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locktite product for spark plug timesert?

Discussion in 'Norton Commando Motorcycles (Classic)' started by Douglass Harroun, Mar 13, 2019.

  1. Douglass Harroun

    Douglass Harroun

    Joined:
    Sep 12, 2008
    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
     
  2. swooshdave

    swooshdave

    Joined:
    Apr 15, 2009
    It should have locked into the hole, do you know why it didn't?
     
    MexicoMike likes this.
  3. Douglass Harroun

    Douglass Harroun

    Joined:
    Sep 12, 2008
    I didn't install it. It comes out after plug torqued ( not excessively), firmly atached to plug. Threads in head look good
    Doug
     
  4. Douglass Harroun

    Douglass Harroun

    Joined:
    Sep 12, 2008
    I didn't install it. Insert comes out firmly attached to plug. Plug is not excessively torqued
    Doug
     
  5. kommando

    kommando

    Joined:
    May 7, 2005
    640 is high temperature but up to 24 hours to cure.
     
  6. htown16

    htown16 VIP MEMBER

    Joined:
    Apr 29, 2009
    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?
     
    swooshdave likes this.
  7. Douglass Harroun

    Douglass Harroun

    Joined:
    Sep 12, 2008
    Looks like the one on left
    Doug
    [​IMG]
     
  8. Time Warp

    Time Warp .......back to the 70's. VIP MEMBER

    Joined:
    Dec 3, 2012
    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.
     
  9. eskasteve

    eskasteve VIP MEMBER

    Joined:
    Sep 24, 2012
    Doug, I've used Loctite 263 for a similar problem on my 66 VW. It was still doing the job 25,000
     
  10. htown16

    htown16 VIP MEMBER

    Joined:
    Apr 29, 2009
  11. MexicoMike

    MexicoMike

    Joined:
    Jan 31, 2010
    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.
     
  12. htown16

    htown16 VIP MEMBER

    Joined:
    Apr 29, 2009
    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.
     
  13. Dommie Nator

    Dommie Nator VIP MEMBER

    Joined:
    Apr 2, 2013
    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?
     
  14. htown16

    htown16 VIP MEMBER

    Joined:
    Apr 29, 2009
    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.
     
    Dommie Nator likes this.
  15. Gilesy

    Gilesy VIP MEMBER

    Joined:
    Aug 27, 2017

    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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