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  1. Scott06

    Prop Contacts Trim Tab Only When In Gear Not Neutral

    There is normal fore/aft play in shaft that I think gets taken up when it locks in gear. Remove prop lock in gear and see what happens I think it’s normal just need to check clearance when changing props
  2. Scott06

    Prop Contacts Trim Tab Only When In Gear Not Neutral

    Check everything is still tight. Not uncommon to have to trim the trim tab with different props nothing a grinder can clearance.
  3. Scott06

    Rapid Outdrive Anode Loss

    Do you have correct annodes for salt water and is there shore power on your boat or nearby boats. Likely some stray current in the water. on my mercruiser i found better performance with oem merc annodes vs aftermarket. They lasted longer and i had less drive corrosion .
  4. Scott06

    Engine dies after 30 seconds of running

    I dont think the boat is new , i think the engine or carb is (Quicksilver…). Pretty sure by 2015 at latest all new boat carbed motors were gone. You could however buy new or reman carbed engines
  5. Scott06

    Engine dies after 30 seconds of running

    Does it run for a full 30 sec or is it actually less time ? Sounds similar to when my man oveboard switch got tripped , would start fine then die when key went into run …
  6. Scott06

    4.3 Engine coupler issue?

    Could be or might be a defective coupler was it oem or aftermarket? Do u still have the old coupler? If i recall you had freeze damage to the orig engine ?
  7. Scott06

    Can I install a newer outdrive?

    Yep was 1.98 on older drives, at some point they changed the tooth count/gear design so all ratios changed slightly 1.98=>1.94, V6 went from 1.84=>1.81 … etc
  8. Scott06

    Can I install a newer outdrive?

    You should look at a SEI 106 aftermarket replacement for a alpha gen one , you need the 1.94 ratio https://www.sterndrive.cc/product/Fits-Mercruiser-Gen-I-1-94-Ratio-1941017.html
  9. Scott06

    1986 Mercruiser 5.7 Engine Rebuild Crankshaft Questions

    Make sure you get the correct rods. Maybe they didnt redo the rod big ends correctly. or if you cant correctly measure etc might be better spending more and get a new base or complete reman. You could update to vortec head engine and pick up 30 hp https://www.michiganmotorz.com/ i got a new...
  10. Scott06

    Can I install a newer outdrive?

    On port side or what engine do u have …
  11. Scott06

    Can I install a newer outdrive?

    Any mc1, R,MR, or alpha gen one will bolt in and work fine if gear ratio is same
  12. Scott06

    1986 Mercruiser 5.7 Engine Rebuild Crankshaft Questions

    Marine and truck engines use same parts on same assy line. Yes if you cant acess a machine shop buy a rotating assebly from summit or like often good aftermarket parts like this arent much more than maching your old parts. you still have to verify bores etc are ok as it sounds like someone...
  13. Scott06

    Part Identification

    Probably the vent for the fuel tank. My old boat had a separate vent line going to side of hull by conssole. does look in bad shape corrosion wise
  14. Scott06

    1997 mercruiser 4.3 starts right up, runs for about 30 seconds, idles down and dies repeatedly. Oil gauge doesn't peg at all. No oil pressure alarm.

    Jumper around the oil pressure switch that supplies power to fuel pump and test it.fuel pump is fed power off starter during cranking, then off ignition circuit via oil pressure switch when in run. Seems like fuel bowl is getting filled during cranking then runs til bowl is empty. verify oil...
  15. Scott06

    Is My Impeller Bad? Mercruiser 228

    pressure test it with a radiator type tester if u loose a qt in 15 min its going somewhere
  16. Scott06

    Mercruiser thunderbolt IV ignition module

    I think so. This diagram shows the green white from the shift interrupt bonding with a wire going to module
  17. Scott06

    Is My Impeller Bad? Mercruiser 228

    When was last time heat exchanger was cleaned. Most heat exchanger /fresh water kits use a bravo style belt driven pump on older mc1 and alpha gen one set up i believe. You need to move more water through the heat exch than raw water. Did it ever work with this heat exch or did you put it on...
  18. Scott06

    Replace Bravo2 Lower Unit W/ Bravo

    Yes but what prop size are u running bravo 2 allows for huge prop diameters for certain applications Like house and workboats
  19. Scott06

    Squeezing more from 5.0L 220hp

    I have a 5.0 with this manifold https://www.michiganmotorz.com/5-7l-4-bbl-vortec-cast-iron-intake-manifold-1996-current and an edlebrock 1409 has excellent throttle response and midrange. came as part of a partial engine from Mich Motorz i have that in a 21 ft bowrider thats heavy for its...
  20. Scott06

    same speed with different props

    I thought that the reason they give a wot rpm range is the power in that rpm range is basically the same. The dyno curve on the vortec flattens out in that rpm range Some engines have tighter wot range hence the one inch pitch increments in props now. and i completely agree prop to the top of...
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