Author Topic: Zinc  (Read 3219 times)

Offline Bitzer!

  • Junior Member
  • ***
  • Posts: 906
  • Smiles per gallon
Zinc
« on: October 22, 2014, 04:14:33 am »


Hi all,

A little quiet over this side of the pond, all work & no play.

A question for all you painters out there - If my chassis was blasted to bare metal and then zinc coated, what prep do I have to do to the coating before applying paint? Rub down, wipe, paint or can it just be wiped and painted?

Cheers in advance

Andy
1979 GMC CrewCab  C20 1t
454 750 Holley,TH350, 14bolt diff fully floating
Why aren't there 8 days in a week!
A K5 rolling shell *new addition*

Offline zieg85

  • Global Moderator
  • Senior Member
  • ****
  • Posts: 7595
    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Re: Zinc
« Reply #1 on: October 22, 2014, 05:34:19 am »
There are several styles of zinc and all should call out clearly the next step.  Most of the ones I've sprayed use an epoxy intermediate coat but I am in the industrial side.
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline Engineer

  • Senior Member
  • ****
  • Posts: 1402
Re: Zinc
« Reply #2 on: October 22, 2014, 07:15:01 am »
My '77 uses doors, fenders, and hood from a '91 Suburban. All are zinc galvanized. I sprayed DuPont Ful-Poxy primer on everything. Epoxy primers are compatible with zinc. There are a couple more but most automotive primers are not compatible with zinc.
2002 Chevy 2500HD 4x4 8.1/ZF6sp RC/LB
2001 Chevy 2500HD 4x4 6.0/4L85E EC/SB
1997 Chevy Blazer 4x4
1994 Chevy K-2500 4x4 C6P 5.7/4L80E
1979 Chevy K-30 4x4 4sp 4.10
1977 Chevy K-30 4x4 4sp 4.10 454

Dad of an Eagle Scout, and a Life Scout