yes. in most cases a threadcert such as a helicoil will produce a stronger thread than the original tapped hole. the thing i would be worried about with a 'cert in a head would be having to oversize the hole to get it in, and possibly running into a water jacket or something.

Can you helicoil a cylinder head?

In fact, it may be possible to simply chase the old threads with a tap and clean them up. Or, as illustrated, you can insert a Helicoil. ... When a spark plug has had a chance to marry a cylinder head for 100,000 miles, it's not uncommon for the aluminum threads to come out of the head with the plug.

Are helicoils used to repair a damaged bolt?

We can Re-thread bolts and screw holes using helicoil kits, for numerous parts and machines. Spark Plug: We may need to rethread the spark plug hole, especially when it has been left in the cylinder for years, which can cause the spark plug to bond to the head.

What is better than a helicoil?

Time Sert inserts for head bolt applications are much thicker than the Helicoil brand. They are more like a solid metal bushing which is threaded on the inside and out. The Time Sert brand insert is installed with a special driver.

Can you install a helicoil without tool?

Yes, the helicoil insert requires a special tap. The insert can be installed without the tool with some jockying. Invariably, if you do not purchase the entire helicoil set, something else will break that's the same size bolt.

How To Install A Helicoil On Cylinder Head Bolts:BMW X5 M54

Can you Retap aluminum?

Sure. You don't want loose or cross threading bolts to be used to secure anything. Just drill out the existing hole to the desired size, retap, and run in your new locking bolt. It's a done deal.

How does a HeliCoil stay in?

HeliCoils do not require thread sealants or thread locker in order retain the insert, but if you feel the need to use sealant or thread locker, a light coating may be applied to the outer threads, making sure the inner threads are clean. Once installed, HeliCoil inserts are very reliable and trustworthy.

Are HeliCoil taps different?

Can a standard tap be used instead? Once installed, the internal threads of the HeliCoil insert are designed for use with standard sizes of fasteners. ... An STI tap is different than a standard fastener thread tap; they can not be used interchangeably. To illustrate the difference between a standard tap and an STI tap...

Are helicoils strong?

If a thread is "static" i.e. not likely to be done up and undone more than a few times in its lifetime, we would always say a helicoil type thread is the strongest option. ... There is not a lot of difference in strength between a Time-Sert and a wire STI and both protect soft alloys from stripping.

Can helicoils be reused?

Registered. Helicoils are made as a cheap repair or to strengthen holes in soft metals in the manufacturing process. They were intended to hold a fastener but not for reuse! Meaning the helicoil will not survive the fastener being removed and reinstalled more than a few times.

Can helicoils be torqued?

Generally though Helicoil inserts should be a bit stronger than the original thread. You should be able to use the same torque settings as original.

What is Max locking torque?

The locking torque (page 9) is just how hard the helicoil resists letting the screw vibrate loose. Max locking torque on the first cycle is shown as 26 in*lbf (1.6 N*m), but that won't strip it. The aluminum threads will strip first even though they're bigger because they're that much weaker than the steel helicoil.

How much does it cost to install a HeliCoil?

If the install/setup is more difficult or risky, the price can go up. If it's a normal shop, I've seen prices of $10 to $50 per hole, depending on circimstances. If several of the same size are installed, the price sometimes goes down.

Can you use HeliCoil aluminum?

The soft nature of aluminum allows threads to pull from their base material when under the strain and pressure of an operating engine. ... An installed HeliCoil threaded insert provides a secure threaded connecting point for accessories on engines with aluminum heads.

Is helicoil stronger than original threads?

Most aluminum aerospace parts that have threads will call for Helicoils. You are very correct with that statement and hence Eddies comment on it being stronger. The original threads are cut into the aluminum case. A properly installed steel helicoil is far stronger.