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what works best to derust engine block??

SELLERSRODSHOP

SELLERSRODSHOP

Well-Known Member
i guess ford saves about 25 cents by sending new cars out without painting the engine blocks. whats the best way to clean the rust off for paint? i have one of the vacuum blasters like this that i might try,
spot-blaster-cabinet.jpg


just need to make sure everything is sealed up good so no stray sand gets somewhere it doesnt belong. any other good methods??

IMG_2417.jpg
 
well steve
I am thinking you are not trying to tear it down so hot tanking it is out of the cards , isn't that the Aluminum heads and block. since its the gt-40P? so a whire wheel might be abrasive your blaster might work depending on the media. aluminum is a lot different than cast iron..I am sure that block will look 100% after you prep it and paint it.
 
isn't that the Aluminum heads and block. since its the gt-40P?
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Stock GT40/GT40P's are steel heads. I'd be pretty leery about blasting a built motor. But if you take the upper intake off and tape over the ports (masking tape actually works pretty well when blasting), cover the exhaust ports well, put bolts in all the threaded holes, cover all the other openings... I guess I'd give it a shot. Don't think it would be much worse than a wire wheel as far as dust/debris getting into unwanted places
 
Sorry about that. Yes, a wire wheel probably is too much for aluminum. I was thinking of a steel block and heads.
 
I wouldn't even think of sand blasting an engine unless it was going to be tore down anyhow. Only thing I'd consider for media is baking soda, which may not be that effective on the rust.

I would try that stuff Ryan linked before I tried blasting it.
 
"rsalway" said:
monkeystash, does that stuff work as well as they claim it does? Looks like some pretty good stuff.
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Yes, I soaked small parts in a tub of it and they came out clean. You'd have to get a bit more creative for an entire engine though. Probably like a recycling waterfall type thing that could keep pouring the stuff over the engine for sometime. Kinda like they do on the website with the rearend.
 
Since you are not tearing the motor down, I would spray the motor with lacquer thinner and scrub it as clean as you can, they apply a good 2 part self etch primer let it flash then seal it and spray a single stage paint and you are done. Rich.
 
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