Front Subframe Bushing Bolts

[sperold]

93 SHO.
I am going to lower my sub frame and I would like to oil my 2 front bushing bolts before I try to loosen them.
I have the rears under control.
On my first fling at this, I cannot find how to get the penetrating oil down onto the top of the bolt and into the nut.
Does this involve drilling a hole beside the bolt on the frame horns?
Do I have to remove a lot of things to see how to access this area?
Any help would be appreciated.

 

[pjtoledo]

there is a square-ish hole on the inside of the rails (frame horn).

 

[rubydist]

yup, there is a hole in the general area on the side of the rail, so if you spray enough PB in there, some of it should get in the right place...

 

[sperold]

I found a 1 1/2" square hole on the side of the frame rail, the horn is hiding it on the drivers side, and out in the open on the passenger side. I stuck my fingers in there (the best I could), but did not feel the top of the bolt. But I could not get into a good position to do this.
Despite the lack of feel, is this the correct hole?
I am going to fog that hole with liquid wrench, unless I hear differently, and plan on getting another can to make it happen.
Thanks to everyone who has helped on this.

 

[rubydist]

that's about the right size, I recalled it as round but its been a while and my brain is getting older...

 

[sperold]

Just to round out this thread, I found a way to oil the top of the sub frame bolt at the front of the sub frame.

Get a couple of cans of penetrating oil, the ones with a small straw that goes in the nozzle to spray inside lock cylinders and the like. Take one of those straws, and put one end in recently boiled water, and you can bend this straw in a half circle. Once it cools down, the shape stays. You can attach that straw to the other one with plain scotch tape, but it must be replaced each time you use it as the penetrating oil gets to it and unravels it.

Once this pair of straws is on the penetrating oil can, you can manouver the end up in the square hole and blast the penetrating oil down on the thread of the sub frame bolt above the anchored nut.

The big surprise to me was the straw did not collapse when it was bent in a quarter or half circle, and the fact it stays in the new position after it cools down. So the take away is - keep those little straws when you toss the can, as they are pretty versatile.

 

[itwonder]

I reached them by making extensions for the red spray straws. Cut one in half. Push it up inside insulation stripped from good 'ole Romex house wiring, 12 gauge, if I recall correctly. Do the same at the other end, angling that piece as needed. You can make them any length required. The fit is tight enough that they stay put.