Painting firewall

[FAKKY]

So getting ready to paint firewall
Seems like it's a area people peopleostly like to disagree on what's best

Hers my approach ...... Not a show truck so just after good durability .... Let me know of anything a no no ....


1. Sand and wire wheel as much as possible .... 120 grit
2. Wash dust with water and soap and rinse
3. Apply phosphoric acid ... jasco etch prime
4. Dry overnight.
5. Reapply jasco and wash with soapy water 1 hour later and rinse.
6. Dry.....
7. Apply Rust-Oleum high performance metal primer
8. Dry.
9. Reapply same primer.
10. Sand with 120 and then something like 800.
11. Rinse and dry.
12. Apply Rust-Oleum professional high performance protective enamel
13. Dry.
14. Repeat 2nd coat of enamel

Ok..... Let me know if anything is wrong .... Did consider using valspar tractor implement and hardner ..... But since I don't have a compressor ..... Just going with foam brush