Since there is no more hot tanking and not too many machine shops around Winnipeg, if any that shot peen. What is the best way to clean off the rust on my rare 1971 455 HO and also a rustier 1967 Pontiac 400 engine block that I have in my precious collection ?
I had to bring it in the house to check a cylinder that I thought was cracked, I tested it with penetrant and developer ( NDT procedure ) The good news it isn't cracked, just scratched. The block had to be room temperature warm to do it, my garage is not heated. Rust inside the engine/heads should be all removed and outside, it just doesn't look good.
Works wonders if you have the time to wait. Truck bed rails came out like new!! Plastic 45 gal drum and let soak,some heavy tie wire/chain and let sink to the bottom.
-- Edited by hawkeye5766 on Friday 10th of November 2017 12:47:33 AM
NDT, Non Destructive Testing . It is often a white powder on one side and a red die from the other. The red die is very invasive and it shows any pin hole or crack as a blood stain in the white. Often used in the nuclear industry. Some also call it die penetrate. My experience was on steam lines that could not be radiographed.
Yup, I learned some of it along the NDT techs at work as they use it on our aircraft parts ... How it works : First you clean the area real good ( contact or brake cleaner works, spray it with the red dye penetrant in a can, let that sit on the suspected crack for 1/2 hour, wipe that off with a soaked lint free rag, then spray the white developer in a can so if there is a crack the red dye that penetrated the crack if there is one, will show it.
-- Edited by pontorquer on Friday 10th of November 2017 12:11:38 PM
