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  1. Scott06

    Merc Alpha4 no longer available. What to replace it with?

    correct, it has a 5.0 carb that is stock except for a 4 bbl intake and edlebrock 1409 carb
  2. Scott06

    New motor knocking???

    What is the distributor lube point? if you primed with a dril the oil should be coming out all rocker arms. Not sure if any oil gallery plugs being missed during assmbly would do this. I would defintely discuss with whoever supplied the reman before you get too far into it. Agree with others...
  3. Scott06

    New motor knocking???

    Lifter clearance will increase as engine warms up. I would take valve covers off and readjust rockers arm nuts. doesn‘t sound like crank or rod bearings to me . What do the spark plugs look like
  4. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    Check 50 amp circut breaker and 90 a fuse on starter lug all 12 v is feed off the starter lug trace it out from there
  5. Scott06

    Exhaust Elbow Riser ?

    The shift bracket should move up on the riser just fine no need fir a bracket
  6. Scott06

    Exhaust Elbow Riser ?

    Don’t think you are over thinking it given those measurements. My sea ray 200 with a 4.3 had no riser, with a 5.0 used a riser. Id add a riser and some have use exhaust hose to stretch the down elbow in similar cases i wouldn't worry about changing the capacity decal. Factory would use the...
  7. Scott06

    Engine replacement

    Check your manifolds and risers for leaks. They are a common hydrolock cause as well, do not want to transfer them to a new long block. a complete base engine or reman long block is your best bet.
  8. Scott06

    propeller issue at low speed

    Put the three blade back on and see if it goes away. Otherwise if hub is bad and it is a replaceable one replace it, otherwise send prop back for a new one
  9. Scott06

    Outdrive does not want to re -install in boat

    The drive and shifter are in forward and the shift mechanism is aligned full forward (in front of drive just below bellhousing)? If its in drive turn the prop CCW to ensure driveshaft is engaged with the Coupler, its shouldnt turn if it is. You might not be in the coupler yet and truning the...
  10. Scott06

    4.3 L Mercruser

    My neighbor had a cracked block after seeing a freeze plug pushed out. The point I was trying to make was I think in his case it took a couple of usesages of the boat (engine gettting hot and staying hot then cooling off) before the crack opened from water jacket to the crankcase. Im not...
  11. Scott06

    4.3 L Mercruser

    yes dodged a bullet, my neighbor had the same thing happen to his mastercraft a few years back. He got lazy it frooze then he winterized... core plug popped out. Intially he was ok but after 3-4 hard uses he started getting water in the oil. Bottom line just keep an eye on the oil for milkyness...
  12. Scott06

    Merc Alpha4 no longer available. What to replace it with?

    I think the rev 4 in general is an excellent prop but prop choice depends on your boat and how you want to use it. I get great holeshot, stern lift, and ability to trim out with the Rev 4. the pitch will depend on your boat and what its current engione/prop combo delivers in terms of WOT rpm and...
  13. Scott06

    More distributor trouble.

    check firing order
  14. Scott06

    Merc Alpha4 no longer available. What to replace it with?

    https://www.ebay.com/itm/133764978626 this one is better cost wise. I just set up a search get pinged when they list
  15. Scott06

    Starboard riser hotter than port on 4.3L

    No set rule of thumb but what you should do now since it is running at proper temp is either with a calibrated palm or better yet an IR temp gun see how hot they are. That way you know what your engine when running cool is, down the road if you have issues you have a baseline of what good looks...
  16. Scott06

    Need instructions how to remove merc 2000 3.0 L Engine from Boat

    Let it hang, start your rear mount bolts, put your alignment bar in via the gimbal bearing, adjust your font mount and then drop it down. The exhaust leave until after the mounts are down and aligned. If I recall the 3.0 has a intermediate down pipe with rubber connectors on each end so you have...
  17. Scott06

    Merc Alpha4 no longer available. What to replace it with?

    https://www.ebay.com/itm/184839585859?epid=21005710659&hash=item2b094c4043:g:y28AAOSw47VgoE~M not sure what your defintion of cheap is...especially considering shipping down under.
  18. Scott06

    Merc Alpha4 no longer available. What to replace it with?

    I had 20 % slip with a vensura on my boat, but the slip allowed better holeshot as the engine would get in its power band sooner. chris seeing your results which mirror mine with vensura, you will really want to try a revolution 4 17” at some point. I lucked out and found an essentially new one...
  19. Scott06

    Pitch

    I wouldnt buy a prop until you verify current wot rpm. Current number will inform your need fir pitch Assuming your current prop is in the recommended 4400-4800 rpm range at wot, then go with a 17 or 18” pitch 4 blade if you want more holeshot. Going down in pitch will give more power on...
  20. Scott06

    Pitch

    What is your current prop and rpm do you get at WOT.
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