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  1. M

    Duoprop burn?

    I just had my props rebuilt on my 5.7GS VP Duoprop. (22'SeaSport) WOT is about 4800 RPM and 48 mph for the boat.<br /><br />I noticed some cavitation type burns on the rear prop, on the blades near the hub.<br /><br />I've heard this is common. What's the fix?<br /><br />Thanks,<br /><br />ML
  2. M

    Compression Results 45 HP Merc

    I've got a mid 80's Mercury that says 45 HP, but is called the "Classic Fifty". It has 4 cylinders. It runs great. I just want to see if anyone can let me know if these compression numbers sound ok.<br /><br />1. 130<br />2. 125<br />3. 120<br />4. 130<br /><br />Thanks
  3. M

    Cavitation prop damage?

    I just bought a 1998 Sea Sport with the 5.7GS Volvo Penta motor. <br /><br />I noticed the skeg is slightly bent to one side as if someone forgot to put it up when pulling the boat out. <br /><br />I also noticed the prop had a bunch of bubble looking patches on it. I thought it was were...
  4. M

    Compression difference on different side?

    I just did a compression test on my 1998 Volvo 5.7GS with 120 original hours. The numbers on the starboard side were all about 194. The numbers on the port side were all about 190. <br /><br />Why the consistant difference on opposing heads?<br /><br />My friend speculated that one head was...
  5. M

    1998 Volvo Penta 5.7 GS Compression?

    I just bought a boat with a 1998 Volvo Penta 5.7GS with 120 hours on it. Someone told me I should expect to see compression numbers between 150 and 170 does that sound right?<br /><br />Thanks,<br /><br />ML
  6. M

    1990 Johnson 70 hp compression?

    My friend has a 1990 Johnson 70 HP motor with three cylinders. They tested out at 115, 115, 116. <br /><br />I know they are close and that's good. I just want to make sure they are high enough.<br /><br />Anybody know if that sounds right?<br /><br />Thanks,<br /><br />ML
  7. M

    110 PSI on 1986 Suzuki 4 hp good?

    Is 110 a good psi for a 1986 Suzuki 4 HP two stroke?
  8. M

    Removing Lower unit Suzuki 4 hp?

    Is there some release or trick to remove the lower unit on a 1986 Suzuki 4 Hp. It came aout 3" off, but won't come all the way off. This is on a motor that seems to be siezed up. I wonder if the shaft is stuck up in the motor?<br /><br />Any tips appreciated.<br /><br />My Limit
  9. M

    Suzuki 4 HP siezed up??

    I tried starting a 1986 Suzuki 4hp and I could not pull the cord. I then tried turning the flywheel manuelly and it turns about 1 or 2 inches and then locks up. <br /><br />Is this motor shot? What can I do?<br /><br />Thanks,<br /><br />My Limit
  10. M

    Starter only clicks on 1983 Johnson 70 HP

    I just bought a 1983 70 HP Johnson. I was able to start it manually with a rope, but could not start it with the starter. <br /><br />I tested the wires and I am getting power to the celenoid but I don't know if any is getting to the starter. It makes a click when I turn the key.<br /><br />I...
  11. M

    What compression is good for 1983 Johnson 70 Hp?

    I'm thinking about buying a boat with a 1983 Johnson 70 HP. I have a compression test kit and want to test this motor. I know that I want the numbers to be within 10-15 PSI of each other or the lowest to be 90% of the highest. <br /><br />What I don't know is what is the acceptable range for...
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