Molasses Bath Trial

[CTMopar]

I figured that I would give the molasses bath a try on this set of manifolds. They went in a 8:1 solution just now. I’ll check back in on them in a couple of weeks.

 

[66383]

I'll be waiting!!

 

[glorydays]

evaporust and you can be done in 12 -18 hours

 

[CTMopar]

I have heard mixed reviews of evaporust, have yet to hear a negative on this. Evaporust is $23 a gallon and this works out to $1 a gallon. Evaporust is chemical based where the molasses is natural and will not damage the parts if they are left too long(different chemical reaction). I have seen where people have reused the molasses bath for up to a year. When you are done with it it’s safe to just dump it in the woods or down the drain. I have never tried it myself until now so we will see what happens.

 

[CTMopar]

It took 9 gallons to totally submerge the two manifolds. That’s $10 or so in molasses solution or $200 or so in Evaporust. That’s a big part of why I am giving it a shot along with the disposal afterwards. If it doesn’t work I will have some rusty but “sweet” manifolds.

 

[JB400]

Don't sugar coat the results

 

[WileE]

This method is slow as molasses. {rimshot}

 

[Dibbons]

Being the fact these restorations take years and years, not too inconvenient, after all.

 

[68sprtsat383]

White vinager works to just have to wash good afterwards.

 

[glorydays]

I get the money aspect of evaporust... wasn't knocking your method at all... I bought a gallon of it and then wet down a towel and drenched it wrapped it up with a Walmart sack came back 12 hours later presto and all the rust was gone. no worries... I just hate the wait

 

[CTMopar]

I get the money aspect of evaporust... wasn't knocking your method at all... I bought a gallon of it and then wet down a towel and drenched it wrapped it up with a Walmart sack came back 12 hours later presto and all the rust was gone. no worries... I just hate the wait

Not my method just something I'm trying out and figured that I would share. What about the inside surfaces?

 

[Dibbons]

I understand EvapoRust comes in a powder as well as a liquid, have not found the powder on a store shelf, however.

 

[cryplydog]

May I ask why you don't just have them bead blasted?

 

[metaldad]

This method is slow as molasses. {rimshot}

 

[69L48Z27]

Bead blasting manifolds is the way to go IMO.

Evaporust is environmentally friendly and it will not damage the part. You will destroy a bath of ER with cast parts for sure. Seems the more iron content the faster it kills the ER. You can get ER in 5 gallon bucket from Summit for under $90 to the door. I'll be anxious to see what the results are here. I'll be waiting.

 

[Sixpactogo]

I don't have a before pic but here is one I did in the molasses bath last year. Sold it a month ago. I use a 7:1 ratio. I don't recall how long it was in the bath but not longer that a week.
How about these Charger door latches after a week in the bath. I like it because it leaves the galvanizing alone. Just eats the rust. I use the same solution for a few months then dump it and start over.

 

[CTMopar]

May I ask why you don't just have them bead blasted?

I’m thinking that I may need to blast a little to clean up the painted areas. If this works like they say it does I see a few advantages. It’s set it and forget it, that leaves time to work on or do other things. Multiple parts can be done at once. It does the complete inside of the manifold that can not be reached blasting.

 

[CTMopar]

I don't have a before pic but here is one I did in the molasses bath last year. Sold it a month ago. I use a 7:1 ratio. I don't recall how long it was in the bath but not longer that a week.
How about these Charger door latches after a week in the bath. I like it because it leaves the galvanizing alone. Just eats the rust. I use the same solution for a few months then dump it and start over.

View attachment 608385 View attachment 608386 View attachment 608390

Those look really good. I hope that I see similar results. I am not going to be in the garage much the end of this week and not at all the following week so that’s why I said two weeks.

 

[Sixpactogo]

If you are not in a hurry, it works great. It won't take paint off though like you are aware of. When I took my manifold out of the bath, I noticed a little orange paint left on the heat riser that the factory sprayed on.

 

[Billccm]

This month's edition of musclecar review magazine has a tech tip for using molasses to remove rust. I believe they mixed the molasses with boiling water.