dekats1

There is a YouTube video in which a guy soaked some old rusted metal in vinegar for a few hours as an experiment. The results looked remarkable, as it removed all of the rust down to bare metal. Has anyone used vinegar to remove rust & corrosion from d exhaust manifolds? I was planning to bead blast mine, but wonder if this might be an even simpler way to do the job. Thanks.

5869vette

Haven`t used vinagar, I use the works toilet bowl cleaner . Let it sit overnight, making sure all the air pockets are filled inside, flush with water and baking soda, ready for high heat paint.

Tony

Gary's '66

Personally I would bead or sand blast them then use POR-15.

Gary

Craftsman51

Nowhere Man

this is a proven method that has worked thousand times over.

ifitgoesfast

Not as simple as that.

First you have to clean off all grease, oil, etc. Mix white vinegar, lemon juice, some other stuff. Time soaked is very important. There'll be a darker tone you'll have to watch for. Then you have to neutralize the acid from the treatment and wash it clean. The treat it so it doesn't flash rust.

Try on something small first.

Sand blasting slightly alters the surface and rounds out details, numbers. Maybe not enough for some, but I wouldnt go that route unless you do it lightly.

LouieM

Had my manifolds ceramic coated, in the process of which they heat the metal to very high temps, which gets rid of any oils, etc. I'm not sure if this would get rid of rust also. Ceramic seems to be the most durable coating for manifolds.

anglerjon

[QUOTE=LouieM;1590541240]Had my manifolds ceramic coated, in the process of which they heat the metal to very high temps, which gets rid of any oils, etc. I'm not sure if this would get rid of rust also. Ceramic seems to be the most durable coating for manifolds.[/QUOTi like many have used white vinager and have had good results it may take a few days but it does work

Roger Walling

I sand blasted mine and used high temp paint from Ace Hardware store.

I baked them in my oven at 200 degrees and let them cool, followed by two more heating's at 300 and 425.
The paint has protected them for over a year so far without and discolorations.

dekats1

As I understand it, bead blasting is less harsh on the cast iron and doesn't round out the letters. Is that correct?

ifitgoesfast

http://www.kramerindustriesonline.co...tion-guide.htm

http://www.kramerindustriesonline.co...ison-chart.htm

http://www.nortonsandblasting.com/nsbabrasives.html

ditchdigger650

Mine are also ceramic coated, and this process will get rid of the rust if their not deteriorated.

MOXIE62

Greatest tool ever invented, the sand blaster