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Message: <blockquote data-quote="96blak54" data-source="post: 1454806" data-attributes="member: 14727">How low was the compression?If any of the rings are shot, moisture in the crankcase will be present. Check the bottom of the oil fill cap. It will show signs of moisture being present. Itll look like milky water dripping off the bottom.Since they are pi heads, id be betting the compression loss on either valve seat sealing or lash adjusters.With the modular engine....its almost never ring sealing issues. Unless some sort of power adder was used in its past life. Im not saying ring issues arent possible with a bone stock engine, but most times its normally something else.Youve been in it before changing the seals, did you remove any of the lash adjusters?</blockquote>