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  1. Cpell1984

    1998 5.7 gsipbycce valve adjustment help

    Pretty sure have non hydraulic lifters. Looking for Valve lash clearance specs. Trying to set the push rods just had the head redone, new head gasket, new risers and manifolds. Timing currently set to 8degrees before top dead center. Wanna make sure I set the head right.
  2. Cpell1984

    Proper spark plugs for a 1998 5.7gsi

    Serial number 4110168082 model 5.7GSIPBYCCE recently bought someone else’s headache. Boat rubs and idles great underload motor sounds clanky but revs up to over 4500 and will plane out now. Around 3000-3500 while cruising it will start back firing. Boat is very smoky when idling at dock. Black...
  3. Cpell1984

    Where is serial number on motor?

    Recently bought a 1998 Chaparral 260 signature with a 5.7 GSI throttle body injected. Wanna buy some parts for the engine but not sure what model gsi I have. My mercs always had the serial number on the plastic cowl cover. Looking to pick up new thermostat and gaskets as well as temp sensor...
  4. Cpell1984

    1998 5.7 gsi power loss occasionally

    Hello folks, I recently picked up my first boat to be powered with a 5.7 gsi TBI engine. I’ve only had it for about a month and a half. When I went to see the boat and test ride it ran great. Came right up on plane no issues. We cruised around for 20-30mins at 3500-4000rpm. I brought the boat...
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