Just wondering if anyone has any personal experience with using a backtap to fix a cross thread spark plug hole. I have cast iron heads, not aluminum. I'm concerned that it may not work as well on iron, still not a big deal, I can still pull the head, but compression on all other cylinders is good, so I'm assuming compression on this is also good, just the plug threads need attention.
Or should I just pull the head and tap it from the inside out with a regular tap?
Guess I don't need to explain what I'm trying to fix. It wasn't me, I bought it this way.
Here's a link to what I'm referring to:
Un-Oops That Cross Threaded Spark Plug Hole | Toolmonger
Here's a youtube video:
(try and ignore the awful music)