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  1. Scott06

    Mercruiser 350 mpi horizon 2007 max rpm 2500 today

    Is t there a switch that sees f you are in gear vs neutral ? If so might be limiting rpm just thinking it’s not in gear
  2. Scott06

    Mercruiser Alpha 1 gen 1 Trailer Button on outboard

    There can be a stern mounted drive up switch mounted usually it’s on the side of the hull by where the swim platform is if it has a non factory swim platform it might be under it
  3. Scott06

    Tb IV intermittent spark ?$#???

    If u now consistently have 12v at coil go through the thunderbolt troubleshooting guide in stickies Get an oem merc sensor …
  4. Scott06

    Exhaust Bellows or Not

    You are fine with torn missing or destroyed exhaust bellows. Having seen how well the merc stuff holds up , it’s not worth the time you put into doing the work to deal with pos parts that don’t fit or don’t last
  5. Scott06

    Knocking sound - what is it? [video]

    I wouldn’t install that gasket with those ports. Would think someone swapped the head or manifold. Maybe merc tech support can offer a solution or just order the earlier style gasket and see how it matches up I believe the Barr kit is you can mix and match earlier and later manifolds and heads
  6. Scott06

    Exhaust Bellows or Not

    Are u using oem bellows ? I just changed my original ones last year 2004 boat. The exhuast had torn two or so years before but driveshaft bellows were just starting the chaffe against gimbal ring
  7. Scott06

    2005 350 Mag dropping fuel pressure under load

    Always the simple stuff . Great job finding it
  8. Scott06

    Gimbal Bearing Alignment/Installation Tool Question

    Don’t know the dimension u are looking for but I just used a 2 ft length of 3” pvc pipe to drive it in
  9. Scott06

    Knocking sound - what is it? [video]

    Two different styles of head ports and corresponding intakes were used on 3.0 s nit sure the transition year. would make sure you have match head and manifold and get correct gasket
  10. Scott06

    Tb IV intermittent spark ?$#???

    Yes missed that the power is dropping out, would not be the tach dropping 12 v . But it tach is reading wonky would leave it disconnected anyway
  11. Scott06

    5.7 EFI stalls when warm and shifting into gear

    I think what he was getting at - If it maxed out at 4400 rpm just means that this set up was over propped a little and would have been at some points lugging the engine which can lead to detonation and higher exhaust gas temps being under max load a lot due to over pitch. Would suggest going...
  12. Scott06

    Tb IV intermittent spark ?$#???

    given tach comments disconnect the tach wire at coil and see if issue gies away. a faulty tach can kill spark
  13. Scott06

    axle repair sleeve question

    If u ever need to get it off you need some heat They make a silver version 660 that I have used for work assemblies on industrial mixers that is fantastic takes up big gaps
  14. Scott06

    Maybe my turn for new boat time

    Did the boat builder or dealer rig the outboards Should’ve stuck with IO 😎….
  15. Scott06

    Did I over prop?

    Yeah but i figured it wasnt obsolete for a few years after it was no longer sold new.. either way its old .
  16. Scott06

    Did I over prop?

    You have it backwards increasing pitch reduces rpm at wot. I would expect 800 rpm less with this. You either have an incorrect drive ratio or engine that needs maintenance attention , or both. You need to go down in pitch not up by 165 stringer you mean engine or drive. If he used a drive...
  17. Scott06

    Water in reservoir

    this page is too your drive by serial number https://www.marineengine.com/parts/mercury_marine_parts/sn/0l703045 there are pages for both the driveshaft housing (upper) and gear housing (lower) on each page is a seal kit for each one, they may also have a complete kit for entire drive
  18. Scott06

    Sound deadening

    New boat is a 5.0 and is quite a different tone than the 3.0. Wether on the water or on the trailer the 3.0 was way louder than the 5.0 ...
  19. Scott06

    Sound deadening

    They had me use PL polyurethane construction adhesive- again were particular about right materials for the application. I think I went with the cheaper end of what they offer (eggcrate foam which was what was in there from factory) probably spent $125-200 and it made a noticeable difference...
  20. Scott06

    axle repair sleeve question

    absolutely thats what it is made for- the green loctitie is a retaining compound made for sleeves and bearings on shafts etc where there is some wear. You can also use a center punch and stake the axle before sliding the sleeve on. This will raise a the area around where you punch to provide a...
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