Carbon Cleaning Tools

Hey guys, anyone ever try to modify the BMW walnut shell blasting tool for use on the V10? Seems like a much more efficient way to clean the valves. Anyone have the dimensions of our intake ports? Are they close to the BMW port sizes? Anyone make their own tool? I’ve been kicking around some ideas. Any one add an extension to their blaster to get down into the port better? Can you use a piece of copper pipe or will the walnut shells wear the pipe too quickly. SST pipe?

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