After breaking multiple sockets and trying the strongest impact I could get, I have decided that my subframe bolts are gonna need ore than elbow grease to get loose. I want to know how to get to the top of the bolt. I illustrated my question :



What I plan on doing is making some kind of sponge or reservoir that I can just fill with PB blaster and let sit on top of the bolt for a night, keeping the penetrant where it needs to be so all of it will fall through the threads to loosen them. Aside from my first question, I'm also open to ideas on how to loosen these bolts.

You can spray throught the small holes in the frame - the holes for the plastic screws that hold the wheel liner in place.

You can also remove the rear clip to get access to set a sponge on top of the witchhat bolt in the frame.

Good luck!

To give you a visual of what saxman said:


Green arrow from removing rear clip, orange through the holes. Green circle is the mount point of rear cradle for reference.

hard to see any detail in that picture, if you have a bigger one with the arrows can you send it to me?

I sent some pics your way. Hope this helps.

I just removed mine by spraying some penetrating oil in through the little hole in the fender well; you can't really see anything, I just hosed it around. I don't know if this really helped at all, but I did get them out. Are you saying that the nut is spinning inside the frame, or that you can't even turn the bolt head? Mine certainly weren't too tight to turn, but one of them was starting to spin inside the frame. I undid the other 3 and lowered the cradle slightly to put a lot of load on the nut, to pull it well onto the frame; that gave it enough friction to get the bolt out. And this was a thoroughly rusted Canadian car.

Rick

I cut holes and weld them closed.... easy for me, might not be for the shade tree'r. I can get anything and everything on them to get them out this way, without screwing around.

My bolts just wont turn, period. I got all the info I need, thanks in large part to 86fierofrun, for sending a very large scan of those diagrams. You can all go now...... go on.......... nothing else to see here....................... move along..............................................................................