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Do they still hot tank motors?

Moparfiend

Moparfiend

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I see posts from today telling guys to get their motor hot tanked. I thought they stopped that years ago or did they just change from chems to water?
 
Low chems and higher pressure and heat to make it work.
 
You have to disassemble it first.
 
Hard to find a hot tanker these days...The EPA has put a lot of them out of business. I had to go 70 miles to find one.....But that is what you need if you want the water jacket rust out..............................MO
 
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Cornpatch MO said:
Hard to find a hot tanker these days...The EPA has put a lot of them out of business. I had to go 70 miles to find one.....But that is what you need if you want the water jacket rust out..............................MO
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Yeah you can’t replace it for the water jacket cleaning abilities. I think there are not many places doing this now but I still wonder if its the chemicals that “were” used or the process that the EPA is against. Like even no chemicals just water how do you legally dispose of the mucky water?
 
For a minute I thought how did I end up in the blue forum??
 
Moparfeind said:
Yeah you can’t replace it for the water jacket cleaning abilities. I think there are not many places doing this now but I still wonder if its the chemicals that “were” used or the process that the EPA is against. Like even no chemicals just water how do you legally dispose of the mucky water?
Click to expand...
We still do a lot of it here i MI. Then we sell the water to AZ and CA. :thumbsup:
 
No hot tank EVER got rid of rust. The purpose of the hot tank has always been to remove grease, oil, paint and similar crud. Those chemicals had no affect on rust - not now, not back "then".
 
I’m not sure what the process is here, my shop calls it ‘cooking’. But, they blocks come back clean and look like a fresh casting. I think that’s the goal right?
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69L48Z27 said:
I’m not sure what the process is here, my shop calls it ‘cooking’. But, they blocks come back clean and look like a fresh casting. I think that’s the goal right?
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There is a process referred to as "ash burning" that does involve baking at high temperatures that removes all coatings, maybe that works for engine components too.
Mike
 
The water in hot tanks would evaporate away. so you would have to ad water to them occasionally. it is the muck that is cooked off the parts that is the issue. I worked in a shop that had one and still does. And yes all knowing Stanton it did remove rust. I used it and cleaned many a engine block. The ovens came out and baked the engine parts and after they were baked for a while you would remove the parts and wash them in a wash out tank to get rid of the baked junk. just like when you clean your oven at home, there will be some junk left behind to clean up. you cant put aluminum in either type of cleaner. there is a liquid dip for that.
 
What about leaving freeze plugs in and plug WP in/out holes with block on an engine stand. Then level a cylinder bank on one side fill with Evapo-Rust? Then drain and do other bank.
 
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