Quote:
Originally Posted by drjekl
Soda blasting is great for soft/delicate items, albeit I wouldn't want that in the combustion chamber due to the reactive properties of sodium bicarbonate (having said that it would only be a small amount....) that's where walnut shells are recommended as it easily burns off during the combustion proces and is extremely soft and wont score the bore or cause any components to corrode etc
I'm also sure the walnut shells would be slightly more abrasive to help remove carbon deposits, but i can only speculate as i haven't used either medium.
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you're meant to blast with the valves closed anyway i believed? with a decent vacuum attached to it as well
i know the walnut shells are much harder than bicarb, but whether or not it would matter for this job?
i have more general uses for a soda blast setup, so just curious - if soda blasting would work, i'd get the machine sooner hah