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  1. J

    3.0L omc cyl head Question

    I have a 3.0L OMC 1989 140 hp 181CID. I have had to replace the cylinder head due to a hole in the #4 cyl which allowed water to get in the head. . I could not find a new head with the same casting # as the old one. I bought a used head and took it to a machine shop had it checked and installed...
  2. J

    3.0L OMC Cracked head?

    I will try to make a long story short. My engine was overheating at high RPM. Riser exhaust elbow was plugged up- replaced elbow engine worked fine. Then #4 cyl quit firing and water in cylinder- replaced intake exhaust manifold Old maniflod old and probably needed replaced. Now, still have...
  3. J

    omc overheating high rpm

    I have a 3.0L omc with a cobra stern drive pushing a 21 foot Bayliner. I have been having problems with overheating. It does not overheat if I run it under 3000 rpm. After running above 3000 for a few minutes it overheats. Max rpm should be 4200-4600 which it reaches but will overheat. Can...
  4. J

    omc 3.0 oil and temp alarm install

    I have 1989 Bayliner with 3.0L omc and cobra stern drive. It does not have any alarms for the temp and oil pressure. Does any one know if there is a kit to install the alarms. Do the alarms hook up to the existing oil press and water temp sending units? If not where do you screw in the new...
  5. J

    No Compression

    I have a 21 foot 1989 Bayliner Trophy. Powered by a 3.0 L GM engine and a OMC Corba outdrive. There is no compression in the number 4 cylinder. The engine runs but a little rough. When I bought the boat the previous owner had just completed a valve job. It ran good. The plugs all four of them...
  6. J

    Insurance

    I have AAA $262.00 per year- $8,000 boat and trailer 500,000 liability required for my slip and 100,000- medical- Don't know if that is good or bad. My first boat and first insurance.
  7. J

    Zink (Anode) fresh water-salt water

    I have a 1989, 21 ft Bayliner with a 3.0 L OMC engine and Cobra Outdrive. The boat has been trailerd until now. I am going to keep it in a slip in saltwater in Southern California. I am putting botton pain on the boat and also painting the outdrive. I wanted to check the zinks to see if they had...
  8. J

    Bilge Pump Wiring

    I have searched this sit and found about 400 plus responses for bilge pump problems. However, I couldn't find one regarding my question. I hav a 21 foot 1989 Bayliner Trophy with a 3.0L engine and OMC Outdrive. The wiriing in the boat is a mess from previous owners attempts to rewire sever...
  9. J

    Perko Battery Sw. install

    I have a 1989 Bayliner Trophy with a 3.0 liter engine and a cobra outdrive. The boat has two batteries. The perko switch has settings as follows- 1,2 all and off. Can you tell me what is supposed to happen when it is switched to each of the settings? Also, I need help in wiring up the switch. I...
  10. J

    Flushing Engine and Out drive

    I have a 1989 Bayliner Trophy with a OMC 3.0 L engine and Cobra stern drive- I have been keeping it on a trailer and flushing it when I take it out of the water. Boat is run in the Ocean. Recently I have obtained a slip for the boat and am going to put it in the water and leave it in for a...
  11. J

    OMC Cobra Impeller Replacement

    I am a new boat owner and a first time post to this forum. I have a 1988 Bayliner Trophy 21ft. It has a 3.0L OMC engine and a Cobra stern drive.<br />Just bought the boat and thought I would replace the impeller as a precaution. Replaced the impeller as directed in the manual. Now it does not...
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