YES, YES! EXACTLY! I had watched this exact video before blasting. He makes no mention of carb cleaner and that's why I think carb cleaner should be locked away for blasting. In hindsight, I would have only blasted, with no chemicals. I'd use my picks to clean out heavy gunk, and then just blast/vacuum some more, leaving the chemicals locked up.

 

 

Cool video. I wonder if you could also rotate the valves 180 degrees and reblast ? Just to reach any crud that is missed.

 

No you cannot. Heaven knows, I desperately needed to in my engine though. The valves won't turn (unless you tried to force them w/pliers; of course nobody would consider that though), nor is there enough space to do much in the port. My only option was to take a copper coat hanger (copper is softer than steel/aluminum, thus less likely to scratch anything), with a tiny bend in the end. I then used it to pick out pieces hidden in the shadow of the valve stem. There was actually a fair bit in the stem shadow that needed attention (i.e., it was equally gunked behind there).

 

I even devised a slick setup like shown in this video, with a fabricated plate of MDF wood bolted to the head. It worked great.

 

I think our tanks are made from a different type plastic.

 

Lost you on what you just said.
You used chemical to clean the valves plus walnut blasting, but you fabbed up this dry type system ?
On a side note, wish someone that knew 3D printing could make an adapter port so you could blast and vacuum these engines. I would gladly pay for one.

 

I first walnut blasted a cylinder and I used my wooden MDF jig to mount onto the cylinder head mounting face, just like you saw in the YouTube video I shared of another person. The jig allowed me to attach my ShopVac to keep the media from blowing in my face and engine compartment. After that, I removed the MDF jig and did final cleanup using carb cleaner.

 

So you're the guy on YouTube ?

 

No that is not me. Before starting the project, I was browsing this forum looking for tips and found that person's story here, and hence his video(s) too.

I do however, have pictures of my own MDF jig if folks wanted to see it.