Stripped Spark Plug Threads

[Snowfish]

I need to repair a stripped spark plug thread. Has anyone use the Time-Sert inserts. They appear to be more solid than HeliCoil.

I'd prefer not to remove the head, but if that's the only option, so be it.

 

[Rscardina]

Re: Stripped Spark Plug Threads

Ive never used that system to retap threads,,but i will give you my own opinion in this anyway..

in my I/o I ALWAYS took the head off when i ran into that issue,,but it olny happend twice for me.. I'm not a fan of any metal dropping going into the engine..so I will always took it off.

some may tell you its ok to do in place, but ill let them tell you..

On my V4 outboard I do them in place becasue they are vertical in position..

Good luck!

 

[zbnutcase]

Re: Stripped Spark Plug Threads

I frankly never had good luck with any plug thread insert, and unless its rare and valuable, i just replace the head anymore. And inserts are GREAT for interfearing with the heat travel of the plug.

 

[Rscardina]

Re: Stripped Spark Plug Threads

Time sert boast the "over the fender" application whihc says you do not have to remove the head...

i imagine you still have to drill out to fit...so I stand with my original call of taking the head off...but its up to you..the product says it can be used that way..

 

[Big Boat Bay Buster]

Re: Stripped Spark Plug Threads

I used a time-sert kit to repair a blown out sparkplug on my FORD truck. When it blew it completely striped out the threads.
I could not be more impressed with how well it worked. Definitely a permanent repair!!! You don't have to remove the head, use grease on the tools to hold the shaveings.
Down side is the kit can be expensive.
Highly recommended
Chris