Intake manifold cleaning

Cougar Community Classic Cougar Maintenance Restoration and Repair
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Any suggestions on the best way to clean this intake? My thought process is to hot tank it, 55 gallon drum of evaporust, power wash and blow dry.

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I bet that weighs a TON.

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Yes, yes it does! On second thought, it’s getting lighter as I get older!

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Not the exact intake, but this is what’s inside…I’d pull the rivets to clean it

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Yikes - automotive Arteriosclerosis. Makes me want to remove the ‘battleship’ intake on my Big Block to completely clean it as well !

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I can’t believe how much carbon actually builds up in those things. Was a mixture of bad gas and bad oil from back in the day???

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Damn! I was wondering if I should take the shield/cover off, but after seeing that, it’s coming off! How did you remove the rivets? Grind off/drill out/unscrew? What did you re fasten it with? Are these the ones?

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yep

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I was able to get vice grips on them and unscrew both rivets! It wasn’t as bad as I had envisioned, just oily, greasy residue and no carbon or rust underneath. Probably reuse the rivets too..

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Now that the sheet metal pan is off you could have anchor, er intake sandblasted. I had this done on a cast iron intake and an aluminum intake.

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Reconsider that. Buy New. They’re a 1 use item. $8 for Rivets versus a possible rebuild :thinking:

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Solid plan, I just have to figure out which ones are the correct size on the AMK website.

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Fasteners are available at most commercial bolt & nut suppliers. Can be called drive-screws, u-drive screws.

The residue is from the oil vapors getting baked as they enter the pan area. The waffle shaped cast iron is where the exhaust passes through to warm the carb and gets up to exhaust type temperatures in that area.

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I’ve used a Dremel thin blade cut-off tool to first cut and used a flat-blade screw driver to remove them.

BTW: DO NOT bead-blast an intake manifold without removing this shield. Glass beads will get trapped underneath and you will wonder why your bearings didn’t last a hundred miles …

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I was able to remove them with vice grips by un screwing them. I am cleaning the intake by soaking in evaprust to remove rust/oxidation. Thanks