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How do you fix stripped threads in an engine block?
I’m trying to do maintenance on my car and just found out I have stripped threads in my engine block. I’ve never had to deal with this before, so I’m not sure what to do. How can you fix stripped threads in an engine block?
Emily Maracle · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Stripped threads are common, so try not to take it too hard! Thankfully there are several ways to fix stripped threads. Some common methods you can use to fix stripped threads are:
- Threaded insert kit. A threaded insert kit allows you to enlarge the stripped hole with a specialized drill bit, allowing you to put in a threaded insert. Most kits also come with adhesive to ensure the new thread insert locks into place.
- Epoxy. You can use epoxy to fill the damaged hole. Before it sets, you’ll want to screw a bolt into it, forcing the epoxy into the previous threads. Once set, you’re good to go.
- Drill a larger hole and tap it. In some instances, you can use a drill to expand the hole and then use a tap to create new threads. Typically, this will increase the size of your fastener or bolt by one or two sizes.
If you feel overwhelmed by the choices, don’t be afraid to contact a mechanic!
Basic car maintenance
may be easy, but drilling into your engine block isn’t always so simple. If you end up having to see a mechanic for rethreading, consider offsetting the repair costs with the
Jerry
app. Once you download Jerry, answer a handful of questions that will take you roughly 45 seconds to complete and you’ll immediately get car insurance quotes for coverage similar to your current plan. Jerry customers save an average of $887 a year. View full answer
- Gregory R.
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Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.
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