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Gross heads

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Old 08-27-2020, 03:18 PM
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Default Gross heads
What is the prefered way to clean the interior of the heads from all the gunk? They are currently off the vehicle and I just want to get the burnt oil and other sludge out of them.
 
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Old 08-27-2020, 03:53 PM
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Have them hot-tanked.

Easy-Off Oven cleaner works good too.
 
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Old 08-27-2020, 05:00 PM
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I thought ez-off etched aluminum heads.
 
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Old 08-27-2020, 05:16 PM
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You have aluminum heads??
 
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Old 08-27-2020, 09:09 PM
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Are 4.7l heads aluminmum?
 
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Old 08-27-2020, 11:29 PM
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Purple power I used it to clean my parts when I rebuilt my engine.

https://www.google.com/search?q=purp...w=1164&bih=526
 
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Old 08-28-2020, 12:35 AM
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i thought the 4.7 heads are iron? Perhaps i am mistaken.

We have a spray gun that mixes a solvent with air from the compressor. We use simple green, mixed 1:1 strong with water, for washing most surfaces.
 
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Old 08-28-2020, 10:12 AM
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The 4.7 uses an aluminum alloy for the cylinder heads.
 
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Old 08-28-2020, 03:44 PM
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Simple Green eats aluminum. The military won't use it anymore.

http://www.chinook-helicopter.com/ma.../cleaners.html
 
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Old 08-28-2020, 07:23 PM
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Originally Posted by Vimes
Simple Green eats aluminum. The military won't use it anymore.

http://www.chinook-helicopter.com/ma.../cleaners.html
We use it on literally everything. But it gets washed down with brake clean after.
 
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