Found bad threads on one side of mine nite before go'n to the track, and didn't have correct size insert. Ended up clean'n out bad threads, the chased to next size larger bolt. Been fine for years.
The same thought occurred to me. I did that for a stripped out starter motor bolt (into the aluminum tranny bellhousing) on my 1st car. Never had a problem.
Thanks for the suggestion. I ended up just finishing installing the Helicoil inserts with no problem. I was wrong about the depth of the holes though. The reason why one appeared only half as deep as the other is that there was a bunch crap compressed into the bottom of the hole. The original depth of each hole was deep enough to accommodate a 1/2 inch long HeliCoil insert, so didn't have to cut any coils to make it shorter. Thanks again for the guidance!
