Originally Posted by paraman72
Since most of the boxed frames rust from the inside out, I was thinking of a way to clean the rust and prevent the cancer. Since I had to cut off the rear crossmember I purchase a cheap chimney sweep on stealbay that I am going to trim down and run it through the frame. Then por-15 it of using the marine clean and metal ready. Whacha think about those apples.
If the brush has steel bristles, don't do it. I had the same idea.
I bought a 5" square steel bristle chimney brush, then trimmed it down, with a cutting wheel.
I trimmed, then tried it, trimmed some more, tried it, etc. When I thought I had it trimmed enough, I shoved it in the rear opening of the frame...about 4" in.
It was nearly impossible to get out!!
The bristles will face the direction of the push, when entering, but do not want to reverse themselves, when you go to pull the brush back out!
Of course, I finally got it, but it was a hassle.
I ended up buying a 7pc. engine cleaning brush kit, with abrasive, nylon bristles, and shoved them into frame holes. I did the best that I could, then blew the frame out with air. Good enough.
I'm going to spray boiled linseed oil in there, and call it a day.