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  1. Scott06

    1984 28' pontoon I/O repower?

    3.0 with alpha one gen two ‘91 or newer. You will have to close up the transom hole. this is basically the same block as a 2.5.
  2. Scott06

    Mercruiser 5.7 won’t make power

    Thought lift above .420 was too much for stock vortec head as well.
  3. Scott06

    Mercruiser 3.0l TKS stalling

    Agreed idle or transition circuit is plugged
  4. Scott06

    Lots of oil coming from the breather

    A coating yes is normal I get the top of my carb cover with oil, Just wipe it off. Both my old 3.0 and new 5.0 do this.
  5. Scott06

    1997 3.0XL carb rebuild kit

    Always had good tech support from Mike's. Post a picture of the carb we can probably ID it. Does it have one or two idle mixture screws ? If it is the factory carb it will be a mercarb.
  6. Scott06

    Trim cylinders bleeding down fast

    You can leave the atf in there as it will work fine I think I got hydraulic oil with a ISO 32 rating at the local auto parts store that worked fine
  7. Scott06

    Mercruiser 3.0l TKS stalling

    no video or link was attached
  8. Scott06

    Transmission Woes in Vintage Mercruiser

    Some one cobbled this already. Originally grandpas boat came with a white tilt pump and reservoir (combined not separate) that took ATF. Had a very small reservoir that was a PITA to fill. A machinist buddy of his rigged up a pipe attached to it to enlarge the reservoir. Didn't fix the issues...
  9. Scott06

    Spark plug gap difference

    the first paragraph states... "In most cases your Iridium Power plugs do not need to be gapped"
  10. 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...
  11. 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...
  12. 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"...
  13. Scott06

    slipping coupler?

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

    Spark plug gap difference

    No but you can gap them to .035 unless you are doing iridium plugs
  15. 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...
  16. 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
  17. Scott06

    thunderbolt IV module question

    Thats what i was talking about, that is the only module.
  18. 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
  19. 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
  20. 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
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