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Micha
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Joined: 10/12/2007
Posts: 350

Will modern carb cleaning solvent (hydrochloride-something) damage the mazak casting of our carbs?
It is OK for modern aluminum alloys but can I dip my old Bing inside it for a day or two?
Thanks.

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Michael Steinmann
R51/3 1952
Engine Nr. 529466

EuroIron
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VBMWMO #7266
Joined: 04/23/2007
Posts: 414
Solvent to clean carburetors

I use Berryman's Hydroseal although todays very ineffective EPA friendly version will allow you to soak zinc or pot metal castings in them forever even in my powerful Ultrasonic cleaner

however, you can make it more potent by adding lye and I am sure some of the chemists may have a better suggestion

the old stuff would remove the skin from your hands

and blister or pimple a pot metal casting if left soaking overnight

and I mean really ruin it

the less potent stuff we now have here can be used for bath water and only has a chance if heated to nearly boiling temps and used in an ultrasonic

plastic beads in a blast cabinet does a great job of restoring the surface finish but it is a good idea to boil or ultrasonic afterwards to remove all traces

the caveat with plastic is you can't actually boil the traces away as they will melt inside the passages and wreak havoc so lower temp ultrasonic is the only viable way to remove them

number 10 glass beads do very well also

I do not know what Bing uses to "restore" carbs but I'd guess fine glass beads

good luck

Allan.Atherton
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Joined: 10/27/2006
Posts: 507
Re: Solvent to clean carburetors

"Micha" wrote:

Will modern carb cleaning solvent (hydrochloride-something) damage the mazak casting of our carbs? It is OK for modern aluminum alloys but can I dip my old Bing inside it for a day or two?

The carb cleaners that come in spray cans won't hurt the Bings. They will remove any residue that came from gasoline.
I have not needed or tried to soak my carbs more aggressive liquids. I think such solvents remove scale and oxidation and may open existing pinholes that otherwise might not be a problem. My R27 basket case had a carb that was dark and dirty and missing a few parts. I sent it to Bing for overhaul and it came back looking bright and new. Perhaps they used a strong solvent or a bead blast.

EuroIron
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Joined: 04/23/2007
Posts: 414
Solvent to clean carburetors

actually the stronger "solvents" clean much more thoroughly than anything in a spray can and actually seals the pores once cleansed then rinsed with hot water

which is why professional carb and injector shops use both it and ultrasonics

if chalky cancer is present, the "aggressive cleaners" combined with the ultrasonic will find it

and bead blasting sure will as well

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