OK, so son's Merc has rust... we can see and attack rust on the outsides of the frame, but what about inside the frame??  A frame-off resto is out of our price range, so I'm wondering how to clean out the inside of the frame rails...

I'm thinking something I can run back and forth would do some good, but haven't come up with anything yet... thinking something rough and scratchy like a Brillo pad only bigger, might work.  It would have to be something that would fit tight inside the frame rails, but moveable so I could draw it in and out, back and forth using a wire or stick, to loosen up as much rust as possible.  If I can get it loose, I can blow it out with air...

sounds weird I know, but has anyone done this?  anybody got any ideas? 

as always, thanks for all suggestions/comments/encouragement on this project!

Mark and Daniel 

"God Bless Texas"location: Houston,TX