuck in MO, 09-24-2001 12:41:34  
Chuck,A helicoil is a gadget that looks like a tightly wound spring. You have to drill a oversize hole and install it with a tool that comes with the kit. They are not that expensive and do the job. All better hardware stores have them. Also all auto part stores.
Good luck and let us know how you make out,
Dave <*)))><



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JerryU

09-24-2001 13:06:35




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 Re: Re: Re: water leak in reply to 9N Chuck in MO, 09-24-2001 12:41:34  
A helicoil is a coil of special wire which is wound so the inside is exactly the same thread as the hole that was buggered up. They usually come with a tap and drill so you drill out the hole, tap the hole oversize and then thread this coil or springy looking thing in. It locks into place and you have a new set of threads same as the old.

They are usually available at auto parts stores.

There are other types of inserts as well, Helicoil is one brand.

HTH

JerryU

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JerryU

09-24-2001 10:42:25




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 Re: water leak in reply to 9N Chuck in MO, 09-24-2001 09:45:31  
I don't think you are too bad of shape. The manifold studs go straight into the water jacket. It is adviseable to put some type of sealant on these before putting them back in. You can use teflon tape, permatex, or a wide variety of sealers.

As far as if it is stripped, I recall there is plenty of meat to drill it out and put in a helicoil (I am working from memory). This would be the permanent fix. Otherwise you might just try a tap in the hole, a new stud and some Locktite if it is not super stripped.

There will probably be some more ideas. Generally on these old Fords someone has "been there, done that" and is willing to share the cure.

JU

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