Intake Port Carbon Removal
I decided to try my hand at carbon cleaning with walnut blasting media. It worked great and didn‘t cost much to get started. Like anything I had my apprehension before actually doing it, but I’m glad I decided to give it a try. Here are some photos of my setup and results.
Your results are remarkable. Is there carbon build up on the valve seats also? Is that another procedure?
I did find that things go faster and better if you do a little scraping and cleaning with a thin screwdriver or pick to knock things loose. I used a right angle pick to clean the area where the valve meets the seat. I couldn’t actually see the area where the valve touches the seat. An additional chemical cleaning such as an induction service might not be a bad idea to clean the contacting…
Where did you buy your set up? Mainly the gun for the blasting. I have a set up but we are not happy with the nozzle handle for shooting the media. HA! Zoom is helpful, "the original sandy jet" I'll start googling. Great results!
I bought the Sandy Jet F-90 off of Facebook Marketplace for $60. The nozzle was worn out so I replaced it. I taped a piece of straight radiator hose (about 3 “) to the shop vac hose that I put a hole in for the nozzle. I varied the position of the nozzle, sometimes on top, sometimes on the sides. The hose does a good job sealing against the head surface.
Nice job! Creative way using shop vac. I have used my Motorvac as a maintenance but haven't taken pictures of before and after.
Just buy the oem adapters for the shop vac. They are cheap at least from BMW for their cars they are.
We don’t work on BMW’s but I’ll keep your suggestion in mind.