Offshoreonly.com - Is there a cure for Aluminum Head corrosion?

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Quote:

Originally Posted by Budman II (Post 3744207)

Were these run in salt water? If so, I am with derek - you need closed cooling.

once or twice a year, but mostly in the brackish part of the Potomac river

Quote:

Originally Posted by Fenderjack (Post 3744487)

How long were those on to get that? Also they do make flushing kits to help

John jr

half of one season and all of last season and half of this season, until now. Yeah we are going to do the repair again and I am going to get that salt away flush kit. Like I said before the rest of the head shows little to no corrosion, just this spot.

Boy, I think those are the worst I have ever seen around our area. :( :( Usually they just get eaten up around the passage to the intake manifold. I know of several guys running aluminum heads in the same water and they are not having problems like that ? I will say that I think the Potomac and bay water is worse than ocean water as far as corrosion. Must be just the right mix :(

I mainly wanted to reply to your comment:

Quote:

Originally Posted by My Addiction (Post 3744096)

At the front of the motor there are no water passages into the block from the head,(why is this) so the it seems the water and whatever debris is in it just sits there and eats the aluminum.

What would happen if I just added(drilled) my own water passage to let the water flow into the block.

There are no water passages in the front in order to properly direct the cooling water. The water is pumped into the front of the block, travels to the rear and then up to the cylinder head. Back to the front through the head and out to the intake manifold thermostat crossover. If you drilled holes in the front it would allow some of the water to go straight up into the head and it would not properly cool the block or the heads.

Bill Koustenis
Advanced Automotive Machine
Waldorf Md

Thanks for the refresher on the flow Bill- was trying to remember how that worked...I get the intake passage corrosion issue as well.

Don't see you much over at the Camaro site anymore...of course not a lot going on I suppose...

Lane

Closed cooling would fix this... rather inexpensively considering.

I ran in salt with my aluminum head small blocks and never saw anything like that. My heads weren't anodized either.