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Core Plug Sealing #736765
May 29th 2018 2:53 pm
May 29th 2018 2:53 pm
Joined: Jun 2010
Posts: 1,030
USA
N
nikothenomad Offline OP
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nikothenomad  Offline OP
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Joined: Jun 2010
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USA
So, discovered a core plug leak the other day. Drained the block, popped it out and now am awaiting the replacement to arrive (apparently, all of the stores in this area have only the 'deep' ones and mine was definitely shallow). Anywho, I have heard that some folks back in the day would coat the inside or backside of the plug (the part that will have coolant flowing past it) with something to cut down on corrosion over time. Essentially, if there is a barrier between coolant and metal the breakdown is less??

Any thoughts?

GO!


Nicole
1988 Dodge B250 5.9l 360 Ram CamperVan / 727 Tranny / Rochester Quadrajet Carb
www.nikothenomad.blogspot.com
Re: Core Plug Sealing [Re: nikothenomad] #736770
May 29th 2018 4:57 pm
May 29th 2018 4:57 pm
Joined: Jun 2010
Posts: 14,227
Van Diego California
frscke1 Offline
frscke1  Offline

Joined: Jun 2010
Posts: 14,227
Van Diego California
A good mix of coolant will take care of that ....If you run a more water mix it will rust faster. At least 50-50.


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Core Plug Sealing [Re: nikothenomad] #736774
May 29th 2018 7:47 pm
May 29th 2018 7:47 pm
Joined: Nov 2013
Posts: 3,352
Michigan
Dyno_Dave Offline
pooh-bah
Dyno_Dave  Offline
pooh-bah
Joined: Nov 2013
Posts: 3,352
Michigan
Those plus can be had in brass. End of the corrosion problem.

I've been known to put a coat of copper seal on edge of the plug, to help assure sealing against the block.

Re: Core Plug Sealing [Re: nikothenomad] #736826
May 31st 2018 8:44 am
May 31st 2018 8:44 am
Joined: Jun 2010
Posts: 1,030
USA
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nikothenomad Offline OP
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nikothenomad  Offline OP
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USA
frscke.... thanks. that is what i have been reading - that the issue is with water not the coolant and the correct mixture is the key. i don't know what was done before we got her but after the new plug is in it will be all 50/50.

dyno... thanks. i've heard about the brass but will stick with steel and go with a correct mixture of coolant.


Nicole
1988 Dodge B250 5.9l 360 Ram CamperVan / 727 Tranny / Rochester Quadrajet Carb
www.nikothenomad.blogspot.com
Re: Core Plug Sealing [Re: nikothenomad] #736858
June 01st 2018 10:08 am
June 01st 2018 10:08 am
Joined: Jan 2001
Posts: 2,170
Kellettville, PA
M
Meanmachine Offline
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Meanmachine  Offline
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Joined: Jan 2001
Posts: 2,170
Kellettville, PA
The old-timers use to say to dump a pint of automatic transmission fluid in the cooling system to help with rust and keep the heater core from plugging.

Re: Core Plug Sealing [Re: nikothenomad] #738392
July 18th 2018 3:03 pm
July 18th 2018 3:03 pm
Joined: Jan 2018
Posts: 21
Florida
7
72vanman Offline
stranger
72vanman  Offline
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Joined: Jan 2018
Posts: 21
Florida
Another remedy along with using brass freeze plugs ( that is what they are called, but the openings were part of the casting process), distilled water should be the only water along with coolant used in the cooling system to avoid corrosion issues with the radiator and other internal surfaces in the motors and other paths of the coolant.

Re: Core Plug Sealing [Re: nikothenomad] #739792
August 25th 2018 10:13 pm
August 25th 2018 10:13 pm
Joined: Jun 2010
Posts: 1,030
USA
N
nikothenomad Offline OP
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nikothenomad  Offline OP
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Joined: Jun 2010
Posts: 1,030
USA
Just realized I don't know that I updated what all went down with the replacement of the core plug. Here's the link to the blog post we did about it... Been another few thousand miles since then and so far all is good....

http://nikothenomad.blogspot.com/2018/06/annie-turns-30.html



Nicole
1988 Dodge B250 5.9l 360 Ram CamperVan / 727 Tranny / Rochester Quadrajet Carb
www.nikothenomad.blogspot.com

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