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  1. Darkhorse1201

    Why is there water in ehaust manifolds?

    This may be a stupid question, but why does water go into exhaust manifolds on I/Os? I know that the engine draws its cooling supply from the body of water the boat suts upon, but why does it need to be vent out through the exhaust manifolds or more specifically why does it need to be vented...
  2. Darkhorse1201

    Runaway boat on land!

    Here's my contribution to SHT. Last fall I was going to switch the postions of my 2 boats in the driveway so I could put 1 nearer to my garage for easier access to my tools. First boat moved - no problem. Go to move 2nd boat - mind you that my driveway has a downhill slant away from the street...
  3. Darkhorse1201

    Draining fuel out of OMC i/o

    I have a 1992 Sumbird 185 (I know somebody will give me **** for having a Sunbird) with a 4.3L OMC I/O in really great shape that I got for next to nothing. It hasn't been run in quite a few years (which is why I got it cheap). I need to get the fuel out of the tank as I am sure that it has gone...
  4. Darkhorse1201

    Correct fluid for OMC tilt/ trim pump?

    What would be the correct or a good substitue fluid fo my 1992 OMC 4.3 sterndrive tilt/ trim pump. The manual says to use only OMC fluid but no more OMC!
  5. Darkhorse1201

    Anyone know the final ratio of OMC 5.0 outdrive?

    I am looking for the final ratio of a OMC 5.0 outdrive(Chevy not Ford) or the formula on how to figure it out. I have heard many different figures but would like to know the correct one! Thanks
  6. Darkhorse1201

    Difference betwen FWC and RWC?

    Stupid question and not sure where to post but what is the difference between a fresh water colled engine and a raw water cooled engine? I though there were only 2 kinds - open and closed systems (closed using antifreeze like a car). I thoght a knew a bunch about boats but this one has me...
  7. Darkhorse1201

    Right prop for mismatched engine combo?

    I have a 1992 Sunbird 18' with a 4.3 V6 OMC and a 5.0 outdrive (I verified this with the numbers). I just bought the boat and it did not come with a prop. What size and pitch should I be looking for? I beleive the 4.3 came with 14.25" x 19. Should I pitch up, down or stay the same due to the...
  8. Darkhorse1201

    Right prop for 4.3L with 5.0 Cobra outdrive?

    I have a 1992 4.3L V6 that has a 5.0L outdrive on it. (I know this cuz I checked the numbers). Since the ratio is different on the 5.0L outdrive than the 4.3L outdrive, should I go up in pitch or down in pitch? The stock prop for a 4.3L was I beleive a 14.25" x 19 or a 21. Any suggestions from...
  9. Darkhorse1201

    Need wiring diagram for 1992 4.3L V6 OMC

    I just bought a 1992 Sunbird with a 4.3L V6 OMC sterndrive in it. However the plug on the motor side of the harness (female) is missing and I need to re-wire it. Anyone know where I can get a diagram (or maybe a new plug) for this? Thanks
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