HarleyTechTalk

Technical Forums => General => Topic started by: alstar2 on September 07, 2021, 12:30:45 PM

Title: spark plug hole repair 88 bt
Post by: alstar2 on September 07, 2021, 12:30:45 PM
does anybody put in save a thread inserts with out removing the head & what do you use to lock it in,red locktite?
thanks Al
Title: Re: spark plug hole repair 88 bt
Post by: jmorton10 on September 07, 2021, 01:30:53 PM
I've put a helicoil into a buddies Shovel without removing the head.  Used red Loctite on it just to be safe.

~John
Title: Re: spark plug hole repair 88 bt
Post by: FSG on September 07, 2021, 01:43:02 PM
would a back-tap fix the thread or is it too far gone ?
Title: Re: spark plug hole repair 88 bt
Post by: alstar2 on September 07, 2021, 02:29:04 PM
have not seen it yet.it is coming today.someone has already looked at it & put the plug back in with red loctite
Title: Re: spark plug hole repair 88 bt
Post by: sandrooney on September 09, 2021, 04:59:49 AM
I put a  helicoil in my old shovelhead without removing the head, greased up the drill and tap to catch the shavings and got er done. Left the next day on a 7, 000 mile one month trip and had no issues with that.
Title: Re: spark plug hole repair 88 bt
Post by: tomcat64 on September 09, 2021, 05:57:02 AM
i used a tapsert on my old shovel, but it did remove the head first..
Title: Re: spark plug hole repair 88 bt
Post by: truck on September 09, 2021, 06:21:20 AM
How long will red Loctite work at operating temperature?
Title: Re: spark plug hole repair 88 bt
Post by: Norton Commando on September 09, 2021, 06:49:34 AM
I had a completely worn out spark plug thread on the head of my Norton.  I purchased a spark plug repair kit called Sav-A-Thread from OReillys; I think it's a Helicoil product. There's no drilling involved, which minimizes the amount of aluminum shavings.  You merely use the supplied tap to cut new threads in the spark plug hole and then install a threaded insert in its place. I put an ample coat of grease on the tap, worked slowly and cleaned off the tap and applied fresh grease often. The whole process was quite smooth and the end result was excellent!

Jason
Title: Re: spark plug hole repair 88 bt
Post by: Deye76 on September 09, 2021, 06:54:59 AM
Quote from: truck on September 09, 2021, 06:21:20 AM
How long will red Loctite work at operating temperature?

I would use Loctite Sleeve Retainer.
"Requires for the tightest fits, a press or puller to disassemble parts"
Title: Re: spark plug hole repair 88 bt
Post by: jmorton10 on September 09, 2021, 09:46:43 AM
I would use Loctite Sleeve Retainer.

Isn't that basically what red loctite is??

~John
Title: Re: spark plug hole repair 88 bt
Post by: JDhog211 on September 09, 2021, 10:14:43 AM
https://www.timesert.com/

I've used a time cert on my bike and it's a very strong and permanent
Install.
JD
Title: Re: spark plug hole repair 88 bt
Post by: Deye76 on September 09, 2021, 03:03:05 PM
Quote from: jmorton10 on September 09, 2021, 09:46:43 AM
I would use Loctite Sleeve Retainer.

Isn't that basically what red loctite is??

~John
Not even close.
Title: Re: spark plug hole repair 88 bt
Post by: chaos901 on September 10, 2021, 09:11:41 AM
I'd never heard of Sleeve Retainer so I looked it up.  I have had a need for this on occasion. 

Below is a description of what it does:
  - High temperature anaerobic adhesive that secures slip and press fit assemblies
  - Adds up to 3,000 psi holding power
  - Restores fit to worn or out-of-tolerance assemblies
  - Prevents surface corrosion
  - Works up to 400 degrees Fahrenheit
Title: Re: spark plug hole repair 88 bt
Post by: jsachs1 on September 10, 2021, 02:30:23 PM
Being in the business, I can't afford to have a comeback. A little time consuming, but 100% bullet proof, this is what I use. Head needs to be removed.
John

[attach=0,msg1394788]
Title: Re: spark plug hole repair 88 bt
Post by: Deye76 on September 10, 2021, 02:52:39 PM
"I'd never heard of Sleeve Retainer so I looked it up.  I have had a need for this on occasion."

years ago it was called bearing & sleeve mount or something like that. Green in color. I guarantee if you put it on a bolt thread, even with heat it wasn't coming out in one piece. I had a rigid frame that the back 2 bolts on the trans plate to frame always came loose, (it was that V shaped passenger peg mount that caused it) after using the green stuff, held forever. When I sold the frame, the trans plate came with it.