Re: De-chrome bumpers
[Re: topside]
#3043854
05/20/22 10:46 AM
05/20/22 10:46 AM
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Joined: Dec 2013
Posts: 4,804 Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,804
Wichita
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Not bumpers, but did a chrome air cleaner.
Scuffed the chrome really well and painted with black wrinkle paint and it's been fine for over 8+ years.
'63 Dodge 330
11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
9.92 @ 135mph with a 350 shot of nitrous and 93 octane pump. 1.43 60 ft. 3,750 lbs.
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Re: De-chrome bumpers
[Re: topside]
#3043857
05/20/22 11:05 AM
05/20/22 11:05 AM
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Joined: Jan 2004
Posts: 8,637 fredericksburg,va
cudaman1969
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fredericksburg,va
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DA sander with 180 & then 400 IIRC, primer & paint. Still excellent 30 years later. FWIW I did body color rather than black on my Duster; looks more cohesive to me. What I’m thinking too, cut and section to fit tight to body, weld bumper bolts inside then grind smooth. 70 SubLime green With black grill and tail lights
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Re: De-chrome bumpers
[Re: cudaman1969]
#3043885
05/20/22 12:13 PM
05/20/22 12:13 PM
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Joined: Sep 2003
Posts: 20,235 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 20,235
north of coder
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a very long time ago, we sanded bumpers with 40 grit, 80, then 120 on a DA. this was followed by a green primer, of which the cobwebs in my noggin are blocking what product was used. paint with hardener was used for the top coat, and seemed to last very well. just my experience, your mileage will vary.
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Re: De-chrome bumpers
[Re: moparx]
#3043889
05/20/22 12:22 PM
05/20/22 12:22 PM
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Joined: Jan 2004
Posts: 8,637 fredericksburg,va
cudaman1969
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fredericksburg,va
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a very long time ago, we sanded bumpers with 40 grit, 80, then 120 on a DA. this was followed by a green primer, of which the cobwebs in my noggin are blocking what product was used. paint with hardener was used for the top coat, and seemed to last very well. just my experience, your mileage will vary. Barracuda bumpers are rounded and no nooks or crannies so sanding will be a good way I see..
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Re: De-chrome bumpers
[Re: nick24]
#3043915
05/20/22 01:54 PM
05/20/22 01:54 PM
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Joined: Jan 2004
Posts: 8,637 fredericksburg,va
cudaman1969
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What I read up on, sulfuric acid for the chrome (real thin) then another (can’t remember what) to get the copper and nickel off down to steel. But nickel is soft enough to sand and get a good tooth for the paint and not peel. I want to do the same on the Duster race car too (steel required) Good to get these different approaches on what will work though
Last edited by cudaman1969; 05/20/22 01:59 PM.
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Re: De-chrome bumpers
[Re: robertop]
#3044033
05/20/22 10:43 PM
05/20/22 10:43 PM
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Joined: Jan 2004
Posts: 8,637 fredericksburg,va
cudaman1969
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fredericksburg,va
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Take the bumper to a bumper rechroming place and they will take the chrome off in no time! Nearest one is 500 miles away
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Re: De-chrome bumpers
[Re: cudaman1969]
#3044724
05/23/22 09:54 PM
05/23/22 09:54 PM
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Joined: Jan 2013
Posts: 294 Maryland
MoparMike1974
enthusiast
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enthusiast
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Posts: 294
Maryland
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To remove chrome only, use a muratic acid diluted with water. About 50%. Gloves, faceshield, respirator is highly suggested. Using white rags, wipe the solution on the bumper until the rag no longer picks up a yellow color. You can spray it down with a spray bottle and let it sit for a few minutes then hose it off....to get the bulk of it. The layer of chrome is extremely thin (and hard) and is only there to protect the nickel, which would start oxidizing quickly without it. Also it should be noted that chrome is actually clear so you cant see if its all off. The rag test will show you when your done. When your all done it wouldnt hurt to neutralize the acid with some baking soda. You can spray on a baking soda water mixture or sprinkle the soda directly on the bumper, then rinse. If putting the soda directly on bumper, wet it down with water first.
Last edited by MoparMike1974; 05/23/22 09:56 PM.
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