Closed Loop Cooling for 06 Maristar MCX

[Chief]

I have a closed cooling system (factory install) on my 06 MCX. If you would like me to take a picture of anything let me know.

That would be great Mike maybe the mounting of the heat exchanger and the hose connections. That will help with the install. I really appreciate the help.

[Engine Nut]

Engine: Where do you think I'm going to run into the biggest problem when installing. The Maristar has a lot of room in the engine compartment when I remove the dividers. Hell I can lay down on each side of the engine compartments. It is a half system since the the manifolds are one piece and thats all good with me since I am what you would call "analretentive" (spelling?) and always flush religiously when I even come out of freshwater. I use a product after a through flushing called "salt away" to leave in the block and manifolds. Should I still drain the manifolds with salt away filling the manifolds?

Thanks

The heat exchanger goes across the front of the engine... which is towards the back of the boat in a v-drive. It kind of tucks in under the flame arrestor on the MCX engine. There isn't a lot of room to make the plumbing connections and mount the tank in a v-drive with the engine in the boat.

The reason I suggested draining the one-piece aluminum manifolds is that there are plugs that are welded into the manifolds to plug up the holes that are used to let the casting sand out of the manifolds.Those plugs are not the same aluminum alloy as the manifolds and in fact are more electrically active than the manifolds themselves.If you remember 6th grade science, any time you have two dissimilar metals (the manifolds and the plugs) and an electrolyte (salt water) you have a battery. Eventually, the anode of the battery (the welded in plugs) gets consumed, resulting in water leaks in the manifold. I am not sure how "conductive" the salt away material is. If it was my boat, I would disconnect the hose that runs between the manifolds and let them drain.

Engine Nut

[Chief]

The heat exchanger goes across the front of the engine... which is towards the back of the boat in a v-drive. It kind of tucks in under the flame arrestor on the MCX engine. There isn't a lot of room to make the plumbing connections and mount the tank in a v-drive with the engine in the boat.

The reason I suggested draining the one-piece aluminum manifolds is that there are plugs that are welded into the manifolds to plug up the holes that are used to let the casting sand out of the manifolds.Those plugs are not the same aluminum alloy as the manifolds and in fact are more electrically active than the manifolds themselves.If you remember 6th grade science, any time you have two dissimilar metals (the manifolds and the plugs) and an electrolyte (salt water) you have a battery. Eventually, the anode of the battery (the welded in plugs) gets consumed, resulting in water leaks in the manifold. I am not sure how "conductive" the salt away material is. If it was my boat, I would disconnect the hose that runs between the manifolds and let them drain.

Engine Nut

Thanks engine, good point on the dissimilar metals. I may have to hire a midget for the install.

[michael freeman]

That would be great Mike maybe the mounting of the heat exchanger and the hose connections. That will help with the install. I really appreciate the help.

Sorry for the slow reply. I will try to take pictures tonight when I get home and post them between answering the door for candy goblins.

[Chief]

Sorry for the slow reply. I will try to take pictures tonight when I get home and post them between answering the door for candy goblins.

Not a problem. Thanks again.

[michael freeman]

Here is a picture of the top of the engine (top of picture is back of boat in V-drive):

[michael freeman]

Here is the intake into the engine:

[michael freeman]

This is me looking down between the air cleaner and the heat exchanger:

[michael freeman]

Here are the sides of the engine:

[michael freeman]

The other side of the engine:

[michael freeman]

I shoved my camera below the engine to see where the pickup lines are routed and got this:

[michael freeman]

I will be glad to take more pictures of specific areas if you need them now or as you dig into the project, just let me know.

[Chief]

I will be glad to take more pictures of specific areas if you need them now or as you dig into the project, just let me know.

Thanks Mike! Looks like a managble project.