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Frank MXParts

How to remove black sticky $#*& from carb? [picture]

11 posts in this topic

Does someone know how I could remove this black sticky stuff from this carb? The previous owner must have had serious sealing issues :excuseme:

I can pry it off with e.g. a screwdriver, but it doesn't make the carb look any better afterwards :busted:

black.jpg

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Gonna have to scrap it off with a small pick or screw driver, thats about all you can do.

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That looks like silicone sealer. Most carb cleaners should break that down. Soak a rag with some and set the carb dirty side down on it for a while.

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You can try different chemicals to remove it like what was suggested, but what ever you use, I would remove the flat slide from the body first. They have a coating that tends to do funny things when chemicals come in contact with them.

As far as the chemicals go, try lye dissolved in Tetrahydrofuran. Kinda nasty stuff so use gloves and eye protection. If you can't find any of that, go for the usual; MEK, Toluene, Acetone, WD40.

Try this link: TankHardware

A solvent developed by PROSOCO is said to "digest" the cured silicone

elastomer.

Dicone NC15 Gel

Description and use

"Dicone NC15 Gel is a silicone "digestant", formulated to remove silicone-based sealants and adhesives, cured silicone elastomers and silicone water repellent overspray. NC15 is formulated to a gel viscosity for application to vertical surfaces and to allow for extended dwell times required to remove heavy sealant and adhesive residues.

Dicone NC15 Gel utilizes new solvent technology to dissolve cured silicone resins and polymers with a non-flammable, non-chlorinated and non-aromatic cleaning solution. Safer and more efficient than chlorinated solvents, xylene, toluene, benzenes, alcohols, and caustic solutions normally used for these applications.

Dicone NC15 Gel removes silicone residues from brick, concrete, natural stone and most glass surfaces. May damage metal, painted and synthetic finishes. Always test to confirm compatibility. NC15 is corrosive and should be handled accordingly.

Dicone NC15 Gel may be used to remove cured silicone from tools and equipment where immersion in Dicone NC9 or NC25 fluids is impractical. Apply the gel to caulking guns, pump dispensers and other application tools to loosen and remove silicone buildups. Refer to product data sheet for Dicone NC9 or NC25 for additional information on equipment cleaning applications."

It appears from the PROSOCO website, that they are an industrial

supplier. If you are serous about cleaning the cured silicone

completely (which you would want to do before attempting repair since

new silicone will not stick to old silicone), you may wish to call

PROSOCO to see if you can wangle a sample from them. Very often these

"new" cleaners are citric products which are increasingly used as

"poor" substitutes for the real stuff (toluene, acetone, MEK, etc.)

for cleaning up. You can reach PROSOCO at (800) 255-4255

Good luck with your project.

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Thanks for the replies, guys.

I'm definitely going to try some 'fluid', it'll make the work so much easier.

I'll post again after I've finished. And yes, I'm going to completely strip the carb before application :excuseme:

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Well, I never got as far as buying any chemicals...

I soked the carb in hot water and put a 'brush' on the Dremel. It came off quite easy. I had to repeat the process a couple of times. I then put the carb in the ultrasonic cleaner for the perfect finish :smirk:

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Hey use a dremel :smirk: I'd like to have me one of those ultra sonic cleaners. I've got one for cleaning brass for reloads but didn't even think about using one on parts.

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Well, I never got as far as buying any chemicals...

I soked the carb in hot water and put a 'brush' on the Dremel. It came off quite easy. I had to repeat the process a couple of times. I then put the carb in the ultrasonic cleaner for the perfect finish :smirk:

Thats the best way...freaking bunch of chemicals that are all cancer causing agents is never good for the long term of our health....B)

Elbow grease is usually worth its weight in living tissue.

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Elbow grease, yes. With a little help from my Dremel :smirk:

I absolutely love that thing.

The ultrasonic cleaner is great for cleaning parts, I use it with Simple Green and elevated temperature.

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I've been toying with the idea of building my own Ultrasonic Cleaner. It really isn't that hard from what I've gathered online.

Here is a good explanation of how they work.

If you look up "How to build your own Ultrasonic Cleaner", you'll find a lot of different web pages that will show you how. It really is very simple.

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