I always assumed tht a freez plug was found exclusively on Diesel Engines. Now someone is telling me that their freez plug on their car is broken. the thing is though that their car is a gasoline powered vehicle. Is this true what they are telling me?
2006-06-18 14:14:22 · 7 answers · asked by djbred18 3 in Cars & Transportation ➔ Maintenance & Repairs
The freeze plug is a round metal plug that is pushed into a hole in your engine block in any water cooled motor. It provides two benefits. It fills the hole created when the sand mold that creates the hollow water jacket which is suspended in the mold for the block, is removed from the cast block in the manufacturing process. There are several around the block because the sand mold for the water jacket needs to be very stable when the molten iron or aluminum is poured into the mold.
It also allows an emergency outlet for expanding ice that might break the block if it was confined to the block. If they are pushed put by ice, they have to be replaced or all the coolant will run out. Ice almost never forms in motors any more because the coolant in modern engines has antifreeze sufficient to protect it to sub freezing temperatures.
2006-06-18 14:50:43 · answer #1 · answered by the moose 1 · 4⤊ 0⤋
They really aren't "freeze plugs", they don't freeze, or really protect against freezing damage. They are "Expansion" plugs, or sometimes called "Welch" plugs. In the sand casting process, those hole are left in the block for sand removal, but more importantly, stress relief of the metal which eliminates cracking. They will push out if the coolant freezes sometimes, but may not. Most all blocks will have them including 2 stroke engines, cast iron and aluminum.
2006-06-18 21:53:46 · answer #2 · answered by br549 7 · 0⤊ 0⤋
these are all good answers. Take a class on how to build a motor at the local Vocational School and you will know more than what a freeze plug is. Or buy a chilton or haynes repair manual and study it for a while.
2006-06-18 21:58:36 · answer #3 · answered by fastsaf 3 · 0⤊ 0⤋
A freeze plug is a little round peace of metal that will pop out if your motor gets to cold to help keep it from freezing up and busting
2006-06-18 21:18:33 · answer #4 · answered by dl200558 5 · 0⤊ 0⤋
yes very true all engines have freeze plugs think of it as a weak point for ice expanding or pressure to go instead of cracking the block itself
2006-06-18 21:48:12 · answer #5 · answered by blue4x4jimmy 1 · 0⤊ 0⤋
Yeh, the biggest problem is getting to them. They sell replacements at the parts store. The cheap ones are just a big piece of rubber with a bolt in the middle and a plate on the end so it will expand when you tighten the bolt.
2006-06-18 21:38:06 · answer #6 · answered by jeff s 5 · 0⤊ 0⤋
A freeze plug is in all enginge (except air cooled) it pops is the wwater in the engine block freezes, Sometimes they rust and leak.
2006-06-18 21:17:58 · answer #7 · answered by Bill 6 · 0⤊ 0⤋