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  1. Scott06

    Carbed Mercruiser 260 5.7L Missing Above 4000 RPMs

    Agreed none of those compression numbers would make me think the engine needs to come apart.
  2. Scott06

    fuel pump frustration

    https://www.summitracing.com/parts/crt-p4603hd
  3. Scott06

    1992 Mercruiser 4.3 w/ balance shaft and 1 piece rear main seal swap to newer year Vortec.

    Youwill need to buy a new intake manifold for the vortec heads so id upgrade to edlebrock 1409
  4. Scott06

    2013 monterey 204 fsx prop not operating

    Yes most likely prop hub has failed as it is intended to brake when yiu hit something. assume you are back on the trailer take prop off look at the hub there are two styles older rubber pressed in hub, or newer replaceable hard plastic insert. Run tge engine on the muffs and see if prop shaft...
  5. Scott06

    2003 mercruiser 4.3 issues

    take gray wire off tach first if needed This is thunderbolt ignition trouble shooting guide https://www.boote-forum.de/attachment.fphp?attachmentid=114582&d=1231576181
  6. Scott06

    3.0 Mericruser Manifold Help

    Whats the question are you looking for a different manifold that fits your carb ? What carb are u using? Or are you looking for what carb fits this manifold what year or serial number on your 3.0
  7. Scott06

    Trailer Guide Ons DIY?

    I adde some guides to a trailer i using pipe flanges and fittings
  8. Scott06

    Another surge question

    Tie down is not the best but has served me well for the last 6 years that bolt is in the hole to Lock out out braking when reversing take the bolt outand see if the brakes work
  9. Scott06

    Other causes for prop slip?

    No test against a shop tach or timing light with tach feature
  10. Scott06

    3.0, engine oil, breather tube questions

    The 3.0 I had in my old boat had about 800 hrs on it and 145 psi compression and I saw the same amount of blow by and oil as you are seeing. I thought it was an issue but had good compression, wouldnt worry about it.
  11. Scott06

    Carbed Mercruiser 260 5.7L Missing Above 4000 RPMs

    clogged exhaust is possible if an exhust shutter falls down into the wye pipe. They can make their way into the bellows and restrict exhaust. If you had the drive off recently and looked in the exhust bellows and that was clear look into the tops of the wye pipe. I cant recall if you measured...
  12. Scott06

    A little give on the shaft?

    When the prop moves in and out look at the nut I bet the nut and shaft is moving with the prop. Its a common thinking this is an issue, has come up many times on this forum
  13. Scott06

    Prop pitch change

    As mentioned elsewhere you want to prop it to hit in the correct WOT rpm range so more or less for prop testing. The big issue you will have if you dont know it currently is you dont know where to go with your next purchase because you have no baseline. My brother did the same thing because his...
  14. Scott06

    A little give on the shaft?

    What outdirve are you working on? For example a merc alpha drive when in neutral the prop shaft moves in and out a 1/8” or so. Im wonderingif the propis tight to shaft and its just normal endplay in prop shaft
  15. Scott06

    Prop pitch change

    Really depends on which prop you are thinking of getting and what your current Aluminum prop does in terms of WOT rpm (3500 is way low for wot, assume that is cruise speed or tach is off). If you aregetting to the top of reccomended rpm range for engine AND you buy a basic stainless prop like a...
  16. Scott06

    2009 Sea Ray 185 4.3 TKS - a few questions.

    Not sure what questions you had. Looks good only only comment would be why use a non marine rated ignition module, generally issue with non marine rated electrics in a boat is spark potential in environment where gas vapors can accumulate i found merc thunderbolt v modules on ebay for around $200
  17. Scott06

    Engine alignment

    Mine were in at an angle also , obvious that hoke was drilled at an angle while engine was in place. no issues for me
  18. Scott06

    Changing to stainless steel prop

    What are you looking to improve ? Ive found four blades to improve hole shot stern lift and planning speed. Larger boat like that may like a revolution 4 in 15 or 16” pitch . If you aren’t dead set on stainless might be good to try an aluminum four blade like a michigan vortex 16” . They are...
  19. Scott06

    5.7L Mercruiser; Engine Running Weird

    You may need to clean fuel tank and lines otherwise it will keep plugging
  20. Scott06

    Temporarily repair toon logs.

    Find a local Tig welder ask at marinas or boat repair folks they will usually know who does it locally.
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