Re: Stock pistons posted by LitlElvis on August 16, 2016 at 11:56 AM
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Actually, I found the location of "piston grades" on page 53 of online manual. Guess I overlooked that in my FSM. Thanks for the info about the oil filter tree mount boss change over. Are the check valves you mentioned the same as the check valves that are located in the block/head interface to regulate oil pressure to heads? There's 1 on each bank. Don't know the exact nomenclature, but there's a post on TT.net about how to remove/replace them. Z1 carries them, not sure if NA check valves you mentioned are available anywhere. Any help would be appreciated. Thanks again.