As above, and also will they torque up as per the original bolt/ thread?

Thanks.

How

 

found helicoil to be reliable when i have used it in the past,although not on bolts that require high torque.
i suppose it all depends on what you intend to use it for,i dont think i would use it for stuff like head bolts etc

 

I bought some old AP Calipers that had the bleed nipple thread helicoiled i didn't trust it so had it redrilled and proper insert put in. It may have perfectly sound but i don't like taking chances with brakes on a 160mph car.I 2nd what johnny said it basically depends on where you are going to use them.

 

Don't use helicoil for anything that requires a bit of torque.

Time-Serts are what you want. I have used these on cylinder heads, crankcases, and even some Bespoke brake brackets before now.

Properly installed they are as strong as the parent metal, more so if it is Ally.

++ TIME-SERT Threaded inserts threaded for stripped threads, threaded inserts, thread repair , stripped sparkplugs, sparkplug blowouts, threaded inserts threaded, repair stripped threads, stripped threads, inserts threaded inserts.

 

Time-Serts are very good however i see nothing wrong with Helicoils at all.

Helicoils are generally much much stronger than the original fastener anyway.

 

They relax under torque. Go back to something a couple of hours later you have torqued to a fair rate and check it.

 

Do they keep relaxing or will they retain their torque once re-tightened?

How

 

Is this only in ally or when mounted in all materials?

 

Definetly in Ally, not checked in steel or cast iron TBH.

 

The Bentley 6.75 engine is helicoiled throughout as PROPERLY helicoiled is more robust than using the parent aluminium for the thread.

Simon

 

We use helicoils all the time in work ranging fromm M10 to M24. Never had a problem with torque issues.