I need a RUST PROMOTER ??

Yep, you read it right. I need a rust promoter, not inhibitor. Here's the deal: I got a set of 80's vintage rear-dump exhaust manifolds and filled the smog holes (thanks for the suggestions, HAMBERs!) but now they've got some really nice shiny spots where I ground down the welds. I'd like them to be somewhat uniform in their rustiness. Water would work...just get it wet and wait. Is there something faster? Salt water? Lime juice and water? Beer? Pepsi? Spit?

Any ideas?

thanks!

 

bleach

 

Maybe just leave your hood open. I hear that it gets kind of humid in Minn...

 

piss
will rust up fast

 

Muriatic acid

 

Bury them in your yard for a few days

 

send them to pennsylvania, anything can rust here!

 

vote 2 Muratic acid (used to clean swimming pools, or cement)

 

I dont know witch. but motor oil or brake oil and let em sit in water for a couple hours. Thats how my exhaust on my go-cart got rusty. Had to spend all day polishing them... Haha

 

Urine fastest, and you get a lot of purty colors in the oxide, put them in a camp fire and wet them and rub the white ash into them, or dissolve some rock salt in a bucket and spray them.

 

Disolve some copper in muratic acid for about a week then spray the solution on the metal. It takes about an hour.

 

especially if you drink cheap beer first.

 

ooops

 

I'd say if you sandblast them why let them rust again...

 

My thought too. Sandblast them or have someone do it for you, and apply some exhaust-manifold-dressing.

 

Just install them and run them through a few heat cycles and after a few weeks you won't notice the difference.

For what manifolds cost at a you-pull-it yard, I think I would have just gone and bought a set with no holes, cost wise it's going to be a wash over welding up holes.

 

Thanks, Everybody!

Hey, Rusty....I wanted to find some older non-emission manifolds, but they're just not around in yards anymore. A lot of the junkyards here have been killed off by suburban sprawl. My former favorite pick-your-part is now a bank parking lot and the bank closed down due to the recession. It's getting hard to find ****py parts much less ANY parts. So I take what I can get and hope for the best, and remember the days when you couldn't fall down in a boneyard without hitting V-8/rear-drive vehicles.

I'll try the muriatic acid. I've got it on the shelf, and I won't have to explain to the neighbors why I'm drunk on Fox Deluxe and ******* in the middle of the lawn again.

 

How the hell did you come up with the urine, fire, ash treatment? Gotta be more to the story.

 

reverse electrolysis. 10 hours = 10 years

 

If you used a nickel or stainless rod on cast iron manifolds the welds will always be shiny!

 

Paint them gold - bolt them up and run them - the gold paint will bake to a nice dark gray color. It only works on the exhaust manifolds cause they get hot.

- Joe

 

heres a link to the stuff west coast choppers used on a number of projects

http://www.modernmastersinc.com/products.aspx?pl=ME

 

I just painted mine silver after I welded up the smog holes. They turned out alright.

 

i worked for the original owners of this company before they sold it, and their house was covered in this stuff. i was so fooled thinking they had marble and copper walls! this was about 10 years ago. it looked soo well done! very very impressed with their product!

 

I hate that I know this! Saturate paper towels in salty water and leave them in contact over night. I regret to say I've done it and it works on sheet metal.

 

I would say, Buckskinner, Living History or a Blackpowder gunsmith!

 

ooops

 

True. Drive one winter day after they spray that liquid road de-icer **** and say goodbye to your entire undercarriage.

 

Ha-Ha!! You beat me to it...sad, but true.

 

i just clean them up, spray header paint on em and wait for it to fall off and the manifold rusts....