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  1. Scott06

    Water in oil

    Im sure that will be fine . If you are looking to save a few bucks on oil use Rotella T4 15w40 Conventional. Its fine for marine use and is about as inexpensive as they come
  2. Scott06

    1987 Mercruiser 454 Loud 'Popping Noise'

    Probably a lean sneeze due to running lean . Would look at fuel supply and carb rebuild. What do the spark plugs look like ? Would bet they look lean
  3. Scott06

    Is there a way to tell if the impeller is working?

    Look in the service manual there is a water pump volume test where u take the hose from outdrive and collect the water in a bucket was like 3-4 qts In 15 seconds. This is in the water not on muffs
  4. Scott06

    Camshaft specs. needed, modification feasible?

    It will likely run ok with jetting changes but won’t see performance gains until you add a 4 bbl
  5. Scott06

    Sank the 'ol girl!?!

    Did u run through troubleshooting guide for t bolt here https://forums.iboats.com/threads/how-mercruiser-thunderbolt-ignition-systems-work.676476/ ? If module is bad yes go delco est, but if just sensor in dist replace that
  6. Scott06

    Revolution 4 19 pitch

    Best bet is ebay I put in saved searches for the props I wanted to test, eventually one comes up but for a Rev 4 expect to dig into your pocket a bit. I saw they just tweaked the Rev design under the Mercury Racing moniker as Ventera so maybe used Rev 4 prop prices will drop. It took me a year...
  7. Scott06

    350 Mag Mpi hard to start when warm or hot

    Screen shots attached show how to do a static and running valve lash. if done correctly when you go one turn past zero lash the valve should not be open assuming the cylinder is on rdc on compression stroke. If it opens likely yiu were past zero lash when yiu started the turn
  8. Scott06

    Mercruiser Oil Pan Replacement and Protection

    Have seen others use Bed liner on the oil pans to prevent corrosion
  9. Scott06

    1987 Larson 120 motor removal

    No pull the outdrive first then motor. Pulling outdrive eill take you longer to read the manual of how to then to actually pull the drive
  10. Scott06

    Merc Alpha 1 trim solenoids strange behavior.

    Your up button has two detents in it push lightly and you have trim until limit switch kicks in. Push it farther in and u have trailer to go all the way up
  11. Scott06

    hei ignition retrofit

    Looks like a no name amazon brand
  12. Scott06

    hei ignition retrofit

    You need a shift interrupt with alpha drive as well.
  13. Scott06

    Bellows Kit for an Alpha One Gen Two?

    https://nuwavemarine.com/mercruiser-i-o-inboard/mercruiser-transom-assembly/mercruiser-alpha-gen-2-transom-assembly-parts/alpha-gen-2-bellows-repair/oem-mercruiser-alpha-1-gen-2-transom-bellows-repair-reseal-kit-30-803099t1/ you also need a tube of bellows adhesive, also not a bad time to do...
  14. Scott06

    Stupid Question from New Member

    110 hp is the 2.5 Chevy based. Neighbors had one in their StarCraft
  15. Scott06

    Stupid Question from New Member

    This - had to chisel mine off. Your engine is the 153 ci/2.5 l which is the smaller brother to the current 3.0. The engine family is related to the 194/230/250 ci straight 6, and was first insatlled in the 62 chevy II. Your drive set up is likely the early EZ shift vs the newer MC-1 drive. Merc...
  16. Scott06

    Removing trim senders screws

    had to drill and tap mine out #10-32 i belive
  17. Scott06

    '98 Stingray 190LX 4.3 Merc Stuck in Muck Issue

    Take off the elbow and see if passages are clear
  18. Scott06

    '98 Stingray 190LX 4.3 Merc Stuck in Muck Issue

    What is super hot in terms of temp two thoughts not unusual for manifolds to be different temps due to not being level. Also since this thread started with sucking up silt could be clogged
  19. Scott06

    Engine making new sound? Can I still use it?

    Its compression related either exhaust manifold gasket leaking or head gasket leaking did u do a compression test
  20. Scott06

    Sank the 'ol girl!?!

    Yeah I would pull the distributor cap and look for corrosion. Yes ignition module and sensor in distributor would likely get smoked if they went swimming The TBV ignition is fantastic until you need the module which is crazy money . I bought a spare on eBay years ago for $200 but don’t see...
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