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freeze out plugs are metal plugs in the block and heads of your engine. they are are there if the coolant was mixed wrong with to much water and the vehicle freezes they will pop out allowing expansion of freezing liquid hopefully saving the engine

Part 2: You will see these called freeze plugs, casting plugs, welsh plugs and probably other terms. The holes they plug are part of the cylinder block casting process to allow molten steel/iron/aluminum to rapidly flow into the block casting mold. The fact that they will pop out if the coolant in the engine freezes can be serendipitous but in most cases the plugs go bad due to galvanic action: the steel plugs installed at the factory are dissimilar to the engine block metal and will start to corrode (rust) and will start leaking after a while. This is why most antifreeze manufacturers claim they have anti-corrosion protection; it is also why 99% of replacement plugs are brass. Three points to remember: 1) before replacing plugs do your research and find out EXACTLY how many plugs your engine has and where they are. 2) if you have to replace one plug, replace them all. 3) if you are rebuilding an engine it is cheap insurance to replace the plugs.

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โˆ™ 2011-10-28 11:31:16
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Q: What is a freeze plug?
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What is a better type of freeze plug?

The steel freeze plug is better than a brass freeze plug. This is because the steel freeze plug can withstand high temperature from the engine block. Moreover, the steel freeze plugs usually fit very well.


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How do i change the freeze plug on driver's side on a 2.8 v6 engine on a 1988 ford bronco 2 xlt?

Locate the bad freeze plug and remove parts that impede the facilitation of reaching the plug. Take a screwdriver and hammer out the old plug. Replace the plug with either a regular plug (a socket that fits the inside of the freeze plug helps) or a rubber expanding freeze plug.


How do you replace a freeze plug in a 1995 Ford Aerostar?

take a large screw driver and a hammer tap the old freeze plug in the block,replace it with a rubber freeze plug.tighten the rubber freeze plug with a wrench..the metal freeze plug that you pushed inside the block will not hurt anything..hope this helps!!!!


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Steel or brass freeze plugs are the best ones,rubber freeze plugs are just for temporary


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Expansion plug, or core plug.


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With the freeze plug out it will be impossible to keep water and coolant in the engine as it will all leak out through the freeze plug hole. The engine will over heat and self destruct after a while.


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The 2006 Chevy Trailblazer passenger side rear freeze plug is located near the back of the engine block. The freeze plug will be near the bottom of the engine block.


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How much would it cost to replace a freeze plug on a 1993 cutlass?

It would depend on which freeze plug. Some are easy and some are not.


What size are freeze plug?

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What is the size of 351 windsor block freeze plug above starter. I know that is a its a npt pipethread?

If it is a freeze plug it would not have threads. Freeze Plugs are designed to pop out of the block should the water in the block freeze. This could not happen if the plug was threaded. Hope This Helped.


What will happen if a freeze plug blows out?

The engine will leak out coolant/antifreeze from the freeze plug area. Freeze plugs can be replaced, it may take a lot of work to replace one but they are made to be replaceable. It is not advisable to drive any vehicle with a blown freeze plug.


Will a bad freeze plug prevent car from starting?

A bad freeze plug will leak coolant and cause the engine to overheat.


How do you install an engine block heater 2004 Chevy trail blazer V6-4.2L?

First check and see if there is a pouch located directly beside your battery. If there is a pouch it will contain a plug that is for the factory engine block heater. If there is no plug then you can pursue an aftermarket type. There are several types. If you want to use a freeze plug block heater, you'll need to have someone help you remove a freeze plug. That usually requires that you remove a lot of the peripheral equipment until you can get a clear access to one of the freeze plugs. Measure the freeze plug then go to an auto parts store and purchase a freeze plug block heater of that specific size. Once you have one that will fit into the hole, you can drill a hole in the freeze plug, then use a prying instrument to remove the old freeze plug. The block heater freeze plug usually goes in with a nut to tighten the freeze plug into the hole. BTW, you'll get a lot of antifreeze all over when you do this, and plan on taking your time since it will be time consuming.


How do you fix a freeze plug leak on a 1988 wrangler when sealant wont work?

Pull the old freeze plug, clean up the hole, press in a replacment. Unfortunately you may need to remove a lot of peripheral stuff to get to the freeze plug.


Can the freeze plug be re-used?

Do not attempt to reuse a freeze plug. They are pressed in to make a tight seal and will not seal properly if reused.