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Heli-coil kit for stripped spark plug hole 13 Sep 2023 11:31 #889346

  • daveo
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The M14 x 1.25 Time Sert kit I purchased used last year off ebay:



1982 KZ1100-A2

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Heli-coil kit for stripped spark plug hole 13 Sep 2023 12:03 #889347

  • Kelly E
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Whoa dude, you might want to delete that one.
The Rust Bros. Garage Collection
1974 Honda CB 550 K0
1975 Honda CB 400F Super Sport
1977 Kawasaki KZ 1000 LTD
1980 Suzuki GS 1100E
1981 Suzuki GS 1100E
1982 Honda CB 900F Super Sport
1983 Honda CB 1100F
1984 Honda Sabre 700
1984 Honda Interceptor 1000
1994 Kawasaki ZG 1000 Concours
And more
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Heli-coil kit for stripped spark plug hole 13 Sep 2023 12:11 #889348

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Whoa dude, you might want to delete that one.

Had to use my wife's laptop to do it. 

Probably not a good idea to copy/paste images from past forum posts...which is what I initially did.

Whew!   

1982 KZ1100-A2

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Heli-coil kit for stripped spark plug hole 13 Sep 2023 12:38 #889350

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That's definitely the "gold standard" of insert kits 

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Heli-coil kit for stripped spark plug hole 13 Sep 2023 13:37 #889352

  • SWest
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Whoa dude, you might want to delete that one.

Why delete it?
 

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Heli-coil kit for stripped spark plug hole 13 Sep 2023 14:26 #889353

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Steve, I reposted the image from my phone after attempting to copy/paste it from a previous KZR post on the subject.  That method produced a mile of illegible code that took several edit attempts to delete.

1982 KZ1100-A2

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Heli-coil kit for stripped spark plug hole 13 Sep 2023 14:45 #889354

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GOTCHA 

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Heli-coil kit for stripped spark plug hole 13 Sep 2023 15:00 #889355

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Maybe it doesn't matter, but Timeserts are thicker and have more mass than a small insert like a helicoil.  I've read that they can affect heat transfer through the plug.  They sell aluminum Timeserts, and I wonder if those would be a better option for an air cooled motorcycle?  

 
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Heli-coil kit for stripped spark plug hole 13 Sep 2023 16:20 #889356

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Maybe it doesn't matter, but Timeserts are thicker and have more mass than a small insert like a helicoil.  I've read that they can affect heat transfer through the plug.  They sell aluminum Timeserts, and I wonder if those would be a better option for an air cooled motorcycle?  


 
An interesting point Ed but I would come back to my original question, the OP said the 14mm coil was way to big and to be honest in the picture at least, that looks like a 12mm plug next to the 14mm coil to me. If that is the case it's no wonder it blew out 
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Heli-coil kit for stripped spark plug hole 13 Sep 2023 18:29 #889360

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1982 KZ1100-A2

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Heli-coil kit for stripped spark plug hole 17 Sep 2023 19:10 #889479

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Went with a NAPA-sert and a tap, so far so good!! Much thanks!
1982 KZ1100D1

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Heli-coil kit for stripped spark plug hole 22 Sep 2023 15:33 #889647

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I repaired with wurth many years ago works perfect since…

eshop.wurth.co.uk/Product-categories/Spa...3108.cgid/en/GB/GBP/

wurth timeinsert is using High thermal conductivityCopper coating
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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