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Tough week for electricity | 20 comments (20 topical, editorial)

Re: Tough week for electricity (3.00 / 0) (#13)
by Countryboy on Sat May 3rd, 2008 at 02:16:43 AM MST
(User Info)

Automotive engine blocks have freeze plugs for a reason. If the engine coolant freezes, it pops out the plugs instead of cracking the block.

You might want to drill a hole in the side of the cover plate you made and install a freeze plug. If you forget to drain the water again, you'll only need to reinstall another freeze plug.

I've even seen reusable freeze plugs too. The ones with the thick rubber between two steel washers. Tighten the bolt going through it, and it squeezes out the rubber to fit the hole.

Re: Tough week for electricity (3.00 / 0) (#16)
by dbcollen on Sun May 4th, 2008 at 01:59:41 PM MST
(User Info)

They are for some reason called "Freeze Plugs" while in fact they are the holes needed to remove the sand left inside the block from the casting mold. "freeze plugs" will not save an engine block from cracking when they freeze.

Dustin
Mad River Wind and Hydro
[ Parent ]

Re: Tough week for electricity (3.00 / 0) (#17)
by Ungrounded Lightning Rod on Sun May 4th, 2008 at 10:26:43 PM MST
(User Info)

That's part of what antifreeze is about: When the solution finally does freeze and expand it at first forms a slush that is flexible enough that it will often push out the freeze plug rather than crack the block or head. (Pure water, of course, will form a hard ice block that doesn't flex well enough to avoid cracking the castings.)

[ Parent ]

Tough week for electricity | 20 comments (20 topical, 0 editorial)

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