Soda Blasting Carbs

Keep us informed,sounds very promising.Probably overkill,now thats the wrong wording but keep your thumb on the kill switch till your sure its fine.
 
I recently cleaned a set of carbs using Australian CT18 for the external surfaces and carb cleaner and compressed air internally and they worked well after a 36 year rest.
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I have also been looking into the ultrasonic issue after talking with Red some time ago. The transducers have quite a bit to do with it and the companies advertising the Chinese baths don't give much info, so I have been looking at second hand medical ones which have up to 4 transducers that blast a range of particle sizes depending on frequency. This may be as important as the solution issue...not sure yet. Anyone know  more?
Ian 
 
"This may be as important as the solution issue...not sure yet."

yes it is. my first unit had 4 high freq transducers until they finally died
replacement was nearly as much as a new machine so i bought an elma
http://www.elma-ultrasonic.com/en/products/ultrasonic-units/elmasonic-s/elmasonic-s100h.html
factory refurbished from my dealer in san antonio
much lower frequency transducers
difference is night and day, works much quicker than the old one
$450. i feel like i stole it  8)
(they've got one big enough to drop cases into
but $3k is a bit more than the budget allows)

heater much stronger, too
i used to use a pinch of soda in the bath to help the detergent
if the solution is too hot the alloy bodies get turned a dark grey  :o
too hot and too alkaline

switched to a couple capfuls of b-12 carb cleaner instead of soda
bodies came out sparkling
the greyed body will get soda blasted then run through warm soapy water in the tank
and see if that takes the grey out before resorting to something more radical
 
Stefan,

may I suggest a company called Kexel (http://www.kexel.de/) for the coating? They have very long experience in coating oldtimer parts (especially engine parts) with either sintered PTFE or carbon (depending on if low friction or improving the surface hardening is what you are looking for). They are not as expensive as they look like (for a complete engine treatment, they asked 700? from me, which was for Pistons, Cams, rods, crank, cam sprockets, Primary drive and some other parts. Not sure it included the gearbox...).

I must admit that up to now the engine is still in one piece that I was looking for them doing the treatment and that the 700? are 2 years back, so things might have changed. But still worth considering...

HTH

Lothar
 
Now I know why my Amals turned a gunmetal shade of grey when I first used my tank..... :o.

I acquired my used Elma ultrasonic tank & chemicals in payment for a job a while ago and was real keen to use it on my Triumphs carbs. I wound the temperature up thinking it would do a better job and was mortified to see the carb body had changed colour when i lifted it out. I did the other carb the same way just so they matched. Very clean and didn't look too bad after all. I want to get the carbs on the SF right though.

Stuart
 
Hy all,

just got my engine parts back. They were blasted by a company called www.wetblast.nl The owner uses pressurised hot water with a chemical cleaner. The result is a very good, non aggressive clean of the aluminium. Any faults, scratches, dents etc. will become clear for the naked eye. No need to block any passages, holes, threads or the like.



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Regards, Melle
 
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