Re: acid dipping
[Re: proshiftcharger]
#786083
08/28/10 01:03 AM
08/28/10 01:03 AM
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Joined: Jul 2010
Posts: 3,502
SOUTH JERSEY
HEMIFRED
master
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master
Joined: Jul 2010
Posts: 3,502
SOUTH JERSEY
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the politically correct term is chemical milling.
acid eats away at the metal.
average use is roughly 20% weight eduction
how ever some have been know to get carried away
home of the
Sox and Martin Hemi Duster
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Re: acid dipping
[Re: HEMI472]
#786085
08/28/10 03:05 AM
08/28/10 03:05 AM
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Joined: Jan 2003
Posts: 27,548
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,548
So Cal
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Quote:
is there any place to have this done ? or dont they do it anymore ?  thanks Ed
Look up chemical milling. I think it's mostly used in aerospace.
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Re: acid dipping
[Re: proshiftcharger]
#786089
08/28/10 01:10 PM
08/28/10 01:10 PM
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Joined: Aug 2003
Posts: 43,719
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,719
Bend,OR USA
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Two different processes  Cleaning versus milling  The industrail milling for steel or cars is really hard to find now
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: acid dipping
[Re: bigtimeauto]
#786091
08/28/10 05:09 PM
08/28/10 05:09 PM
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Joined: Oct 2008
Posts: 1,894
Mira Loma, CA
69B3GT
top fuel
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top fuel
Joined: Oct 2008
Posts: 1,894
Mira Loma, CA
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Quote:
just make sure you paint your car white when its done. 
Why do you say that? I know where there is a real ss shoebox nova sitting in a garage that had the fenders and doors acid dipped when it was new and its painted black and looks fine.
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Re: acid dipping
[Re: 69B3GT]
#786092
08/28/10 05:21 PM
08/28/10 05:21 PM
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Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto
Trophy Winner
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Trophy Winner
Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
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back in the 70's we used do do all of our cars. SRD had a tank and we experimented on different leave in times versus weight. If you want weight out they will get wavey. depends on your end goal.
remember all of grumpys toys were white, hmmmmmm. (srd built them)
I wouldn't even bother now a days. there are way better ways to loose weight in cars than that.
BB, TT5,Procharged 3300lb Street Car 4.79/154
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Re: acid dipping
[Re: HEMIFRED]
#786093
08/28/10 06:48 PM
08/28/10 06:48 PM
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Joined: Oct 2007
Posts: 4,219
New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,219
New York
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some have been know to get carried away
and not always voluntarily!
I read that of the factory cars that were dipped, only Landy had his neutralized properly, the other bodies dissolved into piles of dust after a few years. it's easy to do: mild baking soda solution flush, but it takes hours if you can't dip it.
If someone is going to do this for you and says "it's safe" ask him to drink a cup of run-off afterward.
How to tell it's safe afterward?
Litmus in the run-off water: looking for 7.0 or slightly more. 5 means you've got a lot of work to do.
Boffin Emeritus
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Re: acid dipping
[Re: HEMIFRED]
#786096
08/28/10 11:05 PM
08/28/10 11:05 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Just curious, did you acid dip or lighten up the drivers door when you had to replace it?
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Re: acid dipping
[Re: B G Racing]
#786100
08/31/10 03:00 PM
08/31/10 03:00 PM
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Joined: Jan 2003
Posts: 27,548
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,548
So Cal
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Quote:
Just buy Goodmark metal panels,they are thin enough with out acid dipping.  
...
Seriously, that is a valid and cost effective solution. And you could sell the original panels to offset the costs.
Also some of the repro glass is thinner too. Troy got some repro 67-69 Dart side glass that is thinner. And was pretty cheap to boot!
He just wanted non tinted side glass for his Hemi Dart clone. The "Super Stock" thin glass was just bonus!
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Re: acid dipping
[Re: proshiftcharger]
#786101
08/31/10 05:26 PM
08/31/10 05:26 PM
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Joined: Apr 2008
Posts: 1,141
Phoenix,Az.
hemicop
super stock
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super stock
Joined: Apr 2008
Posts: 1,141
Phoenix,Az.
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Quote:
When someone refers to "acid dipping" to remove weight how is this different then having your car chemically dipped to removed paint and rust? Is there a difference in the acid, chemicals, time submerged, or strength used? Or is it two totally different procedures all together?
 
Chemical Milling is still used, even in some racing and there are a few places in the MidWest that do it. Don't know if they can do a whole car, though. But todays repo & 'glass parts are so much thinner than they used to be it's almost not worth it. Cars like "HemiFred's" had their panels sprayed , as he said, to prevent deflection at speed, they were so thin. This was all soooo common back in the day that no one ever thought much about it as they never expected their racecars to last so long & be so valuable.
"Big Willie" Robinson will tell you flat-out his second "King Daytona" streetracer was lost to the acid tank when they left it in too long.
All that being said, would I "dip" some parts? Sure! With liteweight metal bumpers for some cars not being availible or some cars/parts not being made in lighter materials & IF I was going for every possible ounce, it really is the only answer. But I think we've gotten a little smarter & creative over the years to, for the most part, not resort to it.....
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