pjv911
Member
- Jan 25, 2014
- 116
- Boat Info
- 1998 Sundancer 330
- Engines
- 2016 385ci 6.3
390hp 479 ft tq Modified Scorpions
4V magnums
1.5 Velvet V drives
I just picked up a Donzi 21'. I am building a 572ci big block for it.
The internet seems to be all over the place on the subject of using aluminum in a salt water cooled engine.
Here is my question....
If I were to install Aluminum performance exhaust manifolds and an aluminum intake manifold would it make sense to also use aluminum heads?
I understand that the dissimilar metals in salt water actually become a battery and causes accelerated corrosion. Does it make sense to also have cast iron heads sandwiched in between the aluminum? Im thinking that might be more of a mistake?
Lastly the new style multi-layered rubber/stainless head gaskets do a very good job to stop the galvanic corrosion between an iron block and aluminum heads.
I recognize that a closed cooling system will make problems go away but that is not an option and the boat will be trailered and flushed every use.
Hoping someone with a bit of knowledge on this subject will offer some advice.
The internet seems to be all over the place on the subject of using aluminum in a salt water cooled engine.
Here is my question....
If I were to install Aluminum performance exhaust manifolds and an aluminum intake manifold would it make sense to also use aluminum heads?
I understand that the dissimilar metals in salt water actually become a battery and causes accelerated corrosion. Does it make sense to also have cast iron heads sandwiched in between the aluminum? Im thinking that might be more of a mistake?
Lastly the new style multi-layered rubber/stainless head gaskets do a very good job to stop the galvanic corrosion between an iron block and aluminum heads.
I recognize that a closed cooling system will make problems go away but that is not an option and the boat will be trailered and flushed every use.
Hoping someone with a bit of knowledge on this subject will offer some advice.
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