How To Removing Broken Exhaust Manifold Bolt From Aluminum Head

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How do you remove a seized aluminum bolt from stainless steel?

Lots of penetrating oil and take your time – soak it good, wait, soak it again, wait, soak it again. Then heat the ALUMINUM as quickly as you’re able (aluminum expands more than stainless when heated) and attempt to tighten it to see if you can break it free. If you fail at the first attempt more soaking is in order.

How do you loosen seized aluminum threads?

Get as much of a sodium hydroxide solution as possible into the thread assembly and slowly loosen the nut. However, the solution is very corrosive and will cause alkali burns, so be careful. Another suggestion is using a box-end wrench of the appropriate size and applying just enough force to put the bolt in tension.

Can you heat up aluminum to remove bolt?

Heat the corroded bolt by placing the neutral flame of the oxy-acetylene torch 3 to 4 inches away from the head of the bolt. Aluminum will draw heat from the bolt, so you will need to heat the bolt longer than a standard carbon bolt.

Does vinegar clean aluminum?

Vinegar is an effective resource to clean aluminum. Mix one part white vinegar to one part water to create an acidic solution. The solution can then be used in different ways depending on the object being cleaned. To clean and shine an exterior, dip a cloth into the mixture and scrub the object clean.

Should I heat a stuck bolt?

Torch Your Stuck Bolt

Put the flame directly over the stuck part, or the part you can get to safely. Heat it for 30 seconds or so and it should free up easily. If it doesn’t, repeat the process to see if that helps. Repeated heating and cooling sometimes does the trick.

soak it some more, see

How do you free seized aluminum parts?

You could try some aluminum wheel cleaner, but normally it will not have as much strength as the toilet cleaner. Spray or pour it on. let it set, then maybe tap the parts with a small hammer, spray / soak it some more, see if it takes it in, if it does spray / soak some more and keep trying.

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