Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Backtap for cross threaded spark plug
View Single Post
  #4 (permalink)  
Old 12-05-2012, 12:29 AM
cobalt327's Avatar
cobalt327 cobalt327 is offline
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Posts: 5,031
Wiki Edits: 1616

Thanks: 128
Thanked 616 Times in 565 Posts
Originally Posted by Infinite Monkeys View Post
It's a 2 valve, 1993 FI, 460. I'll look into the timecert. don't know about those.
My guess is that it's just the first few threads. I can't even start the plug. However, the plug was in there pretty tight when I removed it, so it's entirely possible there may not be much left.
I think you are right, pulling the head is the right thing to do.
If I do pull the head, can I then tap from the inside out? I haven't done this before.
Inside out is fine, but I would use a well lubricated thread chaser first to see if it will reform/untweak the threads w/o removing metal. Only if that didn't work would I use a thread cutting tap.
Reply With Quote