Gel like substance in water neck?
 

I drained the water from my flathead so I could add small piece of SS pipe on top of thermostats to hold them in place and noticed some globs of gel like substance inside the water necks of each head (Vintage Edelbrock aluminum heads).

This motor was built 2.5 years ago and I have only started it up 2 since bringing it home. It’s only had distilled water in it. Also noticed a bunch of small whitish colored particles on the ground underneath truck that came out with the water. See pics.

Well I’ll add photos when the site will let me.

Re: Gel like substance in water neck?
 

I cannot load pics. I am getting blocked and access denied to Fordbarn by Cloudflare security when I click on the upload button..!!

Re: Gel like substance in water neck?
 

>>(Vintage Edelbrock aluminum heads).


Aluminum hydroxide forms a gel. White powder when dry.

Re: Gel like substance in water neck?
 

I would not leave water in there! You need some sort of anti corrosion stuff, antifreeze or what ever, but straight water will eat aluminum with electrolysis.

Re: Gel like substance in water neck?
 

So some sort of flush or clean out needed before adding antifreeze?

Re: Gel like substance in water neck?
 

At minimum I would flush with a garden hose, add some cleaner if you wish.

My last new motor I left water in just temporarily to be sure there were no leaks. "temporary" turned into about a year and a half. Like you, I saw somthin funny goin on in there and found that in that short time the aluminum custom radiator pipes were almost eaten thru in some spots. Anti freeze in it now.

Re: Gel like substance in water neck?
 

Re: Gel like substance in water neck?
 

Mixing different types of antifreeze together can cause a gel-like substance and ruin your engine. Perhaps this was done in the past.
https://www.bing.com/search?q=mixing...ANAB01&PC=HCTS

Re: Gel like substance in water neck?
 

It’s only had water in it from day one. Plan to flush block. I ordered a product called No-Rosion to add to REverse osmosis water to use as my coolant, corrosion resistance and lubricant.

Www.norosion.com