What happens if the water in your car freezes?
Water freezes at 32 degrees F, or 0 Celsius. Unlike most liquids, water expands when it freezes. Since an engine block is not flexible, the expansion can actually crack the cast iron or aluminum block of the engine, ruining the engine. The same principle is at work when water pipes freeze in the winter.
What does a freeze plug do on a car?
Freeze plugs are usually aluminum or brass plugs pressed into holes in the water jacked of your engine block. In some cases, as the water freezes and expands in your block, the freeze plugs will push out relieving the pressure of the freezing water and partially draining your cooling system.
What happens when water freezes in engine block?
If water freezes inside your engine block, it can expand and crack the block, destroying the motor. Freeze plugs (or expansion plugs) will “pop out” and supposedly prevent this. In reality this doesn’t work all the time: I’ve seen MANY blocks destroyed by cracking without the freeze plugs popping out, or if they do pop out the block cracks anyway.
Is the freeze plug blow out on my MerCruiser?
I have a 4.3 mercruiser, and the one freeze plug on the lower port side is blow out, None of the others have moved, and there is no visible damage on the outside, and the boat runs fine except for the water running out where the freeze plug should be. I have checked the oil and there is no water in it.
How big is a freeze plug on an engine block?
If you look on the side of an engine block you will see a line of circular depressions about an inch and a half in diameter and about a quarter of an inch deep. These are actually holes in the side of the engine block which are plugged with a dish shaped metal plug called a “freeze plug” or “expansion plug”.
How to replace a leaking freeze plug with engine in the car?
Replacing a leaking freeze plug with engine in the car! – YouTube Replacing a leaking freeze plug with engine in the car! If playback doesn’t begin shortly, try restarting your device.
What are engine block freeze plugs?
Freeze plugs are usually aluminum or brass plugs pressed into holes in the water jacked of your engine block. In some cases, as the water freezes and expands in your block, the freeze plugs will push out relieving the pressure of the freezing water and partially draining your cooling system.
If water freezes inside your engine block, it can expand and crack the block, destroying the motor. Freeze plugs (or expansion plugs) will “pop out” and supposedly prevent this. In reality this doesn’t work all the time: I’ve seen MANY blocks destroyed by cracking without the freeze plugs popping out, or if they do pop out the block cracks anyway.
I have a 4.3 mercruiser, and the one freeze plug on the lower port side is blow out, None of the others have moved, and there is no visible damage on the outside, and the boat runs fine except for the water running out where the freeze plug should be. I have checked the oil and there is no water in it.