Re: 360 leaks water from lower timing cover bolt
[Re: 70FJ5383]
#2413488
12/05/17 10:54 AM
12/05/17 10:54 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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I would not use RTV, Teflon tape is better. It will seal and it will keep the bolt from corroding itself solid tot he block.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: 360 leaks water from lower timing cover bolt
[Re: Supercuda]
#2413496
12/05/17 11:11 AM
12/05/17 11:11 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
Joined: Nov 2003
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Lincoln Nebraska
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X2, I would use some thick cement like permatex #2 or Indian head shellac.
live every 24 hour block of time like it's your last day on earth
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Re: 360 leaks water from lower timing cover bolt
[Re: Supercuda]
#2413529
12/05/17 12:56 PM
12/05/17 12:56 PM
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Joined: Apr 2007
Posts: 2,918 Calgary, Alberta Canada
a12rag
master
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master
Joined: Apr 2007
Posts: 2,918
Calgary, Alberta Canada
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I would not use RTV, Teflon tape is better. It will seal and it will keep the bolt from corroding itself solid tot he block. X2 . . . teflon tape the bolt . . .
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Re: 360 leaks water from lower timing cover bolt
[Re: dvw]
#2414147
12/06/17 12:58 PM
12/06/17 12:58 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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Agreed (on the leak potentially being nearby). I would drain the coolant & screw in an NPT "tank valve" (less than $3 at O'reillys) into the cooling temp sensor port at the top rear of the block & with shop air pump it up to 15 lbs & see if it holds. You can spray a soapy water solution around potential areas to see if it starts to bubble (for external leaks) & there is a "bubble up" (iirc) solution that reportedly bubbles more readily but the dish soap in some water has worked for me. EDIT on second thought I would pump it up to just 10 for a start.
Last edited by RapidRobert; 12/08/17 09:38 AM.
live every 24 hour block of time like it's your last day on earth
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Re: 360 leaks water from lower timing cover bolt
[Re: Joesixpack]
#2415422
12/08/17 09:31 PM
12/08/17 09:31 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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Have same problem with bolt above timing tab, went to tighten it Which bolt (hole) in particular is that?
live every 24 hour block of time like it's your last day on earth
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Re: 360 leaks water from lower timing cover bolt
[Re: Joesixpack]
#2416940
12/11/17 08:22 PM
12/11/17 08:22 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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those lower threads on the aluminum timing cover are a weak 11/16" deep & open on the back side & go directly into the timing chain area/eng oil & it uses a 3/8 bolt so I'm thinking if you could block the very back with something fairly firm just to temporarily plug the rear end of that passage for your work then drill/tap a good amount of the threads then carefully/lightly blow the chips out the front (the critical part) & I would use brake kleen as opposed to shop air & either helicoil or just drill/metric tap to the next larger metric size/use a metric bolt. Use grease on the tap to catch alot of debris. EDIT Another option might be to permanently JB weld a stud in there
Last edited by RapidRobert; 12/11/17 11:11 PM.
live every 24 hour block of time like it's your last day on earth
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Re: 360 leaks water from lower timing cover bolt
[Re: Joesixpack]
#2419811
12/17/17 12:52 PM
12/17/17 12:52 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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I wouldn't think you would need to go to all that trouble (helicoiling undamaged threads). I think the one thread just went bad (they are aluminum) & after this you will be OK. Just me I'd clean em (& the bolts) & use some sealer & call it good.
live every 24 hour block of time like it's your last day on earth
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Re: 360 leaks water from lower timing cover bolt
[Re: 70FJ5383]
#2419835
12/17/17 01:30 PM
12/17/17 01:30 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Putting in helicoils in a timing cover on the bench isn't a lot of effort. doing it while the timing cover is installed in the vehicle is another story.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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