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  1. Scott06

    Mercruiser 6.2l 300 (2018 model) Gimbal bearing grease how to?

    they went to permalube gimbal bearings in like 2008 so no grease fitting is there anymore All OEM replacement gimbal bearings are now lubed for life as they say... Coupler should have a zerk or two on it to grease the splines. Get a factory manual for the drive and engine will have all the...
  2. Scott06

    Transmission Woes in Vintage Mercruiser

    Do you have a factory manual for that drive ? Unfortunately most of us don't have hands on experience with that drive due to age and limited amount built vs later drives like MC-1 and alphas. So would recommend finding the factory manual and adjusting cables to spec. Merc only made this drive...
  3. Scott06

    Spark plug gap difference

    correct some of the higher end plugs like iridium are pre-gapped and you cant change them. Don't waste your money on iridium for a 3.0 standard ac delcos will be fine and you can replace them five times for the same cost ... what plug are u using or did you just not gap them and it was .031"...
  4. Scott06

    slipping coupler?

    per this parts list you need 18643A5. The others are for bravo, or jackshaft, or steel workboat models
  5. Scott06

    Spark plug gap difference

    No but you can gap them to .035 unless you are doing iridium plugs
  6. Scott06

    slipping coupler?

    The 357 Alpha comes as a complete bobtail including coupler so would have been replaced with the repower. As others have stated look inside the engine compartment for rubber bits indicating slip in coupler, pull drive and inspect splines and check alignment. Coupler failure if greased and...
  7. Scott06

    1997 3.0XL carb rebuild kit

    What is the carb number off the side of the carb float bowl take that and call Mikes carb parts
  8. Scott06

    thunderbolt IV module question

    Thats what i was talking about, that is the only module.
  9. Scott06

    Mercruiser 3.0l TKS stalling

    It’s gas coming off the booster that’s how they work OP doesn’t know that when rpm comes up main boosters kick in
  10. Scott06

    Mercruiser 3.0l TKS stalling

    He mentioned gas coming off venturis at 2500 which is exactly what should happen when Venturi takes over from idle and transition system
  11. Scott06

    Mercruiser 5.7 won’t make power

    If cam lifters look good use them no break in on roller lifters Flat tappet cam u need zinc zddp added or high zinc oil like driven or Lucas hot rod oil made for flat tappet cam
  12. Scott06

    new 5.7 1987-1996?

    I belive everything but intake would fit Incl carb and delco est exhaust coupler flywheel etc You might run into pulley alignment issues but nothing that would stop me from doing it.
  13. Scott06

    Mercruiser 3.0l TKS stalling

    If you disconnect throttle cable you can hand work the throttle at the engine. when you say dripping into carb do you mean off the venturi boosters or overflowing the bowl? If bowl level is too high and overflowing either float/needle and seat is non functional or fuel pressure is too high
  14. Scott06

    94 Cobia 5.7 Chevy/Yamaha setup

    I suspect you’ll find the 4.3 will be fine for that size boat if propped correctly. Yes with vortec heads intake and 4 bbl you can get a nice bump. As far as towers go that one is not that expensive but yes has a lot of speakers on it . as with any boat that age even of us looks like it’s been...
  15. Scott06

    2005 Bayliner Capri 175 wont stay running

    Is the choke closing when you go to start
  16. Scott06

    Mercruiser 5.7 won’t make power

    The profile of a roller cam lobe is at a steeper angle so the valve opens and closes faster - of two cams (on roller one flat tappet) at same lift and duration The roller would have more time where the valve open at a higher lift (even though the max valve lift is the same ) than the flat...
  17. Scott06

    Making sure I purchased the correct coil for a 1996 5.7L

    My purple and white wire ends near the shift plate by starboard exhaust elbow. There is a plug in the end of it I just use a jumper Wire with alligator clips one end in the wire the other end on a good engine ground
  18. Scott06

    new 5.7 1987-1996?

    Michigan motorz was good for me six years ago when I repowered. I bought a partial engine package which was a new base engine plus intake carb and ignition. Yes the new base engines are new same engine merc and Volvo would use to build it’s complete engines. It was more money for new but now...
  19. Scott06

    Should i part out my Yamaha l4 3.0?

    Depends on what condition rest of boat is in ? If it is roaches would say part it out. Can post it either way list engine but includes boat for free … Would be important to list engine long block is same as merc and Volvo 3.0 probably best angle Is if someone needs a 3.0 engine Trailer if u...
  20. Scott06

    94 Cobia 5.7 Chevy/Yamaha setup

    Sucks while itS summer but you may be way better off waiting til fall or next spring We were thinking about a newer jet ski and while we could sell our current one for what I paid for it years ago it’s just a bad time to buy if you are value conscious.
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