English is a tough language to master, I have trouble with it everyday. No, the Kerosene is in my parts washer.
A common misconception about sandblasting is that it takes anything at all off the metal. You're setup might, but mine doesn't. Not one infinitesimal bit. I do not sandblast the shaft at all, and as I said, I sandpaper the inside of the rockers just to make sure there is no residue inside. That oil track inside needs to be clear. Way more damage is done during normal operation. There is zero wiggle. You can't change peoples experiences with sandblasting. All you can do is just know the method is solid if you do it right. The sand I use is the consistency of flour or powdered sugar. At 40psi it takes a long time to clean stuff, but nothing does a better job.
You can think you know if that makes you happy. I am not talking to you in my how-to article. Its not about using mic's either. Most home garage mechanics don't own one. This is for the guy with minimal tools and the desire to learn something new. I take all the parts to the machine shop for checking that stuff, and I HAVEN'T GOTTEN THAT FAR YET!! But from past experiences, I am well within tolerance. The rockers are rarely the problem on these engines, its the shaft being badly worn that causes problems.
Please lets not go down the sandblasting is bad road. I have corrected the How-To so the new guy doesnt get himself in trouble, and we can now move on. I wouldnt use anything else. Between the Kerosene, sandblasting, sanding with light paper, lacquer thinner, and compressed air, I am very pleased with my results. There is no way anything having to do with sandblasting will change any tolerances.
I am known for doing things a bit differently. Has to do with my lack of formal training and just figuring out what works and what doesnt. I am not pigeon-holed by following accepted procedures. When I learned about dropping the air pressure in the blast cabinet, then about the better air nozzle that about triples the air velocity for blowing the whole thing off when done, my problems were solved. 40 psi blasting the sand, a few hundred removing it. Please, just let the sandblasting thing go. How do you convince people that this isnt just about engine overhaul, its about putting that engine back to its factory pristine glory.
This is what happens when you put something out there that isn't complete, trying to get opinions. Its still worth it. You guys for the most part have really helped me with this. The tolerances will all be checked by the machine shop. If there is anything even close to out of tolerance, it gets replaced. You know how long winded I am, yet you keep on tasking me! HE TASKS ME!
