Clean, clean, clean.....

Today was supposed to be about cleaning.... but I also managed to get past a recent roadblock that has been keeping me awake at night!

Today's first step was to remove the oil gallery plug from each side of the engine block.  I've read that on 50% of engine cores these never come out, but both of mine came out easy with a 1/4 inch extension on a ratchet:

Next, I filled a tub with hot water and Simple Green (just like the head studs a few days ago).  This is the case half that didn't have any studs remaining.  I wasn't sure I'd be able to fit the second case half in, but at least I can get started on this one:

While this was soaking, I decided to have another go at those two stubborn head studs.  So far no amount of PB Blaster or gentle persuasion has convinced them to move even the slightest.  A couple of days ago (see my last blog entry) I added a little of "home brew" mix to the studs.

I had the time today to give another try at removing them.  I didn't expect 48 hours would be enough time for it to soak in the ATF and acetone "home brew" mix but WOW!  They came out very easy with very little wrenching!  The "home brew" worked AMAZING!

50/50 ATF and acetone - my new favourite penetrating oil. The studs came out clean too - great news

Now I've got the best chance to install all the head studs even and properly and stop worrying about two that were only partially into the block. Very cool!

​By this point, I was ready to get started on cleaning the case halves.  Just to prove that I'm actually doing something, Brenda took some photos of me scrubbing away some grime:

Both halves somewhat complete, a quick pressure wash to rinse off the dirty water and drying in the sun:

They look great, but as they dry I notice some spots that will require some more cleaning attention.  Lots of spots that are hard to get at with a scrub sponge, I'll have another go with a toothbrush and maybe the Dremel tool and a 3M wheel.  I also see a bunch of casting flash from the factory that needs to be removed to improve oil flow.  It's surprising how little GM did in this regard.

I have some rusty spots that will also require some attention.  I'll do some research on the best way to address this.

​Good progress today, especially the last two head studs.  Moving on!