Worked a treat on 4 of the 5 cups of bolts/nuts. The water pump bolts are in pretty rough shape. I may just source some new ones. But I have put them back in vinegar for another 24 hours. See how they turn out tomorrow.
The upper timing cover was gnarly. Uber gnarly. In fact, the only place on the motor that was nasty with oil or any other liquid weeping out of the engine was from the bottom of this cover. As evidenced by this picture:

But with a little bit of Zep Commercial Grade Oven Cleaner (which advises not using on Aluminum), I was able to turn it into this:

It is still drying in the picture. I just sprayed it with the stuff and let it sit for 3 minutes, rinsed off, scrubbed a bit then reapplied. Three times got it to this point.
I think that Zep Commercial Grade Oven Cleaner will work wonders on the block.
The upper timing cover was gnarly. Uber gnarly. In fact, the only place on the motor that was nasty with oil or any other liquid weeping out of the engine was from the bottom of this cover. As evidenced by this picture:

But with a little bit of Zep Commercial Grade Oven Cleaner (which advises not using on Aluminum), I was able to turn it into this:

It is still drying in the picture. I just sprayed it with the stuff and let it sit for 3 minutes, rinsed off, scrubbed a bit then reapplied. Three times got it to this point.
I think that Zep Commercial Grade Oven Cleaner will work wonders on the block.
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