Somehow I managed to stick the threads on my forward left seat mount. The bad thing is that the forward nuts are encased inside the fiberglass seat mount rail (the rears have exposed nuts that are easy to get at from beneath the car). Right now all the bolt/nut does is spin, and I can't get it to separate from the nut no matter how much upward pressure I put on it. Also, it's weird that the inner nut is spinning because on the opposite side, the nut is secured and doesn't move. I guess the only thing I can do is Dremel a hole on the fiberglass seat rail so I can get a wrench in there to hold the nut still. Also, you can't cut a hole in the underside of the car because you'd have to cut through the metal undercarriage first and then cut into the fiberglass tub. Has anybody had to deal with this?
If you are taking about a 308, I just helped a friend in the same situation. We ended up drilling a 2" hole from underneath the car to get access to the nut. The seat nut is held in a metal channel that runs between the 2 seat nuts. After we put in his new seats, we simply plugged the hole with a rubber body plug. (Suggestion, start with getting the rubber plug, then you will know what size hole to drill).
If I were in this situation, I would Dremel off the top of the bolt and get the seat out of the way. From there, you may have some more options. Keep in mind that the bolt/nut could fall into the pan from there. However if it does, you can use a magnet to get it out of one of the drain holes. Gene
FYI - - The actual seat rail is steel and is covered by fiberglass, so you can't really get to the nut by cutting through the rail on the floor. I had to get to it from below as Pad reco'ed. I was also going to take GTHill's advice and just cut the damn bolt off so I could at least get the seat out and have more room but there was no way to get the Dremel in there! Anyway, it's a little disconcerting to cut a hole in the car, even on the underside of this hard-used thing, but that's what had to be done. The nut is supposed to be secured, don't know why mine is spinning. Through the hole I cut, I was able to jam a small screwdriver against the nut to hold it still and and unscrew the bolt. I now have to get the car on a lift or on jackstands to get a really good look on how to get the old nut out and put a new one in - and secure it so it doesn't spin. Advice to 308 people: take your time screwing down your front-end seat bolts!!!! You DON'T want to strip that nut!!! (The bolts for the rear mounts are exposed underneath the car, so you can strip those all you want!!)
