What advantages are there to painting the inside of the block?

harrisonm said

I totally agree with the fact that the inside of the block must be dry and clean. But how do you clean the inside of a block that has been soaking in oil for 50 years?

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I've painted the insides many Mopar motors with Rustoleum damp proof red primer and or Glyptal after having them hot tank after all the machine work was done, I use both Shell Solve 360 cleaning solvent (or its equalivent(SP?) of another brand and then cans of a good brand of spray brake cleaner that doesn't leave a residue to make sure they are really clean:thumbsup:
I do use a propane torch to make sure any engine block part, lifter valley that I'm going to paint and seal is dry before I start. I need to hold the flame on a spot until I see the water boil out and then move on until the entire lifter valley is completely dry:thumbsup:
I started doing that a long, long time ago (30+ yrs ago) with no come backs or failures that I am aware of:):thumbsup:
I do deburr all the blocks I build before starting on them to build so getting them clean is #1 on my to do list before starting the assembling of them, the quicker oil return on any engine using a stock 4 or 5 quart oil pan can't hurt:thumbsup::icon_fU: Engine assembling is a lot like brain surgery, you can NOT keep it to CLEAN:thumbsup: