Tell us more about the hydro locked. If it was hydro locked when you got it and now is not what did you do to unlock it. also without looking in each cylinder how did you determine the pistons are not hitting the valves. Just draining the oil pan may not have drained out the cylinders. The reason I asked for more about the hydrolock. While I had the pan off I would have checked the crank and bearings for wear and scratches in case one was rough or bearing worn out. Have you checked to see if all the valves are free moving so they don't stick. I know you said not hitting piston no info on how you checked just we can't see these things in our cystal ball and we are not there.
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Today's Featured Article - Piston Ring Removal and Replacement - by Chris Pratt. Piston Ring Removal and Replacement - Replacing rings is a fairly easy process to stretch the engines usability between major rebuilds and cut down on that blue smoke and high oil consumption. Frequently, replacing only the rings is not advisable because by the time you do the teardown and measurement of the components, the pistons are often beyond the manufacturers specification or something else you find will signify the need for a major rebu
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