Carbon buildup cleaning - walnut blast?

[5800]

Planning to clean the intake valve... Is walnut shell blasting a good option?

Anyone tried it before? Please share and advise where i can find this service at johor bahru

Thank you

 

[jarance]

Where to find the walnut? Maybe we can use rice husk..

For more info check out this link.
http://www.e90post.com/forums/showthread.php?t=682116

Look like a lot of trouble to do this work with the dismantling of the top head for the blasting.