Painting Outboard

[jamool]

Hello All

Has anyone successfully painted their outboard?

I was going to try and repaint my lower unit with the official Yamaha outboard paint. Any pictures of other paint jobs would be great to see.

[Doug_G]

Perfect preparation will be key.

[GordyP]

Nugent is your man, he's done some awesome looking jobs.

[beerbelly]

if you take it back to any bare aluminium you will have to use an acid etch primer on any bare aluminium before using a normal primer just a light wash coat of the etch is fine .upol acid 8 is a decent 1 pack etch that is available in aerosols

[jamool]

Originally Posted by beerbelly

if you take it back to any bare aluminium you will have to use an acid etch primer on any bare aluminium before using a normal primer just a light wash coat of the etch is fine .upol acid 8 is a decent 1 pack etch that is available in aerosols

Was going to use Zinc Chromate Primer?

[Doug_G]

Originally Posted by jamool

Was going to use Zinc Chromate Primer?

Not recommended on aluminium. There is a special self etching primer for that.

[nugent]

Originally Posted by GordyP

Nugent is your man, he's done some awesome looking jobs.

Done the odd one or two ,

Before n after pm on way

Ed.

[nugent]

Originally Posted by jamool

Was going to use Zinc Chromate Primer?

Zinc chromate is defo best way

Top coat 100% recommend acrythane A211 for best results. And longevity

[beerbelly]

Originally Posted by jamool

Was going to use Zinc Chromate Primer?

up to you mate I find it chips too easily. but every one has there own favourites and ways of doing things

[nugent]

Originally Posted by beerbelly

up to you mate I find it chips too easily. but every one has there own favourites and ways of doing things

Zinc chromate is best etch primer money can buy for Ali ?

We give a 5 year warranty on all our applications , bare ali yellow etch 2 coats primer 3 x top coat. Going no place trust me



PVB/zinc chromate coating specfically for aluminium. Can be used on other ferrous metals and non-ferrous metals, galvanising, etc.

[Doug_G]

From an electrochemistry perspective the zinc is more electropositive than the aluminium, therefore the aluminium will corrode preferentially over time. o)

[Landlockedpirate]

What do you guys use to get rid of the last really tough bits of original paint ? (The bits you cant easily sand or wire brush)

[nugent]

Originally Posted by Landlockedpirate

What do you guys use to get rid of the last really tough bits of original paint ? (The bits you cant easily sand or wire brush)

I just blast it ,, spoilt where I work

Failing that paint stripper

[paintman]

Originally Posted by Landlockedpirate

What do you guys use to get rid of the last really tough bits of original paint ? (The bits you cant easily sand or wire brush)

Patience.
(I SMART repair cars & caravans professionally & sometimes things take a bit longer, but the quality of the prep work will be reflected in the finished job)

[nugent]

Originally Posted by Doug_G

From an electrochemistry perspective the zinc is more electropositive than the aluminium, therefore the aluminium will corrode preferentially over time. o)

Would have to disagree sir,

Aluminium

For aluminium and its alloys, although the clean surfaces are easily coated and adhesion is excellent, performance can be upgraded using a proprietary zinc chromate conversion coating.

[Landlockedpirate]

LOL

Any special kind of stripper (besides blonde, obviously )

[beerbelly]

local powder coaters use zinc chromate on wheels and swear by it . iv had wheels done of them and they have chipped. wheels I have painted myself and used DuPont 635 2k as an etch never had any problems .I was only offering advice for a diy job based on my own experience

[nugent]

Originally Posted by beerbelly

local powder coaters use zinc chromate on wheels and swear by it . iv had wheels done of them and they have chipped. wheels I have painted myself and used DuPont 635 2k as an etch never had any problems .I was only offering advice for a diy job based on my own experience

No probs , as your self can only vouch from my own experience , Most etch used is over applied in my experience ,,and this is a big no no,, Enjoy your night sir Ed

[jamool]

read somewhere that someone used a propane torch to warm the metal and get a glossy appearance. Have you tried this?

[nugent]

Originally Posted by jamool

read somewhere that someone used a propane torch to warm the metal and get a glossy appearance. Have you tried this?

On plastic bumpers and similar products

Using a hot air gun. You can get it to go glossy again if mated off