solved

 

Check out the 92-00 civic forum they have a few broken bolt threads. Sorry for that pun...

I'm thinking your going to have to pull the engine to fix it correctly. A heli-coil is what you or a machine shop will put in. While the block is out I'm sure you'll check all the threads. Use anti-seize compound on all the bolts when you put it back together.

Good Luck

 

Any auto parts store will have it. I prefer the copper stuff.

 

Look into a time sert instead of a helicoil. They are higher to use initally but are superior IMO.www.timesert.com

 

Timecert is a far superior product than a helicoil.
Gotten me out a a jam or two. You will prolly have to pull the engine to get this done correctly. You want to be precise with the drilling to make sure the cert goes in straight.

 

Yep, we do it at work.

Take a pointed punch or small chisel and get in behind the heli-coil top thread and pry it out so you can grab it with needle nose pliers and twist it out. (you may need to lightly hammer the punch in.)

Your doing good, keep after it.

 

Helicoil actually makes a removal tool, but the above method works great too.

 

Definetly have to pull that motor to fix it right. Looks like there is plenty of material to go up a size. IMO, pull the motor take it to a machine shop and have them drill and tap to next size up, use antiseize and a torque wrench when re-installed and it will never happen again.
If your gonna go through the effort of a timesert thats great, you will have steel threads, much better than original aluminum, but from looking at that motor its a street car and IMO(thats twice)overkill, OP needs to make the most cost effective choice for himself, if going to a machinist drilling and tapping would be cheaper and plenty strong for what I think his use is.
I forgot about the actual mount adapter, I'm pretty sure that can be drilled up to fit a larger bolt, you guys can flame me for that if you want.