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Help with 401 heads |
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markbritt
AMC Fan Joined: Mar/20/2017 Location: Merriville Status: Offline Points: 5 |
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Posted: Mar/26/2017 at 9:37am |
Thanks to all on the advice and offering options. I talked with my machinist and he did offer a solution that would be to drill out the hole and insert a tapered plug. He also cautioned that since we don't know the extent of the crack, this may not solve the issue. Oil/Antifreeze leaking out of a hole is one thing, but since I don't know if anti is leaking into the oil, I have decided to pull the head and replace with a rebuilt 360 head I have.
Mark |
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Moffman
AMC Nut Joined: Sep/28/2011 Location: New Jersey Status: Offline Points: 287 |
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Not sure if you want to go this route but may be helpful, Devcon makes an epoxy product that is titanium reinforced. Resistant to chemicals and max temp is 350 F.
Here's some info on it. 90 bucks on amazon. http://www.devcon.com/UserFiles/File/Devcon_Catalog_LR(2).pdf https://www.amazon.com/Devcon-10760-Gray-Titanium-Putty/dp/B00065TM08 |
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markbritt
AMC Fan Joined: Mar/20/2017 Location: Merriville Status: Offline Points: 5 |
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The head that was cut was a ruined 304 head, but the idea of seeing the thin section provided a good information on the water jacket and oil tubes.
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MidWestMind
AMC Apprentice Joined: Feb/03/2014 Location: Louisville, KY Status: Offline Points: 34 |
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Yes they were. There was a guy trying to sell the 502-2's on fb last week as 401 only heads. |
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69 ambassador 390
Supporter of TheAMCForum Joined: Nov/22/2009 Location: Peoria, AZ Status: Offline Points: 3539 |
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Yeah!! Now that he cut a couple of pounds off it, no way is it gonna anchor his boat as well!!
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Steve Brown
Algonac, Mi. 69 Ambassador sst 390 84 Grand Wagoneer 69 Cougar XR7 65 Fairlaine 500XL 79 F-350 Super Camper Special |
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FSJunkie
AMC Addicted Joined: Jan/09/2011 Location: Flagstaff, AZ Status: Offline Points: 4741 |
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So you ruined a perfectly good 304 head.
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1955 Packard
1966 Marlin 1972 Wagoneer 1973 Ambassador 1977 Hornet 1982 Concord D/L 1984 Eagle Limited |
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Moffman
AMC Nut Joined: Sep/28/2011 Location: New Jersey Status: Offline Points: 287 |
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From the pics I thought you pulled the head and cut it in half for a second there, was gonna say that's one way to check.
Here's what I would do: Fill that hole and buy a bulltear intake manifold alternator bracket lol |
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ghinmi
AMC Addicted Joined: Apr/04/2010 Location: Grand Rapids MI Status: Offline Points: 978 |
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If you end up needing a head, let me know. I sold a large lot of parts to a buddy in Indianapolis including a bare 1973 401 head. The other was damaged so only the one is usable.
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1975 Cherokee S - Turbo Hemi stick shift autocross/drag race/street 9.97 @ 140.4
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Moffman
AMC Nut Joined: Sep/28/2011 Location: New Jersey Status: Offline Points: 287 |
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If you're lucky, you should be able to get away with plugging it with an insert and some sealer. To me the most concerning part is not only coolant but oil as well. How does your oil and coolant look, any cross contamination inside? |
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markbritt
AMC Fan Joined: Mar/20/2017 Location: Merriville Status: Offline Points: 5 |
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Picture - yes I have several and will post tonight. I have one of those diag cameras on the long want, so I was able to get right up to the hole.
My main concern here is plugging the hole Yes, that will resolve the drips, but can this crack be large enough that anti will still flow into the oil behind the plug? |
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