Thread insert

[ILLF8ED]

When a helicoil fails this is what’s next. I had to put a thread insert into the cylinder head on my ‘72 combat. I did it by hand very slowly and carefully to make sure it was in line with the other two studs. It fits onto the cylinders, so tomorrow I’ll assemble it.

 

[z3ro]

Is that a time sert?

 

[850commando]

You did all three, right? thats one job i passed of to the MAN... JComstock.

 

[ILLF8ED]

You did all three, right? thats one job i passed of to the MAN... JComstock.

Just did one. The one on the other side in front was done by Phil Radford years ago. The one in the back is still original threads.

 

[ILLF8ED]

Is that a time sert?

These are called E-Z Lok.

 

[z3ro]

What is your opinion of the threaded insert? I’ve only ever done helicoil because they are readily available in my area but in my mind the threaded insert would be a better repair

 

[Eldert]

if a helicoil fails you can put in a big sert . its the same thing as a time sert only
the outside diameter is bigger .

Eldert

 

[jbruney]

I've used those a good number of years ago, though not in this application, and if installed properly they are truly the squeezings & hold anything you'll ever dream of..... Never cared for helicoils though. First I was around these was late 70's-early 80's and believed they fell from Heaven.... Perhaps....

 

[SteveA]

I've used those a good number of years ago, though not in this application, and if installed properly they are truly the squeezings & hold anything you'll ever dream of..... Never cared for helicoils though. First I was around these was late 70's-early 80's and believed they fell from Heaven.... Perhaps....

I hope they don't fall from anywhere

 

[jbruney]

They're tough sure enough and should hold well on the head.

 

[850commando]

These are called E-Z Lok.
View attachment 78916

interesting ; they offer different thread OD. for the same id.

i would still do the third one now before you button it up.

 

[Onder]

Absolutely.

 

[gortnipper]

What is your opinion of the threaded insert? I’ve only ever done helicoil because they are readily available in my area but in my mind the threaded insert would be a better repair

 

[z3ro]

Ha! I would have lost money on that bet

 

[jbruney]

Don't go feeling all lonely.

 

[gortnipper]

Thread inserts in the Norton head (2019)

Here I have tested 4 common inserts used in the Norton head. These inserts were all 1/2 inch long. They all fit a 3/8-16 stud.

www.accessnorton.com

 

[ILLF8ED]

interesting ; they offer different thread OD. for the same id.

i would still do the third one now before you button it up.

I’m of the if it isn’t broken don’t fix it mindset.

 

[Onder]

It will be. Like mine...