Do they still hot tank motors?

[gkent]

Hot tanks generally used Caustic Soda because its ideal for removing paint, grease and gunk BUT since its a "base" its not effective removing rust. "acid" - which is at the other end of the scale, is ideal for removing rust BUT it has no effect on paint, grease and gunk.

So do your own test ... buy a bottle of Draino, mix it up and toss in a rusty part. At the same time toss a painted and greasy part in a mix of Muriatic acid. Days later you can pull the parts out and ... they'll look the same as when you put them in.

Now rinse them off and switch them around. Totally different results.

Hot tanks do not remove rust !!

 

[zyzzyx]

Can't get anyone west of Chicago to Hot Tank anymore! I don't like the
process where they bake the block because if they go much more than
650 degrees, everything moves around a bit and it has to be line-honed,
decked, and the cam bores will not be in-line. Use lots of Easy Off oven
cleaner. It's caustic, the same as what they use in the hot tank but without
the heat. Redi-strip guys who do sheet metal and bodies can do a block also.

 

[dadsbee]

I thought they stopped doing hot tanking because too many new guys in the shop lowered aluminum blocks in and got an eye bolt back out..

 

[snakeoil24]

the new systems are just like a home dish washer on steroids and they also bake the blocks to burn the **** off.

 

[Bb70charger500]

Going to drop my block off one of these days to get it tanked !!! Will report back with before and after pictures

 

[bandit67]

Had a old block and heads cleaned and machined at my local shop years ago. They baked em. As I primed the assembled engine, I had several rocker arms that would not flow....a bb Chevy. After disassembly I found a dirt dobber has packed an oil passage with mud and all the baking had made it rock hard. Not sure if they had done a water flush afterwards, is so, didn't t work for that block. I prefer the steam cookers......

 

[gkent]

lowered aluminum blocks in and got an eye bolt back out..

That's funny !!

How many guys dropped iron engines in thinking they wouldn't need new cam bearings !!

 

[Moparfiend]

Sounds like the alternative methods to the traditional hot tank can be problematic. One would think an industry this large would have come up with a good viable solution before they axed the one everyone relied on....

 

[dadsbee]

That's funny !!

How many guys dropped iron engines in thinking they wouldn't need new cam bearings !!

FUNNY.. but TRUE!! LMAO. I remember the look on my Brother's face when he asked the new lad where that Volvo engine went that he was to start rebuilding...

 

[Cornpatch MO]

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".

Hell they didn't !!! maybe not where you are from but sure did here in Iowa. I don't care much for being called a liar... They had some pretty harsh chemicals in them , and I expect that is what the EPA came down on. Just like the chrome platers. I know a person that still chemically cleans rusted parts -cold, but won't do engine blocks... These hot water , high pressure cabinets they use now , and the shot blast cabinets , don't do well on rust IMO......................MO

 

[Cornpatch MO]

Hot tanks generally used Caustic Soda because its ideal for removing paint, grease and gunk BUT since its a "base" its not effective removing rust. "acid" - which is at the other end of the scale, is ideal for removing rust BUT it has no effect on paint, grease and gunk.

So do your own test ... buy a bottle of Draino, mix it up and toss in a rusty part. At the same time toss a painted and greasy part in a mix of Muriatic acid. Days later you can pull the parts out and ... they'll look the same as when you put them in.

Now rinse them off and switch them around. Totally different results.

Hot tanks do not remove rust !!

I call bullshit ! I know for dam sure the place locally that used to hot tank, Took out most if not all the rust in water jackets. I have built enough engines to know . The 318 engine I took to the machine shop 70 miles away, little over a year ago , hot tanked and came back water jackets free from rust... I don't know what all he may have had to do other than his hot tank
Bull **** #2 The guy that cold tanks to remove rust, it also removes paint so he must be using a mixture of chemicals that you don't know about....................MO

 

[Budnicks]

EPA ****

the water & particulates from the washing tank process
is usually supposed to be directed to a
grease/sand/dirt, separator trap/pit
where the water & oils floats to the top,
all the elements solid or liquids are separated, pretty well
several different chambers, so they can be dealt with as needed
in several section of the separator trap/pit
the sediment/non liquid & particulate settles to the bottom of the pit/trap
then most of that gets pumped/sucked, sometime even shoveled out
into a waste tanker/vessel style truck, a couple times or more a year
& it's disposed of, at the proper waste facilities

many times the oilsfluids are collected by a different co.
that deals with waste oils/fluids, antifreeze etc.

at least that's how they do it/my experience
many/most all machine shops & at automotive dealership
the traps/pits are used by many in the automotive industry,
even detail shops are supposed to have them

 

[cosgig]

My engine shop still hot tanks them, they come back as clean as a whistle!

 

[Slap Stick]

The elimination of caustic soda being used is another reason we no longer have returnable bottles. The washers used caustic to clean the bottles.

 

[gkent]

We have returnable bottles but we don't have hot tanks. Caustic soda is still sold in grocery stores.

 

[Slap Stick]

Returnable to be scrapped and melted down, not to he washed and refilled.

 

[dadsbee]

Breweries are still washing and reusing beer bottles!

 

[Mark Barnes]

View attachment 928276 View attachment 928277 View attachment 928278

So....no "puke" button on this forum?

 

[JimKueneman]

Hey Ron, yes Dave here hot tanks blocks at his machine shop (he did my K-Frame on the Duster and Dart).

 

[Slap Stick]

Breweries are still washing and reusing beer bottles!

Really?
Which ones?