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  1. R

    5.7 Cast Iron Intake Manifold - Salt (‘raw’) Water Cooled

    damaged engine rusted !!!!!!!!!!!! engine damaged ! new engine .
  2. R

    Puffing steam out vents

    ROY WILLIAMS ENGINE 1978 , 470 Mercrusier ANTIFREEZE 60% DISTILLED WATER 40% .. RADIATOR . MARCH 2025 !!! ENGINE VERY NOTICE ! FRESHWATER DAMAGED ENGINE ..........NO RADIATOR .
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    Puffing steam out vents

    engine antifreeze 60% distilled water 40% coolant ... engine antifreeze coolant and the water ocean ?
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    Leak into bilge, bellows?

    https://www.ebay.com/itm/394315884950?_skw=mercruiser+alignment+tool&itmmeta=01JNRJHWM2WRND9JQP9R8TAC76&hash=item5bcf0ee996:g:45oAAOSwpcBjYhyU&itmprp=enc%3AAQAKAAABAFkggFvd1GGDu0w3yXCmi1fgN9HSRom1XLIwcMvpBelLXGPLFT%2FEBRwumHOlX90OoE1FCoi77%2BJijXFxGI2m1DTnFD4pR7d9d5VrAv4q31QQWK3NTmzVVWPib0tT9i5G%...
  5. R

    What happened now?

    THE TIMING IGNITION 2 DEG ATDC 600-700 RPM. THE GASOLINE OF THE WATER OF THE FILTER.
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    mercruiser 4.3 overhauling

    4.3l engine of the oils/water and the water gasoline! the ignition timing ATDC 2 DEG 600-700 RPM .
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    Timing is retarded ;-)

    2 DEG ATDC TIMING DISTRIBUTION 600 RPM - 700 RPM ENGINE. GASOLINE 87 OCTANE. https://www.jblllc.com/wp-content/uploads/2015/03/GM-3-L-Service-Manual.pdf
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    1978 Mercruiser 228 Sterndrive help

    ROY WILLIAMS The 1978 WELLCRAFT 20 FT / ENGINE 470 MCM. 4 CYL. MERCRUISER 170HP. 41 YEARS AGO, 1984-2025 ...MANUAL MERCRUISER 2 BOOKS.
  9. R

    Ballast Resistor or not?

    The key starter engine on , coil 12 volts of the ignition coil + ... The ignition coil run engine , of the resistance 1.8 wire, key on engine on 9 volts ignition on .
  10. R

    Resistor wire

    the key on engine starter ignition coil +12volts .....the engine on key switch on , 9 volts of the wire 1.8 ohms resister of the choke - resister ignition coil positive +.... 9 volt...
  11. R

    Resistor wire

    the engine starter key 12 volts coil ..... then the key 9 volts engine runs ... purple wire resistor 1.8 resistor coil + engine on !
  12. R

    Mercruiser 888

    MCM 888 engine max 3800-4200 rpm ....
  13. R

    Mercruiser 888

    MCM 888 ENGINE 188 HOUSEPOWER .
  14. R

    Mercruiser 888

    THE ZINC PLUS ZDDP 6 OZ ....MCM470 1978 ! NO ENGINE HEARING ...NO TAPPETS ...
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    Mercruiser 888

    Mercruiser 1977 service manual !!!!!!!!! MERCURY ! BOOKS 1/2 ...... MCM 888 1970'S ENGINE OIL 30w-40w ....ZINC PLUS ENGINE OIL 6 OZ..... MCM 470 ENGINE 1978 ROY WILLIAMS ! 40 YRS AGO 2024 TODAYS !
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    Mercruiser 888

    PROPELLER , 20-25 FEET BOAT DIA 15-3/4 IN PITCH 17 INCHES 3 BLADES GASOLINE 93 OCTANE AND THE ENGINE OIL 30 - 40 W... 5-10 BTDC TIMING 700 RPM ENGINE RPM MAX 3800-4200 1970'S
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    Pertronix Upgrade Question

    1978 MCM470 Pertronix 1146A 1992 year ago ... 40 years ago ... 2024 year . so the key ignition , engine run ! now the engine key on , no engine ... 30 seconds the key ignition on , no engine ..... damaged it ...... the choke carb Pertronix 1146a red wire , then 1146A black ignition coil -...
  18. R

    3.7 gets hot while idling

    exchanger water ,,, distilled water 50% antifreeze coolant engine 50% ... my MCM470 1978 engine ,,, exchanger distilled water 40 % 60% engine antifreeze ... RV antifreeze, no?
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    Mercruiser 170/470 Starter Question

    my MCM470 engine starter very nice !
  20. R

    engine oil

    BRIAN 31227 THE ENGINE OIL 25-40 WT ... MY ENGINE 470 MCM OIL 30WT AND THE SN PLUS 6 OZ ....1978 -2024 ENGINE VERY GOOD JOB ...
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