His actual hands on time investment is a lot less than sandblasting would require and
this process will remove rust in areas sandblasting can not reach.
exactly... the manifolds i soaked had scale and rust inside them. when i pulled them a few months later they were like new... they have the exact finish the were cast and installed in 1970 and no abrasive blasting was necessary.
The chemistry is similar to products like evaporust which work by chelation but are
much faster than molasses (no pun intended). :tongue7:
I've used this one (
http://www.rust911.com/rust-remover-conc.html) with phenomenal results overnight. If bought in concentrate form the cost is not bad. $60 for 1 gal that makes 10 gal so $6 per gal vs evaporust which sells at HF for about $30 per gal. I keep a 5 gal bucket handy for whatever.
The industry is in flux with this product. The name and website totally changed since I made my purchase. Likely they are all selling the same thing and working hard to protect the marketing of their "secret ingredients".
Here's some interesting info I found when researching the topic.
Here's an interesting but sad rust story. I believe they were working on it with chelating treatment but work has been stalled by the recession...
http://www.allpar.com/history/auto-shows/time-capsule.html
Another home brew:
http://www.ehow.com/video_4950785_make-rust-remover.html
