Search results

  1. Scott06

    Mercruiser 3.0 135hp. Crank and rods

    sage advice. Keep it to 9.0 or 9.5 to 1 and you can live on 87 octane. You may be able to mill the dome off the aftermarket pistons. Your machinist would know the options
  2. Scott06

    Single point drain tech tip

    That’s why I had kids, my 15 years old is learning how to do it. I was about 13-14 when I started working on my grandfathers boat.... teach me to work on a boat I can waste a lifetime....
  3. Scott06

    Oil change could be easier...

    Yep I use the same best money I ever spent used it both through the dipstick tube and off the drain hose connected to the pan. Pump it go chug a beer come back and it’s done
  4. Scott06

    1994 Mercruiser 3.0 high idle off plane

    What gasket was used between the intake and the carb. I ran into a sI I,at issue on my 1990 3.0. It had a single hole in the intake but yet had a two hole gasket below the carb. When doing a routine carb rebuild , the kit came with two gaskets a two hole and one with an oval hole that more...
  5. Scott06

    1994 Mercruiser 3.0 high idle off plane

    The Webber 4 bbl used a return spring as well. 24-897454 - Spring I bought one and installed when I upgraded to a Edelbrock 4 bbl on my 5.0, used that and the throttle bracket off the Webber equipped 5.7 and 4.3 s
  6. Scott06

    Duoprop F7 is too big by 400+rpms

    You may want to verify the tach is reading correct at 4200 rpm before you make decisions on prop pitch. I would think if you are only hitting 4200 rpm due to too much pitch it would be lugging the engine on hole shot.
  7. Scott06

    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    More likely than $50 cost diff was how many engines a particular boat builder had in inventory . My ‘91 sea ray 170 had a 1990 3.0 with one of the last (by serial number ) alpha gen ones same happens when I’m came out with the cobra drive they held back sales until builders could sell their...
  8. Scott06

    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    Ok if you have water in the oil yes block is likely cracked. Look under the heads in the lifter valley That is the typical crack location.
  9. Scott06

    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    So it doesn’t sound like you know the engine is bad yet? Might just be fuel or carburation ? An engine with a cracked block will run just fine until the crankcase fills with cooling water . reason not to use the crank bolt is if the engine is locked up you can snap the bolt off Then u are f’ed...
  10. Scott06

    Rebuilding or replacing Mercruiser 4.3 in 1996 caravelle 1950SE

    I did just that in my sea ray 200. Bought it with a known cracked 4.3, but boat only had 37 hrs was in great shape otherwise. I bought a partial engine plus exhaust manifolds and elbows from a Michigan motors. A couple of things to consider my boat was sold with a 5.0 so I had 4” inches in front...
  11. Scott06

    New 205ss crownline-is 200 HP enough?

    True it will be alright, but I have yet to own a boat with too much power. QB is right you can prop down for water sports, this is why I run a 4 blade, as generally it is too rough to bot WOT much anyways. does anyone know what the largest engine available in this boat is? Is The biggest 250 hp?
  12. Scott06

    1997 Maxum 5.7L Mercruiser need carburator

    Likely a basic cleaning and rebuild would do it As mentioned above. The Sierra options are new aftermarket copies of the mercarb you have , should be a relatively bolt in replacement If you don’t want to rebuild. have you done other tune up items like cap rotor plugs and wires as well? May not...
  13. Scott06

    06 Caravelle 230 Seahawk WA 3 blade or 4 blade

    Ken at Propgods has a mobile prop trial service, they are in Sarasota if that is reasonably close. I think Prop MD offers exchange as well Via shipping. I don’t have any experience with boats similar to yours but on both of my bow riders I got similar improvements you are seeking going from 3...
  14. Scott06

    Winterising Q

    In theory removing it over winter layup will reduce the amount the impeller takes a set , bends the vanes back, but if it’s a PITA to get to I’d leave it alone and just replace it more often.
  15. Scott06

    Bravo 3 gear ratio

    Usually it’s just near the serial number - on left hand ( from rear of drive) side of upper it maybe imprinted on the mercruiser label but it is stamped under this on the drive. I think there are sites on line where you can look it up if you have the drive serial number off the owner literature
  16. Scott06

    VP 4.3 GL vibration

    Remove the drive and check gimbal and ujoints
  17. Scott06

    Mercruiser 5.7 Thunderbolt 5 Hard to Start

    To run you need compression,fuel, and spark. You verified 12 v at the coil in run but do you have adequate spark at the plugs? If you have spark dump a little gas down the carb if it coughs or runs a bit you know it’s fuel related, either supply or carb needs rebuilding. Somewhere InThere verify...
  18. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    there are no relays In The harness. Start with first things first. If the plug wires fall off fix that first. I would suspect this is part of your intermittent spark issue . Rule this out. Check if there is 12 when cranking On the r terminal. If there is it replace the starter, if there is 12...
  19. Scott06

    Mercruiser 3.0 135hp. Crank and rods

    Bearing clearance or connecting rod big end out of round causes that . If you can’t find someone local who is comment machine shop wise buy from somebody like Michigan motorz. New base engines are about$3800, reman are like $2400. you can save some getting yours rebuilt just needs to have...
  20. Scott06

    No spark plug spark... 170 MC , 1985 Sea Ray

    Yes start with correct wires...I bet you can take needle nose pliers and stretch the connections so they firmly fit. Didn’t u just replace all this? Start by zeroing the mileage with wear otherwise you are chasing garbage
Top