How to Seal a Thermostat Housing With a Broken Bolt

If a bolt on your thermostat housing is broken, you can seal the housing by using a product like JB Weld. First, clean the surface around the break with a wire brush. Then, mix the JB Weld according to the instructions and apply it to the break.

Let it dry for at least 24 hours before adding any coolant or oil to avoid damaging the repair.

  • If the thermostat housing has a broken bolt, remove any debris from the area around the bolt
  • Apply a generous amount of sealant to the area around the broken bolt
  • Place a piece of tape over the sealant to hold it in place
  • Wait for the sealant to dry completely before continuing to use the thermostat housing

Will a Thermostat Housing Hold With One Bolt

It’s a common question – will a thermostat housing hold with only one bolt? The answer is maybe. It all depends on the particular circumstances of your engine and how well the gasket sealing surfaces are machined.

If you have an aftermarket aluminum housing, it’s likely that the threads will be fine and the housing will seal well enough to use only one bolt. However, if you have an older engine with cast iron housing, it’s possible that the threads may not be in good condition and the housing may not seal properly, in which case using only one bolt is not advisable. In any case, it’s always best to consult your mechanic or repair manual before making any decisions about changing fasteners on your engine.

How to Seal a Thermostat Housing With a Broken Bolt


How Do You Glue a Broken Bolt?

If you have a broken bolt that needs to be glued, the best thing to use is a strong adhesive. There are many adhesives on the market that will work for this purpose, but you want to make sure you get one that is specifically made for bonding metal. Once you have your adhesive, simply apply it to both surfaces of the broken bolt and press them together.

Hold it in place for a few minutes until the glue sets, then let it dry completely before using the repaired bolt.

How Do You Remove a Broken Bolt from an Aluminum Engine Block?

If you’re lucky, the broken bolt will be sticking out far enough that you can use a vise grip to remove it. If not, you’ll need to drill a hole into the head of the bolt. To do this, first center punch the head of the bolt to create a starting point for your drill bit.

Then use a small drill bit to make a pilot hole in the center of the punched mark. Once your pilot hole is started, switch to a larger drill bit and continue drilling until the diameter of the new hole is slightly larger than that of the broken bolt. Now it’s time to remove the broken bolt.

First, insert a screwdriver or another tool into the drilled hole and turn it counterclockwise until you feel resistance. At this point, stop turning and apply pressure to the screwdriver while simultaneously tapping on its handle with a hammer. This will help loosen up any corrosion or debris that may be binding up the broken bolt.

With some patience and perseverance, you should be able to back out the broken bolt using only these tools.

How Do You Remove a Broken Bolt Without an Extractor?

There are a few different ways that you can remove a broken bolt without an extractor. One way is to use a drill and a left-hand drill bit. Drill into the head of the bolt until it is flush with the surface.

Then, use a wrench to unscrew the bolt. Another way is to use a hammer and chisel. Place the chisel on the head of the bolt and strike it with the hammer until the head of the bolt breaks off.

How Do You Use Easy Out?

An easy out is a tool used to remove screws and bolts. It is also known as a screw extractor. To use an easy out, first drill a pilot hole into the head of the screw or bolt.

Next, insert the easy out into the pilot hole and turn it counterclockwise. The easy out will extract the screw or bolt from the hole.

Never Use A Broken Bolt Extractor & Drill. Here is A Better Method How Extract A Broken Bolt!


If your car’s thermostat housing has a broken bolt, don’t worry. You can still seal the housing and keep your car running smoothly. Here’s what you need to do:

1. Start by removing the broken bolt from the housing. Use a drill or an impact driver to remove the bolt. 2. Next, clean out the hole where the bolt was located.

Be sure to remove any debris or rust that may be present in the hole. 3. Once the hole is clean, apply a liberal amount of sealant to it. We recommend using silicone sealant for this step.

4. Finally, reinstall the thermostat housing onto your car’s engine block and tighten all of the bolts securely.

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