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  1. Scott06

    Trim Pump Fluid

    Was my understanding you can use any 20W non detergent oil or something close to it. I think last time I bought a gallon of ISO equivalent jack oil for $15 at auto parts store. Flushing would depend on how dirty the system is. You can leave the hoses off the cylinders or cracked and bump the...
  2. Scott06

    Oil in bellows

    These guys have you steered straight. Pressure test the drive to see if input shaft is leaking. Gear lube is pretty unique in smell... were you loosing lube in the bottle last year ? Some liquid will come out of the grease in the gimbal bearing and end up in bellows too. If drive pressure tests...
  3. Scott06

    Can the base of engine work? Two to bolts under engine are rusted and can

    Take the spark plugs out you will be able to turn it by hand on the pulley. You need to go through retiming your engine with a timing light. Need to bring engine to TDC on compression stroke (both valves closed) on #1 cylinder. Turn distributor so that rotor points to number one post on cap...
  4. Scott06

    Can the base of engine work? Two to bolts under engine are rusted and can

    Timing is off
  5. Scott06

    Need help with plugs selection

    You would get best results by starting your own thread. There were some early 4.3 s made with valve covers that say vortec but that do not have what later became known as vortec heads as the name bortec was used for many gm engines and a better cylinder head design 96 and up. not sure what is...
  6. Scott06

    Lost gearage?

    Yeah look in by your propeller nut on the hub, 2818 is prob just the solas rubex part number . Normally by the prop nut (may need to remove to see) there will be like 15x 17 for diameter x pitch. before you buy a lower gear reduction drive make sure you can get a prop in the lower pitch.
  7. Scott06

    Lost gearage?

    Yes likely 2” down in pitch with a 1.5 will have you at same rpm as a 1.65 with current pitch
  8. Scott06

    1970 181 to a 1978 181 different engine harness?

    You can instal the bearing without motor in the boat just can’t align the bearing to the coupler if it isn’t there
  9. Scott06

    Mercruiser 305 V8 running hot at low RPM fine at Speed

    I suspect it has something to do with emissions rating original engine had one of these CARB rating star stickers on it - I want to say the 2 stars. IT was originally a 4.3/190 hp with a Mercarb that had the antitamper cover on idle mix screw. Surely set as lean as possible to pass emissions and...
  10. Scott06

    Mercruiser 305 V8 running hot at low RPM fine at Speed

    My2004 carbed raw water came factory with a 160
  11. Scott06

    Barr manifold carb gaskets.

    I had this same experience on my 3.0 when i rebuilt the carb. Factory had used a two hole gasket with no support from below. My carb kit came with both gaskets so installed the single hole gasket thinking it would be ’more better’… cannot explain why but with the single hole gasket the idle mix...
  12. Scott06

    Alpha One Gen II shift shaft seals

    This is how mine were factory installed and i replaced them in the same manner last year when i did my bellows. Normally i believe the spring goes to the side you want to keep sealed so this is correct also make sure the bushings are replaced
  13. Scott06

    Need help with plugs selection

    Yeah That's a vortec so you will need MR43LTS or equivalent
  14. Scott06

    OK to Delay Recommissioning One Year?

    Don't overthink it. I let my 65 GTO sit for 8 years without running at one point. New Battery spun it to build oil pressure, no issues...
  15. Scott06

    Another Plumbing Question

    If you have hard water there may be sediment on heater as well There is an anode rod usually in the heater wonder if it is getting expended due to water chemistry. Would check that and replace the dielectric coupling
  16. Scott06

    Mercruiser 305 V8 running hot at low RPM fine at Speed

    Not trying to overcomplicate things but If you are running a 140 thermostat and the gauge is accurate there is still something going on here. I run a 160 thermostat and it stays at 170-175. When I used to run a 140 thermo in my old boat was sitting at 155 or so. I think the alarm went off at...
  17. Scott06

    OK to Delay Recommissioning One Year?

    I don't think you will have any issue. My neighbor at the lake is the opposite of me on maintenance- changes his oil every couple years, drops his drive lube if its not milky pumps it back in... he has a 99 bayliner/5.0 2 bbl seems to hold up ok. He doesn't put a ton of hours on it but gets a...
  18. Scott06

    Intake manifold verification

    You have a picture of it on the head ? What’s no good ?
  19. Scott06

    Mercruiser 305 V8 running hot at low RPM fine at Speed

    This thread from 2012 has the flow test numbers in post #4 https://forums.iboats.com/threads/water-flow-volume-test.555080/
  20. Scott06

    Mercruiser 305 V8 running hot at low RPM fine at Speed

    that doesnt look like a lot of water at idle. I'll see if I can find the water flow test from merc manual If balls were loose (try to set NOLA up good here...) they would be passing too much water at idle directly to exhaust then overboard. Thats why the lines off the T are cold - they are...
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