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#1
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Anyone ever done their own polishing or epoxying of their block or lifter valley. I have an old 318 block I want to practice on so I don't mess my project up, but some help or advice would be nice. Like, how do you apply the epoxy, and what kind? Thanks. Joseph Tonna
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#2
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The easiest way is to use a high speed rotary grinder, a good selection of rotary files w/2" & 6" shanks and a box of rotary sanding drums along with a 2" and 6" shank mandrel. Duct tape all machined surfaces get started. A block takes about 6-7 hours of hard, messy work. You want to make sure to get all slag, casting imperfections,and anything else that looks like it could break off and get in the oil. You can polish the inside of the block until you can see your face. If you polish it that well then nothing else is required.
I have usually ground and polished to a moderate degree and then painted the inside with Rustoleum Rusty Metal Primer. The block must be clean, free of grease, etc. The paint has stayed on well over several years of use. I believe the paint seals in casting sand and other impurities. The only time I use epoxy is to fill oil drainback holes and divert oil from the valley to the front of the engine (wetsump) or to the oil pickup (dry sump) to return to the tank. It's really not hard to do, just takes some time and messy. |
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