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  1. K

    Mercruiser 165 6cyl inline dies when boat is in the water

    In that case try the 6 gallon outboard method. This is a tried and true way to locate fuel problems, or rule it out.
  2. K

    Timing mod: running or not running engine

    For me to keep from having to turn on & off the water & jumping in and out the boat I also set the dwell like SD. I then attach the spark plugs to the wires and leave them grounded on the manifold, spin the engine to set the timing.
  3. K

    Mercruiser 165 6cyl inline dies when boat is in the water

    In post#4 you said that with an electric fuel pump the engine runs. Am I wrong the way I am interpreting that? Have you ever tried by passing the tank by using an outboard tank directly to the fuel pump with the primer bulb? If your engine is running out of fuel you may have a crack in the...
  4. K

    Mercruiser 3.0 won't "lock in"

    If the splines completely went away there has to be a alignment problem. sierra #18-2321 looks like the coupler that you need Mercruiser # 12632A6 sierra#18-4442 alinement tool. Every Mercruiser owner needs this.
  5. K

    Mercruiser 3.0 won't "lock in"

    A very good chance the vertical shaft is the problem.
  6. K

    Alignment adjustment, witness marks

    If you have a small bottle jack or an overhead hoist loosen the mounts and either under the harmonic balancer with the jack or with the hoist raise and lower the front of the engine. This makes getting alignment easy and fast. Then set the mounts, quite often the stringers are never the same...
  7. K

    How would a compromised bellows sink the boat?

    The 2 “O “ rings on the driveshaft are there to grip the gimbal bearing. There is usually a 1/4” breather hole at the 12 o clock position above the driveshaft. With a torn bellows water can really get into the bilge.
  8. K

    Mercruiser 3.0 won't "lock in"

    There is a tutorial on this site on how to adjust the shift cable.
  9. K

    Mercruiser 409 engine severe vibration issue

    It has to be a flywheel problem. And maybe the wrong harmonic balancer.
  10. K

    1996 OMC Cobra (Ford 302 / VolvoSX collaboration) sometimes runs hot

    Remove the hose from the drive to the raw water pump. Try reverse flowing that hose into the drive with the drive up, look at the plastic through transom fitting, it could be cracked. Was this happening before the rebuild? The other problem could be a leaking head gasket which builds enough...
  11. K

    are there boat "salvage yards" anywhere in the U.S.?

    The Boat Yard in Marrero,La. Across the river from New Orleans.
  12. K

    Pre Alpha Mercruiser lower shift shaft removal?

    Once the bushing is removed the shaft can be pulled out. If the shift shaft is stainless steel leave it and install the new bushing. Whenever the shaft is hard to pull out means that the “C” shaped crank that moves the shift spool is slightly bent. This is caused when the lower shift shaft...
  13. K

    Pre Alpha Mercruiser lower shift shaft removal?

    Do not keep trying to pull the shaft out! There is a small clip and a washer under the bushing, if the clip should break it falls into the lower gear housing and could go through the gears. You need the tool to unscrew the bushing. sierra #18-9817 shift shaft bushing tool.
  14. K

    A-Mercruiser I-Drive Unit: pre-load required?

    The washer should be slightly ‘cupped”and you see where the nut contacted it so be sure to put some Loctite on the threads. The nut marking was not on the washer on the real early models.
  15. K

    1986 Mercruiser 170 running issue

    Try running the bilge blower, since a 470 is fresh water cooled it builds more heat under the cover. Also buy a new rotor for the distributor. Just to be sure you can try having the engine cover open before you start to pull the kids. If you are using ethanol based fuel it could be the fuel...
  16. K

    Need help finding part number

    Those numbers are not the correct ones. Those might be a production date code. 982226 is the # for an empty gear case. This will fit on your boat. What is the gear tooth count of your original housing? What is the gear tooth count of the housing you purchased?
  17. K

    Need help finding part number

    Do you know the difference between high and low profile upper gear housings? All Ford 351 upper gear housings were low profile. All upper housings before 1972 were high profile. There were some V8 Chevys that were high profile all the way to 1977 before the 400-800 series where all the drives...
  18. K

    1986 gimbal housing, gimbal ring, bellhousing, outdrive swap on to a 1968

    As Bondo said you will need to use everything from the engine back. I think the 470 flywheel housing will bolt to the 160. The SEI drive should work out ratio wise. If the SEI has the longer driveshaft it should connect to the engine. The front mount will be further forward Some early 160...
  19. K

    Stringer boot recommendations?

    OMC #313080. Sierra # 18-2767 is what you need. With some liquid soap or KY the boot can go over the drive, just remove the trim tab exhaust outlet which helps.
  20. K

    SX-A thread repair

    3/8x16” is the thread pitch. NAPA should have a Helo coil kit. Just to be sure thread the plug on a 3/8x16“ nut.
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