New Z-Drive which anodes default installed

[juruca]

I have bought a new orginal mercruiser z-drive 1:81 RH numer 2A740770.

How do i know which types of anodes are installed ? alu, magnesium, zinc ?

Thx

 

[alldodge]

The type of anodes depends on what type of water you boat in

A Z drive being a cross over IMO with a inboard and outdrive I would use Aluminum

 

[juruca]

My boat swims in saltwater.....

I tought then i need the zinc anode..

But the question is what does mercruiser install default on the z-drive ?

 

[alldodge]

Merc made the drive but the boat manufacture would decide what to use based on where it would be used. Merc probably installed Alu just because it's most often used unless manufacture requested something else

https://performancemetals.com/pages/sacrificial-anodes-faqs

 

[dingbat]

My boat swims in saltwater.....

Straight salt or brackish?
I do both. Get better performance out of aluminum

 

[Lou C]

Isn’t “Z drive” Euro-English for outdrive?
Anyway I have used zinc anodes on my Cobra drive moored in salt water for years. They are deteriorate at the end of the season (6 months) but not even 50%, more like 20%. The only problems I have had are the aluminum eyelets on the end of the trim Ram rods. These don’t have anodes on them like Merc drives do. So when I rebuilt both rams this spring I replaced the ram rod & eyelet with hood used freshwater parts.
I think I could also use aluminum, might try that next year.

 

[juruca]

Straight salt or brackish?
I do both. Get better performance out of aluminum

Straight salt....

 

[juruca]

I discovered that due to the weight of the biggest anode(i dont know the name) on the alpha one gen 2 that my anodes are indeed alu, it seem the alu weights about 300 grams and the same zinc anode weights about 800 gram(europe). so all anodes on my outdrive must be alu.