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  1. J

    Opinions on the Volvo Ocean series for a repower (OSI-XDP)

    http://www.volvo.com/volvopenta/na/en-us/marineengines/powerforleisureboats/ocean_series/5.0_osi-xdp/ <br /><br />The above link is the engine I am looking at for my repower. The boat will be used 90% in the salt, I will probably stick with their composite props as they will warranty them and...
  2. J

    Opinions needed on the Volvo Ocean series for repower (OSI-XDP)

    Oops Wrong Forum
  3. J

    Opinions on Volvo AQAD30

    I have a 19.6ft Cuddy cabin that I am looking to repower with a diesel, initially looking at the 1.7l mercruiser, however I can get a good deal on a complete AQAD30 pullout with 1200 hours. I will have it thoroughly checked out prior to purchasing or install, but I want to make sure there are no...
  4. J

    OMC 305, new carb and fuel tanks now no fuel

    Well, this weekend myself and two of my friends, one a navy diesel mechanic decide to tear the back of my boat completely apart, perform a tune up, install new larger poly tanks over the old steel ones, and fix the problems with the boat that we have been having.<br /><br />1. We found we were...
  5. J

    Vortec conversion CR and exhaust questions

    I have an old OMC 305 I/O. Two of the rockers studs are too short, and since the engine is a 77 I was going to pull the heads and rebuild them, but a buddy of mine brought up a better alternative. Vortec heads. They are higher flowing, better fuel economy, and their 1.94/1.5 valves keeps the...
  6. J

    mating one piece rear main seal inplace of an old two piece engine OMC coupler

    In response to a concern brought up in my other thread. Will I have an issue mating the new one piece rear main seal engine to the old OMC coupler on an electric shift stringer drive? Any flywheel issues? Anyone know of an adaptor plate that I need or is it as simple as unhook and reinstall. <br...
  7. J

    What do you think about this setup?

    Hello Everyone, <br /><br />I built a balanced and blueprinted 355 for my Camaro. However I am stepping up an LS1 for it, so now I have a $6,000 block that I cant do anything with that I would like to stick in my boat. Here’s the setup. The current engine is a 305 so everything easily transfers...
  8. J

    Outboard size for 21ft boat

    Hello,<br /><br />I am considering the conversion from I/O to outboard. Currently there is a 245hp 305 I/O in there, but it is an old OMC and repowering to a new I/O, for space reasons, is out. I am considering buying 1 new 250hp 4 stroke outboard, or two 150hp. My question is which would be...
  9. J

    Outboard size for 21ft boat

    Hello,<br /><br />I am considering the conversion from I/O to outboard. Currently there is a 245hp 305 I/O in there, but it is an old OMC and repowering to a new I/O, for space reasons, is out. I am considering buying 1 new 250hp 4 stroke outboard, or two 150hp. My question is which would be...
  10. J

    Repower 71 OMC to 4.3/5.7 MPI Merc?

    accidental double
  11. J

    Repower 71 OMC to 4.3/5.7 MPI Merc?

    Hello All,<br /><br />I am tired of the old OMC drive, but love the boat so I am going to bite the bullet and do a complete repower. The original engine is a 215hp 305 chevy V8. I am considering going to the 4.3 MPI which has 220hp. The boat is a 1971 IMP 21ft. I would like to cruise at...
  12. J

    Smart Tabs, 20ft boat, but with 315hp.. Well over 240

    Hello,<br /><br />I have searched and read through a bunch of posts, but didnt find anything with my particular issue. I see the smart tabs say they work up to 240hp, well I definetly go past that. The boat is a 20.2ft IMP with 8.3ft beam. I am trying to get some better economy out of the boat...
  13. J

    1971 OMC Electric shift hydraulic steering VERY stiff

    Hello all,<br /><br />This board has been extraordinarily helpful to me with this boat so far and all I can say is helpful. I found out that I didnt have the compression I needed in two cylinders as well as some vale issues, but anyway this is the next "issue".<br /><br />The steering on my 71...
  14. J

    Installing new engine, need help, quick questions, I promise :)

    Ok here is the situation. I have a 1971 IMP it has an OMC 350 that is in need of a rebuild. I just so happen to have a 355 shortblock that I built for another project. I would like to know what differences there would be. It seems to me if it all hooks up at the flywheel that this engine should...
  15. J

    245hp 20ft IMP can't get on plane... Few questions

    Hello everyone,<br /><br />Great site I have really enjoyed reading everything and have picked up a few ideas on what could be my problem, but I wanted to see what everyone else thinks.<br /><br />The boat is a 1971 IMP 20ft Cuddy Cabin. It has a OMC electric drive outdrive and a Chevy 350, I...
  16. J

    245hp 20ft IMP can't get on plane... Few questions

    Hello everyone,<br /><br />Great site I have really enjoyed reading everything and have picked up a few ideas on what could be my problem, but I wanted to see what everyone else thinks.<br /><br />The boat is a 1971 IMP 20ft Cuddy Cabin. It has a OMC electric drive outdrive and a Chevy 350, I...
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