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Spoon Sports

Spoon ... 2/7/2012

1993 Honda Civic Si 4 Cyl 1.6L

Engine

Why are freeze plugs needed? I mean, why dont we just cover those holes up with something so there are no leaks?

Why are freeze plugs needed? I mean, why don't we just cover those holes up with something so there are no leaks?
I know what freeze plugs are for but why do we need them? What if i just fill the holes up with sheet metal or something, weld it and forget about it.
Yes, i have replaced freeze plugs in other cars but it made me wonder...
Tried googling it but all i got are the answers i already know.
Thanks

2 Answers


HouseCallAuto

HouseCallAuto 2/7/2012

The answer is in the name Spoons. If the coolant / water in the block were to freeze to ice, the expansion of the liquid as it turns to ice would fracture an engine block, whereas if there is a "freeze plug" that can "pop out" as it is pushed against by ice, the integrity of the engine block is protected. I can honestly say I have experienced seeing this exact condition once many many years ago where several freeze plugs jettisoned from some car that had a severe overheating issue and then I discovered all the empty holes filled with ice.

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Spoon Sports

Spoon Sports 2/8/2012

Thanks Master, so technically, me living in a tropical area will not really be of a problem right?

Awesome hehehe

Thanks...jettisoned huh, scary

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Spoon Sports

HouseCallAuto 2/8/2012

Is Tokyo tropical? Mount Sinai right now about 40 F.

Spoon Sports

Spoon Sports 2/10/2012

Weather is a state of mind hahaha

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