Ride and duct plate

[Haycor]

Hi
My metal surrounding the jets are really corroded. I don’t want to replace them if I don’t have to, I’d prefer to refinish them. Anyone ever done this? Like powder coat or something? Thank you

 

[mrcleanr6]

Yes remove them. They need to get media blasted and epoxy coated. Powdercoat is terrible for corrosion resistance on aluminum if in a salt environment.

 

[Haycor]

Yes remove them. They need to get media blasted and epoxy coated. Powdercoat is terrible for corrosion resistance on aluminum if in a salt environment.

Thank you. This is for fresh water.

 

[tdonoughue]

That looks pretty pitted to me. Had someone else with a similar problem here and I learned from @zipper, I believe, that there are anodes on the ride plates. You may want to check those to ensure that they are not gone... somewhere here there are pictures of where they are, but I remember they were hidden in one of the nooks.

Edited to add: check this out: https://jetboaters.net/threads/intake-grates-are-corroded-and-looking-for-options.30380/#post-493905

 

[zipper]

There seems to be an issue with the powder coating or anode placement on some m/y 14/15 yamaha ride plates. I don't know if the anode is missing or corroded away. That is 3 boats in recent months from those years that we have seen with pitted aluminum ride plates. My 07's ride plates have barely a chip missing and the rideplate anode is very visible. From below you can see the mounting screw for an anode. Can't see if one exists on top. The ride plate should not look like that.

 

[Haycor]

There seems to be an issue with the powder coating or anode placement on some m/y 14/15 yamaha ride plates. I don't know if the anode is missing or corroded away. That is 3 boats in recent months from those years that we have seen with pitted aluminum ride plates. My 07's ride plates have barely a chip missing and the rideplate anode is very visible. From below you can see the mounting screw for an anode. Can't see if one exists on top. The ride plate should not look like that.

View attachment 140087

Thank you. Any suggestions for refinishing it?

 

[zipper]

Thank you. Any suggestions for refinishing it?

This is not something I have done. My ride plates are in good shape. First thing, find out what is attached to the screw I pointed out in the picture. There is no continuity between your ride plates and the pump anode. It is also this way on my boat, but I can see my ride plate anodes. You need to fix the real problem first, lack of anode protection, before you refinish them. Anyway, if I were to do the repair...I would remove all that powdercoat from the pitted aluminum, have it stripped/media blasted. Mount an anode on the ride plate and tape it off so no paint blocks it's sacrificial lifespan. I would then apply an epoxy primer for aluminum to all surfaces followed by a 2-part epoxy colored barrier coat.
In my picture above, there may be no anode present at that mounting screw. There should be. It would be difficult to reach, in my opinion and I would consider mounting one on the bottom of the ride plate at that screw, low profile button type, just for ease of replacement when required, if it cannot be reached on top. That is how I would fix this issue. Yamaha has since added S.S. bonding cables between some of these parts for anode protection. Just don't get any paint between the anode and the ride plate. Hope this is helpful.

 

[mrcleanr6]

Blasting is a must to remove all the rotted aluminum in the pits. From that point the only thing that should go on metal is epoxy....period. It must be epoxy primed. From there you can put a topcoat over the epoxy primer but its really not necessary. Epoxy primer is the only paint you can put below the waterline and its 100% waterproof. Its also the only thing that is direct to metal other than self etching primer but that stuff is garbage and should not even be used in this day and age. I have been a professional painter in the marine industry for 25 years.

 

[Heizen]

For these situations, applying a rivet and sealant does the job. For boat hulls, however, it’s important to have a smooth surface in order to properly apply protective coats and such. If pitting is too severe, fillings can be used instead. Using a filler such as Bondo will allow the surface to be smooth.

 

[Scuba_ref]

Not gonna lie...thought the title of this thread was "Ride and Duct Tape"