Search results

  1. Scott06

    Help with prop ID (pics)

    Normally the Hand stamping like that are done when it goes to the prop shop for rework or repitching . Probably only way to tell is to put it in a pitch block, maybe side by side comparisons vs other black max type props sitting on the shelf. With a pressed in hub you can tell that prop has some...
  2. Scott06

    Need to determine best prop for weird setup

    In theory, as danforth points out with the timing shunt in to lock it in base mode should be at 1 deg BTDC, with shunt out it will be around 10 at idle, at 2800 or so should go up to 25 or 28 total. you just want to confirm it is advancing. if it doesn’t advance could be bad module or base...
  3. Scott06

    Replacing an Alpha1 Gen1 205 V6 for 87 Cobalt 17BR

    Use a little grease to hold the roller and shift cable end together. put it in fwd hold prop counter clockwise with bungee cord to keep it from popping out of gear you can turn it ccw to line up splines so it wont pop out of gear. Check your alignment. Should slide on with out too much work if...
  4. Scott06

    Bravo 3 loss of lube oil - slowly then rapidly x2

    The bearings are bigger than the ID of the seal so on the yoke the seal goes on first then the two bearings tightened down until you get the correct rolling torque. I bought a beam type 0-75 in lb wrench for about $65 (McMaster Carr) when I changed rear end gears in my 65 Pontiac. When I did the...
  5. Scott06

    2011 Tahoe Mer 4.3 - engine miss firing

    to add tot the list above of possible issues bad pressure regulator, stuck anti siphon valve
  6. Scott06

    4.3 LX water in the oil...

    Gen plus is the newer true Vortec head engines with 8 bolt intakes. Bolts are vertical two in each corner of intake
  7. Scott06

    2011 Tahoe Mer 4.3 - engine miss firing

    @alldodge may have some ideas but would suspect that measuring fuel pressure is probably a decent next step
  8. Scott06

    2011 Tahoe Mer 4.3 - engine miss firing

    I would start with what do the plugs look like and what does contents of fuel filter have in it? Is this carbed or injected? When it miss fires check the spark with spark gap tester, if carbed look down carb and pump throttle to see if there is any gas in carb coming out of accelerator pump
  9. Scott06

    Alpha one gen 2

    these guys sell remans I believe. https://www.sterndrives.com/mercruisersterndrives.html Confirm the ratio of the drive before ordering yours is most likely a 1.62:1. Thes guys sell the aftermarket SEI drives that many folks use (about $2100) and OEM new drives ($3600)...
  10. Scott06

    Need to determine best prop for weird setup

    Yes the Innova timing light will do both tach and timing functions. This goes over checking total advance total timing is at 6:53
  11. Scott06

    6.2 MPI Whine noise when revs

    Had the same thing on my old boat a few years back- ran fine when winterized, made a similar noise when back in in the spring. Gimbal bearing was bad, had some water in bellows , bearing gets corroded while it sits. U joint could do the same thing. Did you have a lot of water in the bilge at...
  12. Scott06

    Need to determine best prop for weird setup

    You will need an advance timing light. I have an old Craftsman with a dial on it, you can put in the advance on the dial and it should time with the TDC mark on the balancer. Just looking for total degrees of advance, with out advance engine will not make power Some more modern timing lights...
  13. Scott06

    Alpha One Gen 2 prop shaft seal replacement

    So I am about to get the boat in the water. Given the new bearings in the drive - is a break in recommended? I re used the gears just new bearings and seals.
  14. Scott06

    Need to determine best prop for weird setup

    weather you swap uppers or props verify the tach is accurate. Also would do a sanity check on ignition timing and engine tune up (carb/fuel system/ignition components). Check total ignition advance at like 2800 should be 24-28 degrees or so. Not saying this is the root cause but not getting...
  15. Scott06

    6.2 MPI Whine noise when revs

    Agreed on this path forward.
  16. Scott06

    6.2 MPI Whine noise when revs

    Pull the drive check u joints and gimbal bearing did u have water in bellows over the winter ?
  17. Scott06

    Hard plane after switch from points ignition

    What is the total timing advance you get at 2800 rpm? Would focus on matching that to what your engine had for timing curve from the factory
  18. Scott06

    2006 MerCruiser 4.3 to MPI Swap

    I think it depends on what harness is on the engine . It may have the standard 10 pin cannon plug that fits you boat harness. If it is the newer 14? Pin they make an adapter mercruiser adapter harness...
  19. Scott06

    Need to determine best prop for weird setup

    Have you verified the tach against a shop tach and the Speedo is that gps or the dash speedo? The factory water pressure Speedos are notoriously inaccurate
  20. Scott06

    Bravo 3 loss of lube oil - slowly then rapidly x2

    This is the truth always impressed with level of detail in their manuals, and they give complete transparency of what you need to do to service
Top