Stoty Posted September 13, 2013 Report Share Posted September 13, 2013 Hey all, Had a buddy ask me a question about what type of paint to use if they wanted to touch up their lower unit? The first thing that came to mind for me was the "high heat" black spray paint that you can use on BBQ, etc. Would that be ok? Are there certain types of paint that would work, or would any be ok? Link to comment Share on other sites More sharing options...
krixxer Posted September 13, 2013 Report Share Posted September 13, 2013 For the most part I use epoxy primers with polyurethane topcoats. This combo will go 10000 hours accelerated corrosion test (salt pray) Link to comment Share on other sites More sharing options...
aplumma Posted September 13, 2013 Report Share Posted September 13, 2013 epoxy paint with a well prepared base will work great. Art Link to comment Share on other sites More sharing options...
Muskieman Posted September 13, 2013 Report Share Posted September 13, 2013 Another vote for Epoxy .. Link to comment Share on other sites More sharing options...
DRIFTER_016 Posted September 13, 2013 Report Share Posted September 13, 2013 You can actually buy outboard motor paint @ CT. I got a couple of cans of black for LU touch-ups. Link to comment Share on other sites More sharing options...
Stoty Posted September 13, 2013 Author Report Share Posted September 13, 2013 Right on, thanks for all the info guys! Link to comment Share on other sites More sharing options...
Nipfisher Posted September 13, 2013 Report Share Posted September 13, 2013 Is it more enjoyable when you paint your "lower unit"? Link to comment Share on other sites More sharing options...
Burtess Posted September 13, 2013 Report Share Posted September 13, 2013 For the most part I use epoxy primers with polyurethane topcoats. This combo will go 10000 hours accelerated corrosion test (salt pray) 10,000hrs?? Do you mean NSS? CASS? Over what substrate (galvanized? Zn plate?) Burt Link to comment Share on other sites More sharing options...
krixxer Posted September 14, 2013 Report Share Posted September 14, 2013 The test is done to ASTM B 117-07 We prepare the substrates in accordance with Mil Spec 8625 F .TyII Cl I (chromic acid anodizing) 10,000hrs?? Do you mean NSS? CASS? Over what substrate (galvanized? Zn plate?) Burt Link to comment Share on other sites More sharing options...
Roy Posted September 14, 2013 Report Share Posted September 14, 2013 Isn't it great? All kinds of members here with real skills willing to share their knowledge! Beautiful. Link to comment Share on other sites More sharing options...
Burtess Posted September 14, 2013 Report Share Posted September 14, 2013 The test is done to ASTM B 117-07 We prepare the substrates in accordance with Mil Spec 8625 F .TyII Cl I (chromic acid anodizing) Sorry hijack.... Have you ever tried some of the zirconium or trivalent chromium based pretreatments over Al? If so what were your experiences with them? Burt Link to comment Share on other sites More sharing options...
krixxer Posted September 15, 2013 Report Share Posted September 15, 2013 (edited) Sure, Alodine 1200 I have a 600L tank of the stuff. We buy the flakes and make our own solution. Not as resilient as anodizing but if all you want is the paint to stick I'll does the trick quite well. Sorry hijack.... Have you ever tried some of the zirconium or trivalent chromium based pretreatments over Al? If so what were your experiences with them? Burt Edited September 15, 2013 by krixxer Link to comment Share on other sites More sharing options...
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