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  1. Scott06

    Advice on Removal of manifold Mercruiser.

    So if you havent run it before investing a bunch into it I would pressure test the cooling system on the block. just block off the water in and out hoses to the block and rig up fittings to fit compressed air it should hold 15 psi or so.
  2. Scott06

    Advice on Removal of manifold Mercruiser.

    2 clamps is the factory set up. On the crack so you used it and confirm no water is getting into the oil? these and the similar lineage 3.0 crack just below the manifold on head side when not drained. if you are lucky it doesnt go into the crankcase and you can make a halfway decent shade tree...
  3. Scott06

    bravo III milky oil but holds pressure for days

    this is good advice. I did my 2004 alpha gen 2 last winter. Picked up fishing line on prop seal. saw some corrosion on the parts took drive apart replaced bearings in the upper as upper bearing in cap was corroded. In the end I think the corrosion was from the boat sitting before I bought it...
  4. Scott06

    Advice on Removal of manifold Mercruiser.

    yes you have to separate the rubber bellows/exhaust connector from the elbow. Usually over years of heat the rubber gets stiff and it sticks to the elbow so some persuasion is needed.... loosen the upper clamps on the rubber drop them down and stick a flat screw driver pick etc to get the rubber...
  5. Scott06

    Have spark and fuel, can't get the rebuilt engine to start

    Worth checking compression if rockers are not adjusted correct could hang valves open
  6. Scott06

    Have spark and fuel, can't get the rebuilt engine to start

    Verify the firing order and that you are timing it on tdc of compression stroke vs tdc of exhaust stroke. loosen distributor and turn it while cranking to see if you can get it to stay running
  7. Scott06

    1998-2000 Custom Boat Fuel prime issue (5.7L Mercruiser Inboard/Stern Drive w/ Alpha One Mercruiser outboard Drive)

    Would look on top of fuel tank pick up tube usually in the barbed fitting where it transitions to fuel hose there will be an anti siphon valve. Is a small spring loaded valve that can stick closed. In event of a fuel line rupture it prevents the gas tank siphoning out to bilge. would also look...
  8. Scott06

    How to Diagnose No Fuel at Carb 7.4

    no gas is coming out of that connection right? That should be connected via a Tygon tube to a nipple on the carb to dump fuel down throttle bores in event of a diaphragm rupture vs into the bilge
  9. Scott06

    Confused New Owner of an Old Boat

    Yes it is a Chevy 6. Merc used several sizes over the years ,most common was the 250 cid 165 hp. was also available in earlier 230 cid/150 hp and later taller deck 292 cube models. Very common reliable engine. GM stopped using them in the US in 1982…had the 150 hp version in my grandfathers 1966...
  10. Scott06

    How to Diagnose No Fuel at Carb 7.4

    Yes the check valves flow from tank through pump to carb. The diaphragms in that pump are fine unless the check valves are bad pump should work. given you found the pick up tube was molested and goobered back together I’d start there
  11. Scott06

    Mercruiser 888 shift interupt

    click on his name below the avitar, it will bring up his page. There is a button to start a conversation so you can private message him. I believe he is a professional boat mechanic just guessing he has some working spares for the no longer available item
  12. Scott06

    94 Cris Craft Concept 268

    One thing to keep in mind as you continue your boat search is how much of the work can you realistically do yourself? If you need to rely on taking the boat somewhere look around at what shops are near you and what they support. while the King Cobra is a different animal than the cobra, it...
  13. Scott06

    Mercruiser 888 (302) Cylinder Head swap?

    this is exactly what is being recommended to me for my 65 Pontiac engine rebuild. Well known Pontiac engine builder told me that the hardened seats are not necessary. Also can run into issues when pressing them in and hitting water jackets as these older heads were not cast to have inserts. This...
  14. Scott06

    Confused New Owner of an Old Boat

    Yeah probably easier to get a SEI lower
  15. Scott06

    No Spark, checked battery and coil, what next?

    You will need to go through the thunderbolt troubleshooting https://forums.iboats.com/threads/how-mercruiser-thunderbolt-ignition-systems-work.676476/ there should be bullet connections for the distributor sensor which is the red and green striped wires. This is shown in the troubleshooting...
  16. Scott06

    Impeller Job - Mating Surface Corrosion

    These guys have very good parts breakdown https://www.marineengine.com/parts/mercruiser-sterndrive-parts/ can search by serial number here https://www.marineengine.com/parts/mercruiser-stern-drive/index.php
  17. Scott06

    A motor question on Cristmas day uggh

    Just get a long spade bit, when I did mine had a 15 -18” long bit drill was up by the exhaust manifolds. Holes were drilled at a slight angle. dont over think it on my boat the factory holes were done pretty sloppy, they are not doing as much work as you may think.
  18. Scott06

    No Gimbal Bearing Grease Zerk or Plug at all???

    100% it’s a sealed bearing from factory on a 2015 This video has a service bulletin from 2009 that outlines the change
  19. Scott06

    No Gimbal Bearing Grease Zerk or Plug at all???

    yes on later ones it is not drilled. Ot sure exactly when they started doing the perma lube bearing but can’t imagine they drilled the transom after that .
  20. Scott06

    Please help identify this old sailboat

    I would think it was home made as well. otherwise there would be some type of identifying marks on it. Are you trying to buy another one?
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