locktite product for spark plug timesert?

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Douglass Harroun

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Have a timesert that backs out of a spark plug hole. Many products are available, different heat ranges. Could I get advice which one to use? (510, 272, 2422, etc)
Thanks
Doug
 
I didn't install it. It comes out after plug torqued ( not excessively), firmly atached to plug. Threads in head look good
Doug
 
Are you sure it's a Time sert insert and not a Helicoil insert. Does it have a pronounced lip on the top to seat against the head? Helicoil makes inserts plus the wire thread type. I've had bad luck with the Helicoil inserts. Picture?
 
Looks like the one on left
Doug
locktite product for spark plug timesert?
 
Based on what Jim Comstock has posted that insert must be close to the valve seat.
I never had much luck with 'gluing inserts into spark plug holes, the last (Ducati) were replaced with one that had some form of drive pins to secure them. (in the 1990's)

JC has a great video of his inserts being installed.
 
Doug, I've used Loctite 263 for a similar problem on my 66 VW. It was still doing the job 25,000
 
htown16 said:
This is the Helicoil insert I was talking about not the wire insert. Pure junk. I used a time sert big sert to replace it when it came out with the plug. Yep, It's right up against the valve seat but couple thousand miles on it with no problems so far.
https://www.jpcycles.com/product/361-825/helicoil-sav-a-thread-spark-plug-insert
Click to expand...

That is not a Heli-Coil. I've used a ton of Heli-Coil brand inserts over the years, as does the aviation industry, and never had one fail. Looks to me like that company is using "helicoil" as a generic term and trying to pass a crap insert off as a Heli-Coil. For spark plugs, Heli-Coil make a specific coil: https://www.stanleyengineeredfastening.com/product-brands/heli-coil.
 
You are right Mike. I did a little investigation and Stanley does not make those. However, a number of aftermarket autoparts suppliers do and use the term "heli-coil". You will see them in most chain autoparts store and they are complete shite. Just warning anyone against using them.
Time cert recommends high temp, high strength red loctite. It even came in the kit I had. Loctite 272 is what you want, good to 450 degrees F. I've measured head temps a number of times in area around sparkplug. Hottest I've ever seen is 350 degrees F.
 
Just a quick question regarding the timeserts, I've put a couple in my head and as they are steel not aluminium is it wise to drop a number in the sparkplug heat range?
 
I'm running NGK 8's in both sides with an insert in the right. Both plugs have fairly identical coloring. For some reason the left side actually looks a spot hotter.
 

I had the same issue. The guy who did it for me forgot to screw the insert tool through the insert, opening up the lower part formed threads. No need for Loctite.
 
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