How To Install A Helicoil Youtube

Y'all are merely about finished with your most recent maintenance projection, i more commodities to tighten and…. dang it, wouldn't you lot know the threads just blew out in the cylinder head. You remove the commodities and it is coated with aluminum, which means that the threads in the head are stripped, not the commodities. Now you are in for piece of work. Stripped threads are rarely whatsoever fun, but they are a part of working on vehicles. If you only lost the top 1 or two threads, you can become by, simply if it goes any deeper than that, yous need to restore it. That's when knowing how to install a Helicoil insert comes in handy.

Fixing Stripped Threads

The components of a Helicoil kit are the inserts, a special tap and the installer too. You need to provide the drill bit for most kits. — The components of a Helicoil kit are the inserts, a special tap and the installer too. Yous need to provide the drill bit for near kits.

In this instance, a tap is not going to cut information technology, the threads are wasted and while y'all might be able to become a little bite with a tap, information technology won't last. The all-time bet is to repair the threads with a HeliCoil insert. A HeliCoil is a coiled threaded insert that installs into the function, providing the correct threads for the original fastener. There are several types of thread repair inserts, but the most common is the tanged insert. These inserts have a diamond-shaped cantankerous section with threescore-degree threads on the within and specially designed threads on the outer ring, which grips the walls of the hole.

HeliCoil Insert Types

The HeliCoil insert itself has special threads designed to grab the walls of the part, and the tang is there to help drive the insert into place. — The HeliCoil insert itself has special threads designed to grab the walls of the part, and the tang is there to assist bulldoze the insert into place.

Free running inserts are fully rounded inserts that are slightly larger than the hole they install in. When installed, they grip the walls of the hole through the spring-loaded action. This allows the fastener to easily install and be removed as well. These exercise not require any special staking or locking. Spiral locking inserts have a series of flat spots on the spiral threads, which put force per unit area on the fastener, belongings it in tight. They are reusable, and still maintain their grip on the fastener.

How To Install A HeliCoil Insert

Installing a HeliCoil insert requires drilling out the original hole to match the new coil, tapping the pigsty for the gyre, installation, and tang removal. Y'all can purchase the inserts individually or in kits. You demand a chief kit for the size of threads you are working with if you exercise not have a tap and dice ready.

Pro Tip – The proper installation depth of a HeliCoil insert is ¼-one/ii plough below the superlative of the original hole.

Remove the fastener from the pigsty. Inspect the pigsty and brand sure the threads are damaged. Apply a fiddling brake cleaner or compressed air to blow out the hole (remember to article of clothing eye protection).

The original hole in this aluminum windshield frame is not stripped, but it is not far from it. In order to stop a major problem from occurring, we decided to fix it with a HeliCoil. — The original hole in this aluminum windshield frame is non stripped, merely it is non far from it. In order to terminate a major problem from occurring, we decided to gear up information technology with a HeliCoil.

Using the correct size drill bit for the insert, drill out the hole. Make certain you drill to the end of the hole, only not deeper than necessary. Y'all don't want to punch through and impairment something on the other side (similar a water jacket or wiring harness).

The 3/8" kit we are using requires a 25/64" drill bit. We drilled out the hole, while ensuring that it was drilled square. — The 3/8″ kit we are using requires a 25/64″ drill bit. Nosotros drilled out the hole, while ensuring that it was drilled square.

Thread the new hole with the correct tap for the size of insert you have. These taps are not standard 60 caste thread taps, they are specific STI (Screw Thread Insert) tools. Dissimilar a standard tap, the threads are the same, but the diameter is slightly larger, yielding more grip for the insert.

Once the hole is cleaned out, the supplied tap was used to cut the new threads for the insert.

Here is where the process alters depending on the thread pitch of your fastener, coarse or fine.

Fibroid thread – Using the installation tool , mountain the HeliCoil insert to the tool, rotate the insert until the tang mates with the bulldoze notch on the tool. Thread the insert into the hole to the proper depth. Then remove the installation tool.

We are using a coarse thread insert, so the insert was installed onto the installer tool until the tang hit the stop. — We are using a fibroid thread insert, so the insert was installed onto the installation tool until the tang hit the stop.

Using the handle for the tap, we installed the insert. You can use a light thread locker, but it is not necessary, the insert is designed to hold itself in place. — Using the handle for the tap, we installed the insert. You can use a light thread locker, but it is not necessary, the insert is designed to agree itself in place.

Fine thread – Install the HeliCoil insert into the pre-coil tool. This tool compresses the insert to the correct size. Thread the install tool into the insert inside the pre-coil body. Spin the installation tool until it is fully threaded.

Hold the pre-coiled associates to the hole being repaired. Thread the installer tool so that the insert threads out of the pre-coiler and threads direct into the repaired hole until it reaches the proper depth and remove the installer tool.

At this signal, the insert is installed, but the task is not over. For all tanged inserts, the tang must be removed. Using a punch that fits snugly into the insert, place the punch into the insert until it reaches the tang. Hitting the punch with a hammer. This should pop the tang off. Utilise a magnet or tweezers to remove the tang.

Here you can see the tang. If it is at the bottom of the hole, you can leave it, but it is best to remove it in all cases. — Here you can see the tang. If it is at the bottom of the hole, y'all can exit information technology, merely it is best to remove it in all cases.

Using a non-tapered punch, the tang is knocked off. It should only take one or two pops. — Using a non-tapered dial, the tang is knocked off. Information technology should only take one or two pops.

The tang can be removed with a pair of needle-nose pliers.

HeliCoils practise not crave thread sealants or thread locker in order retain the insert, merely if yous experience the need to employ sealant or thread locker, a light blanket may be applied to the outer threads, making sure the inner threads are make clean. Once installed, HeliCoil inserts are very reliable and trustworthy. They have been used for loftier-performance applications under high stress, they perform very well in most situations.

Cheque out all the tools & equipment available on NAPA Online or trust one of our 17,000 NAPA AutoCare locations for routine maintenance and repairs. For more than information on HeliCoil thread inserts, conversation with a knowledgeable expert at your local NAPA AUTO PARTS store .

Jefferson Bryant View All

A life-long gearhead, Jefferson Bryant spends more than time in the shop than anywhere else. His career began in the motorcar audio industry as a shop manager, somewhen working his manner into a position at Rockford Fosgate as a product designer. In 2003, he began writing tech manufactures for magazines, and has been working every bit an automotive journalist always since. His work has been featured in Auto Craft, Hot Rod, Rod & Custom, Truckin', Mopar Musculus, and many more. Jefferson has also written 4 books and produced countless videos. Jefferson operates Red Dirt Rodz, his personal garage studio, where all of his mag manufactures and tech videos are produced.