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  1. tango13

    Outdrive gear oil

    Hey everyone, I was just going through all my extra oil bottles in the garage and took a careful look at the bottle for the gear lube I put into my boat this fall. I bought this boat at the end of the summer and used it a couple times. It has a chevy 350/ MC-1 "250hp" outdrive that is in great...
  2. tango13

    Spark Plug & Wire Options

    Hello all, Planning to get parts for a spring tune up for a newly acquired boat w/ 77' 350 merc (250hp). I dont have much history on the engine other then it has a new set of points/rotor/cap and new fuel pump... Spark plug wires look to be the original mercruiser factory wires.. Plugs possibly...
  3. tango13

    Draining exhaust risers and (mostly) stripped manifold drain hole

    Hi guys, recently winterized my 78' mercruiser 250 (350ci), and I noticed brass plugs on the exhaust risers... I opened them up an water drained out. From what I understood, all the plugs required to drain where the 2 block drains, 2 exhaust manifold drains, and power steering cooler.. This is...
  4. tango13

    1979 Mercruiser 250 I/O info

    Hi everyone, just bought a 1979 ABC American ski boat with a Merc. 250 I/O. Guy who sold it says its a 350cu Chev.. no spec stickers on the valve covers so I'm not entirley sure about the motor.. I hope its a 350. Leg is a 250 model. Iv looked around on the internet for info but couldnt find...
  5. tango13

    1975 mercruiser 233 drive, 351 ford, any good?

    Hi there im new to this site. Im looking at buying an older ski boat soon, a 1975 apollo starfire.. similiar to an american, jolly roger, etc.. Boat has a mercruiser 351 with a 233 drive. Dumb question but is that "233" the hp rating?? I know my dad used to have a merc 305/228 drive and that...
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