Upper casing:Paint bubbles and aluminium rust

[axolotl98]

My trusty Yam 115 Mod. 1993 is starting to show some aging signs.
The aluminum casing under the bottom cowling has started to rust, showing this characteristic whitish powder at specific points where the paint is peeling off.
Is there anything that can be done to stop or even reverse this process?

Thanks

[robert graham]

Sand it, primer and paint....Advance Auto has a can of spray paint called Metallic Grey-Blue that's a pretty darn good match for the Yamaha color....

[TownsendsFJR1300]

Yepper, ^^^. Just make sure you get ALL the corrosion out or you'll get to do "a do over."

[mjf_1955]

What do you recommend as a primer?

[robert graham]

You can get a spray can of grey automotive primer at Advanced Automotive...sanding and preparation will be key to a successful paint job...

[99yam40]

that is not good on aluminum

[mjf_1955]

99yam, what do you recommend as a primer for aluminum?

[TownsendsFJR1300]

Rust-Oleum Self-Etching Primer - Walmart.com

[99yam40]

zinc chromate is what I have read about and used in the past

Painting New and Bare Aluminum | The H.A.M.B.

[pstephens46]

Holy Crap!!! You guys have no idea of the things I have to do on a daily basis. And now I have ANOTHER boat project!

[mjf_1955]

Townsends, 99yam, thanks for the info

[TownsendsFJR1300]

We used zinc chromate on the Suzuki LU we re-welded (after disassembly). It was spotless clean before slipping the prop shaft back in but small sections of it easily scruffed off.

Outside, where the weld was(and ground down), it seemed to stick a bit better..

[zenoahphobic]

Holy Crap!!! You guys have no idea of the things I have to do on a daily basis. And now I have ANOTHER boat project!

I'd rather work on my own 'toys' than working on other peoples stuff and then pay someone else to do mine. Depends entirely upon your earning rate (favours or frendlies have value too).

[throrope]

How do your anodes look?