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  1. Scott06

    Vortec 350 5.7 Mercruiser Build

    True but if you want swaged ends on the hoses and longer hoses it will be a bit more. Marine power makes an excellent one.
  2. Scott06

    Vortec 350 5.7 Mercruiser Build

    Spend the $200 on a remote set up. I regret not doing that while my wallet was open when I repowered. Regret it every year changing the filter upsidedown....
  3. Scott06

    Newbie prop/hub ?

    Maybe I think you are seeing that the bigger diamter (16) Aluminum is needed to push this boat. The vengence is really a stainless version of a black max, I think a cheap way for dealers to get something shinny on there. The eneria should bite better and your engine has a fairly broad WOT...
  4. Scott06

    2001 Waverunner XL800 Issues

    Suspect it ran lean and it detonated based on what you are metioning with runablility issues then carb cleanings . Yes engine will have to come out
  5. Scott06

    Newbie prop/hub ?

    Yes either can be used , if it chatters it only hurts your ears . You can get a rubber hub like mentioned merc also makes a flo torq ssr hub for their heavier props like the enertia etc. try with what you have and upgrade if needed going up 2” in pitch and to a prop with more bite like enertia...
  6. Scott06

    Gimbal bearing grease

    Lucas red and tacky , really bondos recommendation is spot on
  7. Scott06

    Octane requirment for a 1993 4.3LX

    If you burn through it regularly its not an issue -really only a problem when it sits. We have a boat and a jet ski. I always fill the boat with 92 octane non ethanol, because thats all the local marina carries and i don’t feel like lugging cans for 30 gal fill ups. Conversely the ski i fill...
  8. Scott06

    4.3LX acceleration opinions

    As mentioned thats a lot of boat and people for that engine and a 19” prop try a 17” or better yet the 4 blade. If you want a inexpensive one to try out try a michigan votex 4 blade 16”. I used to run one of these when skiing on a 3.0( aka underpowered) boat. At the time i was about 250-260 lbs...
  9. Scott06

    Boat wiring

    As pointed out there is no difference between a factory flared line and a universal fit premade auto brake line, assuming it was installed in a workmanship like manner. Strange they didnt reccomend repairs to correct these deficiencies…unless this is their way of saying we only want to work on...
  10. Scott06

    1990 Mercruiser 350 Magnum Alpha One tune for altitude?

    http://www.tiptopgarage.com/pdf_files/merc_weber_4barrel_97_09.pdf although this is geared to the webber carb it gives you a general idea of high altitude adjustments On pg 6&7 . As chris mentions for intermittent use just go down in pitch . The carb calibrations aka jetting changes are all...
  11. Scott06

    Burned valve or worse 1997 5.7 LX

    Napa will be fine any good quality gasket like fell pro will work. You always can stab the o2 sensor in later if you go that route.
  12. Scott06

    2002 Sun Tracker 22' pontoon boat

    yes assuming motor heigh is not too low drop pitch to a 13"or maybe even an 11. Current situation you will be lugging the motor and not allowing it to make peak power would expect a slight increase in speed but a 22 ft with a 75 is not going to be that fast . Best result will be the fact that...
  13. Scott06

    Engine coupler or dog clutch or something else

    Makes sense as thats whatt he coupler is supposed to do. Depending on your boat you may not need to completely remove the engine, just lift it up and twist it 90 or pull it forward enough to remove the flywheel housing.
  14. Scott06

    Burned valve or worse 1997 5.7 LX

    google is your friend https://www.google.com/search?q=mercruiser+o2+sensor+plate&rlz=1C1GCEU_enUS915US918&oq=mercruiser+o2+sensor+plate+&aqs=chrome..69i57j0i22i30.6743j0j15&sourceid=chrome&ie=UTF-8 Any SBC exhaust gasket will work summit racing has a dozen different manufacturers gaskets in stock
  15. Scott06

    Burned valve or worse 1997 5.7 LX

    Others make the o2 sensor plate as well. I dont think you will get an answer either, just thinking when you get it all back together bring able to see fuel ratio and go from their
  16. Scott06

    Engine coupler or dog clutch or something else

    Was the alignment checked when the drive was replaced?
  17. Scott06

    Possible boat purchase!

    VP SX drive and 4.3 is a very, very reliable and good powertrain for that size boat. It is of the age that rubber componets liek the bellows will fail. Exhaust bellows are no issue as they have water in them anyways. If the driveshaft bellows leak you get water in the boat and ruin the ujoints...
  18. Scott06

    Prop Suggestions Needed

    Again dont worry about the diameter. Typically diameter will go up as pitch goes down in the same prop. Your safest bet would be to stay with the same prop just go down one step in pitch. If you can find a local prop shop that will let you try before you buy that is also a good route
  19. Scott06

    Repeated impeller failures, help

    OP stated Bravo 3 drive in first post. B3 is going to use a belt driven pump unless someone has changed it out. To my knowledge Merc never used a crank driven pump like Volvo, but either design works
  20. Scott06

    Engine coupler or dog clutch or something else

    Pull the drive and inspect coupler for rubber pieces and screwed up or pointy splines. Take top off drive look at upper gears see if they are ok. whit smoke could be overheating if coupler is slipping or drive gears are gone vertical shaft in outdrive wont be spinning and thus water pump...
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