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Old 08-11-2016, 04:06 PM   #1
flatheadv8
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Default Leaky head nut ....help please

I have coolant leaking from the head bolt on the right side of my 85hp flathead. Is this stud going into a water jacket with coolant leaking up through the threads or is it not a stud into a water jacket and the coolant is leaking to due the head gasket? How do I fix it? I have observed no coolant in the oil. Thank you for the help.
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Old 08-11-2016, 04:25 PM   #2
V12Bill
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Default Re: Leaky head nut ....help please

several of the studs go into the water jacket. pull the stud , you may have to remove the head, and use a sealant on the threads. You may get by by re torquing the head nuts. These leaks are rather common.
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Old 09-22-2016, 06:11 AM   #3
flatheadv8
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Default Re: Leaky head nut ....help please

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Originally Posted by V12Bill View Post
several of the studs go into the water jacket. pull the stud , you may have to remove the head, and use a sealant on the threads. You may get by by re torquing the head nuts. These leaks are rather common.
Got it thanks for the help!! I added a bit of sealant and re- torqued the head nuts!
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