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08-12-2017, 07:20 PM | #1 |
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Join Date: Apr 2016
Location: Oklahoma City, Okla.
Posts: 8
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A window into a rusty head
My radiator is being recored, and while it's out I decided it was time to clear the block of rust so I don't plug up the new core.
I'm out of metal, so I used a piece of acrylic to seal off the water pump hole while the Evaporust coolant cleaner does its job. I bought a concentrate that's diluted with about 1.25 gallons of water in this case, but it would make up to 3 gallons. It's kind of nice to be able to see inside while it's working. Before adding the chemical, I flushed the system with a garden hose. For those who may want to try this in the future, I used a 1-1/2" rubber cap to block off the inlet (the kind you might use on a sewer line), and a 1-1/2" test plug on the outlet at the top (as seen below). I used some Permatex on the acrylic, but not enough since it leaked a little when the outlet was open to the air. Plugging the outlet stopped the leak. This particular test plug can also be drilled out, and a garden hose threaded on to flush the system afterward. So convenient! I'll let it sit about 2-3 days with the rust remover in there and update the photos. Also adding a temperature gauge and a new fan while it's all apart. I've heard a lot of horror stories of old fans losing their blades through the hood or radiator. Didn't want to take that chance!
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Michael D. Oklahoma City 1930 Model A Coupe 1976 BMW R90/6 1968 Datsun Roadster Insta: @downesphoto |
08-12-2017, 07:30 PM | #2 |
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Join Date: May 2010
Location: Between Seattle & Tacoma
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Re: A window into a rusty head
Interesting you just posted this. I'm just fixing to clean a head myself, and was contemplating how to block off the holes. Thanks for posting
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08-12-2017, 08:01 PM | #3 |
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Join Date: May 2010
Location: Mpls, MN
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Re: A window into a rusty head
A magnetic block heater will keep the liquid warmer, so it works better. I like what you've done.
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08-12-2017, 08:39 PM | #4 |
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Join Date: Apr 2016
Location: St Clair, Michigan
Posts: 395
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Re: A window into a rusty head
Please keep us updated and post many before and after pictures.
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Isaiah B. 1928 all metal Tudor |
08-12-2017, 10:25 PM | #5 |
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Join Date: Apr 2016
Location: Oklahoma City, Okla.
Posts: 8
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Re: A window into a rusty head
That's a great idea, but I'm not sure we can get those this far south. But I have family in your neck of the woods, maybe they can bring one down when they visit next week.
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Michael D. Oklahoma City 1930 Model A Coupe 1976 BMW R90/6 1968 Datsun Roadster Insta: @downesphoto |
08-12-2017, 11:49 PM | #6 |
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Re: A window into a rusty head
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08-13-2017, 12:08 AM | #7 |
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Join Date: May 2010
Location: Camarillo, CA and Pine Grove, CA
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Re: A window into a rusty head
I used RUST 911. Mix it, add it, and drive for a few days. Sparkling clean.
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1921 Runabout 1930 Tudor Early 1930 AA Speed costs money. How fast do you want to go? |
08-13-2017, 10:12 AM | #8 |
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Join Date: Dec 2010
Location: FRESNO, CA
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Re: A window into a rusty head
IF you're married, DON'T mention GIRLFRIEND
Bill Widowed
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"THE ASSISTANT GURU OF STUFF" |
08-14-2017, 11:00 PM | #9 |
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Join Date: Apr 2016
Location: Oklahoma City, Okla.
Posts: 8
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Re: A window into a rusty head
Here's the update after about 48 hours. It's getting cloudy and hard to see farther into the head, but the area around where the impeller would be appears to be nearly rust-free. I may leave it until the end of the week to make sure it's completely clear of rust. If I had heat on it, I'm sure the process would be much faster.
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Michael D. Oklahoma City 1930 Model A Coupe 1976 BMW R90/6 1968 Datsun Roadster Insta: @downesphoto |
08-14-2017, 11:33 PM | #10 |
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Join Date: Dec 2011
Location: New hope Minnesota
Posts: 742
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Re: A window into a rusty head
I had a timing cover that was a total ball of rust, let it soak 24 hrs. in Evaporust, came out looking like new.
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08-15-2017, 08:22 PM | #11 |
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Join Date: Apr 2016
Location: St Clair, Michigan
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Re: A window into a rusty head
Anyone ever use Thoro-Flush from Snyder's? I was thinking of trying some but please let me know if y'all have used something else better.
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Isaiah B. 1928 all metal Tudor |
08-16-2017, 11:04 PM | #12 |
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Join Date: Apr 2016
Location: Oklahoma City, Okla.
Posts: 8
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Re: A window into a rusty head
Here we are at about 4 days (96 hours or so).
It's so dark now that I can barely make out the piece of structural metal just behind where the water pump shaft would be. And that's only a few inches from my window. So, clearly a big change in the last 2 days. Before I could see quite a ways into the head, but no longer. I'm not in a big hurry, so I'll leave it in there a few more days to make sure all the rust is dissolved. Unfortunately there probably won't be any more photos unless enough of the iron oxide settles to the bottom and the solution clears up.
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Michael D. Oklahoma City 1930 Model A Coupe 1976 BMW R90/6 1968 Datsun Roadster Insta: @downesphoto |
08-17-2017, 11:07 AM | #13 |
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Join Date: Dec 2011
Location: SW Idaho
Posts: 970
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Re: A window into a rusty head
I would like to suggest that a Gano coolant filter should be used in the upper hose for some time after completion of the chemical treatment. The rust buildup at the rear of the block is usually more than what anyone would imagine. More rust will come loose once coolant is added and the engine is run out on the road, heading,of course, right into the radiator that has been "cleared" of rust. The filter will catch the rust and can be seen and flushed out until it stays clean. Try a search here for Gano. Flushing after treatment can't get to the rear of the block enough to get it all. That's why it builds up there and causes heat issues.
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08-17-2017, 08:37 PM | #14 |
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Location: Camarillo, CA and Pine Grove, CA
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Re: A window into a rusty head
I used a piece of a panty hose to catch any debris.
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1921 Runabout 1930 Tudor Early 1930 AA Speed costs money. How fast do you want to go? |
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