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  1. bugdewde

    Tilt Trim questions

    1979 Mercruiser 470 (3.7L) Won't tilt or trim up. works fine going down. If I apply power to the terminal out back, it will raise. So the pump system seems fine (yes, running down would tell me that).... but I wanted to check anyway. Seems the solenoid (or whatever) at the pump has a relay...
  2. bugdewde

    Nineteen Speed Test

    -1979 Aristo Craft Nineteen -Mercruiser 470 4-cylinder 170 HP. -1.84 ratio outdrive. -23 pitch prop -Loadout: 1/4 tank fuel, one battery, some inflatables, one 200 lb man and one 40 lb dog. Almost a direct ratio on rpm vs speed. 2000 rpm is 17 mph, 2500 rpm is 23 mph, 3000 rpm is 31 mph, 3500...
  3. bugdewde

    25" pitch prop but what diameter? 1979 Aristo Craft Mercruiser 470

    I have some literature stating that the 1976 (no info on 1979) Aristo Craft Nineteen with a 470 series Mercruiser (170 hp inline 4) and the MC-1 (Pre-Alpha) drive had a 25" pitch prop, but it doesn't mention the diameter. It even gives a part number (for '76) as 48-65480A4. My question is...
  4. bugdewde

    1979 Nineteen Ignition Switch Positions???

    What are they? Mine appears to be like the old cars. Off at 12-o-clock, run, then start..... but there's one at the 11-o-clock position like an accessory switch. Is this correct? FYI, nav light, bow light, bilge, and blower all work in all positions?????? Fuel gauge doesn't work but the...
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