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View Full Version : Questions on a 460 build and aluminum heads


Flyinbowtie
09-22-2011, 08:52 AM
So i finally have a reason to post in here.
I have purchased and am having built a set of aluminum heads for our 460. I have been told by a couple of folks, (and a couple other disagree) that I should coat the insides of the water jackets on these heads with epoxy to prevent electrolysis from eating the heads. This boat will rarely, if ever, spend the night in the water, and I plan to install drains on the block to drain it after every use.
I don't mind doing the epoxy deal if it is necessary, is it?
Any and all input will be appreciated.

obnoxious001
09-22-2011, 11:04 AM
So i finally have a reason to post in here.
I have purchased and am having built a set of aluminum heads for our 460. I have been told by a couple of folks, (and a couple other disagree) that I should coat the insides of the water jackets on these heads with epoxy to prevent electrolysis from eating the heads. This boat will rarely, if ever, spend the night in the water, and I plan to install drains on the block to drain it after every use.
I don't mind doing the epoxy deal if it is necessary, is it?
Any and all input will be appreciated.

Interesting idea, I don't know that I have ever heard of that actually being done. A couple of companies will hard anodize the heads prior to machining them. I know that Dart and Edelbrock have Chevy "marine" heads with the hard anodizing, and AFR will do it, presumably on any of their heads.

I am in the process of rebuilding my own personal turbocharged engine, that was run in my Schiada 6 years in various different water ways, including salt water at Mission bay for at least two different national events. The engine was flushed(carefully) with fresh water at the end of each day it was ever run in salt, but other than that never drained or flushed.

Bottom line, the heads are in very good shape, very little evidence of corrosion. They are raw aluminum Dart 360 "race" heads.

Gelcoater
10-03-2011, 08:04 AM
I remember hearing about a company doing this on intake manifolds many years back,thought it was Edlbrock? I would think anything you can do to slow down the process would be a good thing.
I do however wonder if the epoxy would slow down heat transfer as it is a barrier between the coolant and metal?

Hey FBT,lets see some pics of your project,we love threads like this:thumbsup

Flyinbowtie
10-03-2011, 02:17 PM
Can't seem to get a consensus on this..
Glecoater I stated a thread awhile back on it in the jet section...it is just a little boat build, something that has been in our family since new.
I am in the gathering ideas, plans and parts mode, hope to tackle it hard this winter and get it back together by next Father's Day.
I have a heated shop to work in, and this will keep me from going nuts this winter.
We have the 3 cords of wood in, the propane tank is filled and I need about 2 more weeks to get things shipshape and then i can hunker down.

Yellowboat
10-03-2011, 02:30 PM
Can't seem to get a consensus on this..
Glecoater I stated a thread awhile back on it in the jet section...it is just a little boat build, something that has been in our family since new.
I am in the gathering ideas, plans and parts mode, hope to tackle it hard this winter and get it back together by next Father's Day.
I have a heated shop to work in, and this will keep me from going nuts this winter.
We have the 3 cords of wood in, the propane tank is filled and I need about 2 more weeks to get things shipshape and then i can hunker down.

speaking of the wood, need anymore? the next job envoles taking out some long dead oaks.


you would have to come get it.

Flyinbowtie
10-03-2011, 06:50 PM
No Thanks, Tyler...appreciate the offer but I am down to splitting the pile...should have enough hardwood for at least 2 winters at this point.