Recent content by dolphin1

  1. dolphin1

    Dry joint exhaust

    Can I convert my 98 5.7 mercruiser to dry-joint ? It also has closed cooling.What's involved in doing it?
  2. dolphin1

    Timing curve for the 5.7L ecm conversion 807264A01

    Does anyone know the degees of advance for this module (807264A01)it's for the 5.7L alpha.I'm getting 36 degrees tat with 8 degrees initial.It's all out at 3500rpms.
  3. dolphin1

    vibration around 2600to 2800 on acceleration and deceleration

    Hey guys this one has me stumped 98 350 4barrel serial is OK 482365I added the 4BRL 4yrs ago. The boat ran fine then a weak later I notice a vibration comming up on plane andoff plane it starts around 2600 and after 3000 rpms runs great WOT 4900. 15x 17 prop new OW series drive and transome...
  4. dolphin1

    rear motor mounts

    why did mercruiser change their rear motor mounts,what's the difference ? between the old style and the new style
  5. dolphin1

    97 5.7L head casting#

    I have a 1997 2655 with a mercruiser 5.7L 2bbl OK199098 The previous owner had it rebuilt and replaced a head.I'm putting a 4bbl on it and noticed the head ports were different. The casting #'s are 14102193 and the other is 14028217 which is the correct one? I also noticed it has a hyd roller...
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