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Old 05-20-2019, 03:34 PM
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Default Using only 5 gallons of Evaporust to clean a 327 block!

I first learned of Evaporust on this forum when Charley mad a post several years back. Here is a tip for a way I was able to use one 5 gallan container to submerge an engine block.

https://youtu.be/LH5GwVC6zsk

I hope the link works and this video can help a few projects down the road.
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Old 05-20-2019, 04:02 PM
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Nice,when you submerged the block the 2nd time,did you use the exact same Evaporust,or open up the 2nd container?
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Old 05-20-2019, 04:17 PM
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I re-used the original evaporust. By the end of the 7 days, I feel it was pretty black and spent- but there was an above average amount of rust on this block.
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Old 05-20-2019, 08:15 PM
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Great experiment - I'm definitely gonna try this, thanks!
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Old 05-20-2019, 08:40 PM
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Nice save on a scarce Chevy II block.
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Old 05-21-2019, 05:22 PM
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Paul,is it a 350cid. or a 327cid. block?
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Old 05-21-2019, 05:59 PM
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I have derusted many an item using muriatic acid, which is HCL, I diluted by at least 75% (3 parts water to 1 part acid), of course. I have also used straight vinegar. A little slower, but result the same. I can buy a gallon of white vinegar for a little over a $1 at the $ store. The acid is maybe $5 for a gallon, but makes 4 gallons. I have not used Evaporust. Can anyone tell me if they have done both, Evaporust vs. HCL, and how they compare?
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Old 05-21-2019, 06:00 PM
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I mistakenly said 350 in the beginning of the video. It is a 327 block for a 67 Nova 275hp 4 speed.
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Old 05-21-2019, 06:23 PM
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For me the big value is the fact is that Evaporust only eats rust!

If the rust is not equal in all areas, how do you feel about continuing to eat away at good clean metal- such as the stamped pad area since many people clean it to help I'd a block. The rest of the block is still rusty. What about loosening lifter bores?

If I can use a $70 bucket of evaporust, vs a $5 investment t of you favorite acid, I'm gonna choose the one with lower risk. Once the threshold is closer to a margin of $500 vs $5, I may sway my choice, but that was the point of my video. You really can make the $70 bucket go all the way.

Projects like this depend on weather and my free time. I could confidently leave the block in the Evaporust and not do any damage if we had a rainy spell or my schedule got too busy.

Here are some videos using other popular methods. I trust any could work with the right amount of attention and car through the project.







Quote:
Originally Posted by bbbentley View Post
I have derusted many an item using muriatic acid, which is HCL, I diluted by at least 75% (3 parts water to 1 part acid), of course. I have also used straight vinegar. A little slower, but result the same. I can buy a gallon of white vinegar for a little over a $1 at the $ store. The acid is maybe $5 for a gallon, but makes 4 gallons. I have not used Evaporust. Can anyone tell me if they have done both, Evaporust vs. HCL, and how they compare?
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Old 05-21-2019, 09:16 PM
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Paul,

Great video you did there...can you tell me where to get one of the bins you used to do the

rust removal?

Dave
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