Page 1 of 1

Recoating the lower water pump chamber on Yamaha 9.9

Posted: Thu Mar 01, 2012 1:37 pm
by Magic Time
The photo is of the lower water pump chamber before it was cleaned out.
The next photo is after it is cleaned.
Note there is some of he protective coating warn away and some pitting.

Does any one know what is used by Yamaha or can you suggest something to coat this chamber to give the metal a little protection. I.E. water proof paint ?

Any suggestions please!

Re: Recoating the lower water pump chamber on Yamaha 9.9

Posted: Sun Mar 04, 2012 10:59 pm
by Allezcat
Magic Time,
I had a similar situation but mine was a saltblock. Yours appears to be some sort of marine growth. You might want to look at Interlux Trilux 33 antifouling paint (spray can) which is made for aluminum outdrives. They also recommend a Primocon primer but these products are very pricey. In new West Marine catalogue pg271.
I think the factory paint may be some sort of zinc-chromate.
Chet

Re: Recoating the lower water pump chamber on Yamaha 9.9

Posted: Wed Mar 21, 2012 5:43 pm
by Magic Time
Thanks Chet
The paint I use to recoat with is zinc Chromate Professional Primer in a spray can by Scepter Corp.
I dont know if I can coat over this with your Anti fouling but what I used is a primer so maybe it will be ok
thanks for your imput
MT