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  1. Scott06

    1997 GP760 Wave Runner scored pistons and cylinders

    Agreed running lean and detonating will hammer the rings and pistons to death and ruing the motor Would be looking for fuel system contamination, proper fuel pressure, and dirty carbs
  2. Scott06

    MerCruiser 3.0 Runs Poorly As It Warms Up

    Have you pulled the siphon tube from the gas tank to see if there is a screen in it? was thinking either this , the antiphon valve may be restricting fuel flow. Cant recall if you checked spark strength after it messes up or tried running it on a sperate 5 gal tank . In the end might need a...
  3. Scott06

    6.2 MPI Whine noise when revs

    Yeah we have been through what work was done and how this can happen over the winter. I suspect you will find either water got in bellows or water got in the gear lube and corroded a bearing in the drive.
  4. Scott06

    Replacement Prop Selection

    Agreed something is not right. Would also verify firing order is correct. I thought on the SBC there are two cylinders that can get swapped wires and still run ok ish. Has tach been verified for accuracy ?
  5. Scott06

    Please help with engine type selection!

    My 65 Pontiac had a factory windage tray also not a real high Revving engine 5200 was about it before the rods left the building …
  6. Scott06

    Please help with engine type selection!

    Yeah no way a 5.0 would do that. Answer depends on what u want out of the boat and how much you want to spend. as mentioned you would be better off getting a 96 and up vortec engine . If it were me I would get a new long block and exhaust and intake manifolds . Drop in would be the same vintage...
  7. Scott06

    '88 5.7 inboard dies after running smooth, restarts after few minutes, smooth again

    Yeah Sierra is a better respected aftermarket supplier, but you never hear I bought the OEM part and it failed or was SOL in the box.. Also there are so many counterfeit parts suppliers online now. There is a toyota mechanic on you tube called Car Care Nut, he did a whole video on how to spot...
  8. Scott06

    Assembling a 4.3 MerCruiser v6 - Parts check needed

    Hope the check out ok. Its rare that folks actually represent them in actual condition!
  9. Scott06

    Please help with engine type selection!

    What size boat is it , I think you’d be better off not loosing displacement and power
  10. Scott06

    4.3 how to remove thermostat/sleeve from housing

    Had to typically pry them out with screw driver, so do t come out without breaking them. If you go through the work to get in there dont just test it just replace no sense screwing around
  11. Scott06

    Which engine oil can I add?

    Not a problem to mix them in a non catalyst engine, as stated the blend is a blend of synthetic and conventional oil , so mixing blend and full synthetic will be a blend when combined . Use them all interchangeably
  12. Scott06

    Alpha I Gen II Impeller Replacement

    Yes upper gear case seal you should definitely inspect or do a pressure test when you reassemble. Can get damaged reassembling so be careful. o change that upper seal gear and vertical drive shaft come out, seal is like first thing that goes back in .
  13. Scott06

    Alpha I Gen II Impeller Replacement

    if you get the quicksilver merc impeller kit with the base plate and gaskets + orrings its in there its #25 in this dwg- the kit comes with a tool to install it- its just a cup you use as a gauge to slide the slinger seal down the driveshaft while lifting up on drive shaft. I think it just...
  14. Scott06

    Swap drives from one boat to another. How many day project?

    So are you swapping this engine into original boat ?
  15. Scott06

    Alpha I Gen II Impeller Replacement

    yes likely happened prior to this change out. In salt the rubber I believe doesn't last quite as long but in fresh I changed my neighbors original to the boat 11-12 yr old impeller, looked new. Did mine after 6 years also looked new. OEM bellows lasted 18 years. Sounds like you are on right...
  16. Scott06

    Alpha I Gen II Impeller Replacement

    That melting is due to lack of water flow from impeller at some point. There is some water flow into exhaust at all times to cool it. This is indicative of problems with water flow or impeller lost a vane I have never put anything on the screws although using perfect seal/ permatex #3 can help...
  17. Scott06

    Replacing an Alpha1 Gen1 205 V6 for 87 Cobalt 17BR

    When you say there is a gash in there do you mean tear in the bellows? If so need to replace them, they are clean enough. last pic yes that is where the annode goes
  18. Scott06

    6.2 MPI Whine noise when revs

    One thing to try have you done the same revving but at different drive angles via both trim and steering. Willing to bet it changes pitch which would be an indication of gimbal and or u joint issues despite the previous work
  19. Scott06

    New to Volvo family

    Volvo outdrives for us market are made in TN and the engine is a chevy so not as imported as you think.
  20. Scott06

    New to Volvo family

    No elegant but zip tie will be fine for years to come , it just sits there. I had a rubber band on my Datsun Z years ago, metal spring clip broke off.
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