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Message: [QUOTE="golfer, post: 577735, member: 266"] Tadd, if y'all do start doing fills definitely give me a shout...we found some kind of epoxy chit to coat the dried HardBlok with which prevents chit in the system...clogged coolers, etc. and a spin on coolant filter is recommended...jussst in case but with good coolant passage prep, and proper curing (torque plate installed & main caps torques during dry time) ...annnnd the sealant...it's the way to go. on the 7.3L blocks, we deburr/soften/feather the stress riser so the forces aren't focused on that one 'line'...but we still see quite a lot of inconsistency in the quality of the castings from block to block..some have lots of porosity, some have very little... I imagine that we'll see something similar (inconsistent quality at the casting line) as we build more and more 6.4L's. [/QUOTE]

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