Best way to paint stern drive ?

T

tweakerwes

Recruit
Joined
Jan 27, 2007
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2
Now my stern drive needs a paint job. Its starting to corrode.
What the best way to do it?
The paint on the sternd drive is almost completly damaged.
So i'm thinking to powdercoat the sterndrive?
Would be powdercoating the sterndrive a good idea or are there better ways to protect the alu in my sterndrive.
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Best way to paint stern drive ?

Here is Mercs procedure, it's just a copy and paste from their Website

Refinishing procedure:

This procedure should be used in refinishing MerCruiser sterndrives and transom plates. This procedure will provide the most durable paint system available in the field. The listed materials should be purchased from a local DITZLER AUTOMOTIVE finish supply outlet. The minimum packaged quantity of each material shown is sufficient to refinish several sterndrives and transom assemblies.

1 QT. DX-533 Alumiprep #33 metal preparation
1 QT. DX-503 Alodine #1201 conversion coating
1 QT. DP-40 Non sanding Epoxy Primer zinc chromate primer
1 QT. DP-401 Catalyst for DP-40
1 QT. DAR-9000 Acrylic Enamel-black topcoat
1 Pt. DXR-80 Delthane Ultra-additive for acrylic enamel
1 QT. DTR-602 Acrylic Enamel Reducer-temperature range 70-90 degree F.

PROCEDURE:

1. Scuff sand to remove all blistered paint and roughen factory finish. Remove sanding dust.
2. Follow manufacturer's recommendations and instructions on the individual containers.
3. Apply DX-533 (Alumiprep #33) to clean and condition the aluminum.
4. Apply DX-503 (Alodine #1201) brush on chemical conversion coating for aluminum.
5. The DP-40 (Epoxy Chromate Primer) mixed with DP-401 Catalyst can now be applied. A .75 mil film build is recommended.
NOTE: Allow 30 minute induction period for permeation of the epoxy chromate primer and the catalyst prior to application.
6. The topcoat consists of DAR-9000 Acrylic Enamel Black and the DXR-80 Delthane Ultra additive, and DTR-602 Reducer. It is a polyurethane acrylic enamel system which provides fast drying, durability, high resistance to corrosion and good color and gloss retention.
7. The type of spray gun used will determine the proper reduction ratio IMPORTANT: DO NOT use any type of aerosol spray paints, as the paint will not properly adhere to the surface, nor will the coating be sufficiently thick to resist future paint blistering.
NOTE: DO NOT PAINT SACRIFICIAL ANODES.
 
Fishermark

Fishermark

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Joined
Oct 19, 2003
Messages
5,627
Re: Best way to paint stern drive ?

I wouldn't think powdercoating would be an option as it has to be baked on at a high temp. I would think it would need to be completely disassembled to do that.

Here's an article which gives info on painting your outdrive:
http://mercstuff.com/painting.htm
 
T

tweakerwes

Recruit
Joined
Jan 27, 2007
Messages
2
Re: Best way to paint stern drive ?

thx for the info.

I know that powdercoating needs to be baked at high temp. But the stern drive is already completly disassembled.
 
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