In search of thread chaser for plug holes.
I'm looking at the Lisle 20200... Thoughts?
I've been getting some Honda GXs that the spark plug is a little tough going in. Rather not use a tap.
#2
Hammermechanicman
I have that tool. Seems to work fine. Just need to be careful to start it straight, just like a tap
Scrubcadet10 I was an automotive repair business owner for over 30 years, and I used the tool you are asking about since they first came out. I always had very goog luck with it but be sure to clean out cylinder after using it just in case something gets in there. I used to bring that cylinder up near TDC then blow it out with air after chasing holes. Another thing if you get something in there that won't blow out use a little grease on end of screwdriver or something and pick up the pieces as needed. Now days I use WD40 for cutting aluminum on my mill so may be helpful on the plug holes as well didn't know that years ago. As posted be sure to start the tool straight and it will be fine.
Yep, Back taps are the way to go.
A dolop of grease on the far end and all of the crud comes out with the tap.
Even better is most thread damage happens at the plug end so you are starting the tap in the best section of the thread
And of course if the thread is really bad you can restore it in several stages
#6
Hammermechanicman
I like the threads where the owner thought spark plugs were grade 8 bolts and put them in tight enough that you pull rings of aluminum out with the plugs.
I like the threads where the owner though spark plugs were grade 8 bolts and put them in tight enough that you pull rings of aluminum out with the plugs.
