trim cylinders with no holes for anode.

[kmd007]

Hi. I have a 1993 250 Express Cruiser with a Bravo II out drive. I purchased an anode kit and it has 2 for the trim cylinders. My trim cylinders do not have any screw holes. There are 4 holes there, but not threaded. I purchased the boat in September and had the boat power washed by the marina when winterized, so I don't know if there were any on there somewhere to begin with. Is this typical for an older Bravo II? Attached is a photo of the trim cylinder.
The boat does have a mercathode system, but I haven't checked to see if it works. Since there is no corrosion on the outdrive, I suppose there were "strap on" anodes attached, or perhaps the mercathode is working. Do I need trim cylinder anodes if the mercathode system is working? I am about to launch the boat in a week or so, so I just want to get all things in order. Any insight is greatly appreciated.

Thank you

 

[Lazy Daze]

The holes you see are for removal/installation of those caps.

Yes, you could add clamp-on anodes. Especially if you're in salt (you didn't mention, though).

 

[kmd007]

Sorry. I'm am in salt water. And thanks!

 

[Lazy Daze]

Sorry. I'm am in salt water. And thanks!

sure!

 

[Angus]

Our 93 Bravo has no provisions for those anodes as well. I was told that not all Bravos had them. I did replace the other anodes as well as the trim tab anodes.

 

[Bt Doctur]

You can replace the end caps to allow zincs there, caps are about $50 each, easy to swap out.

 

[Woody]

Hi. I have a 1993 250 Express Cruiser with a Bravo II out drive. I purchased an anode kit and it has 2 for the trim cylinders. My trim cylinders do not have any screw holes. There are 4 holes there, but not threaded. I purchased the boat in September and had the boat power washed by the marina when winterized, so I don't know if there were any on there somewhere to begin with. Is this typical for an older Bravo II? Attached is a photo of the trim cylinder.
The boat does have a mercathode system, but I haven't checked to see if it works. Since there is no corrosion on the outdrive, I suppose there were "strap on" anodes attached, or perhaps the mercathode is working. Do I need trim cylinder anodes if the mercathode system is working? I am about to launch the boat in a week or so, so I just want to get all things in order. Any insight is greatly appreciated.

Thank you

Looking at the picture it doesn't look like you've had a corrosion problem without them. If it ain't broke don't fix it

 

[kmd007]

That had occurred to me, but not sure if the previous owners used shaft anodes. I'll probably get those just to play it safe. Thanks.