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  1. M

    Engine swop ? about Timing

    I had an cracked head issue with My 1993 3.0 so I swopped the engine with A spare 88 3.0 that I had. I swapped over the manifold , carburetor, and distributor from the 93 engine. The 88 engine had points the 93 has Ignition Module, any way I set the timing per my 93 engine which would be 1° BTDC...
  2. M

    ? About water in oil

    1994 mercruiser 3.0 Thursday evening heading back in after being on the water all day I noticed my speed was about 2 miles an hour lower. I thought no big deal the water is choppy maybe that's it. When I got to the truck the boat was idling ruff and I thought it may have sucked something into...
  3. M

    Making engine beds

    I have a 18.5 ft 1994 sea-pro dual console with a 3.0l engine in it. I will be pulling the engine and replacing with a 4.3 engine in the spring ( I fish in the colder months ) I have acquired 10 yards of 1708 and will most likely be using poly resin to build the beds. I will be asking more...
  4. M

    Mercruiser 3.0 to Mercruiser 4.3 swap

    I have a 1994 seapro with a mercruiser 3.0 engine that I am going to be swapping out with a 1999 4.3 engine. I have everything from the 4.3 from the engine to the prop. I have taken the measurements in the engine bay. And the area is actually a few inches wider than the area in the boat that...
  5. M

    1988 3.0 and 1994 3.0 swap

    I have a 1994 seapro with a mercruiser 3.0 engine it's starting to show signs of oil blow by pretty bad. I checked the compression and all cylinders were around 130psi. The engine runs pretty good for the most part the with the only issue being that when I come off plane it ideals around...
  6. M

    Still having shift issues and need / like some input

    I have been fighting shifting issues with my Alpha 1 gen 2 drive with s/n 0F321918 for a few years. It started out ratcheting 1 day out of the blue In forward gear so I made an adjustment to the control cable to get off the water. Once I got home I adjusted the cables using the method on youtube...
  7. M

    Alpha 1 gen 2 shift cable adjustment

    Ok so I have a question. In the mercruiser manual it says " After cable has been aligned, turn brass barrel 4 turns away from cable end guide " What is the purpose of this? Then it says. " For Commander 3000 Controls, if shift assist assembly attaching points do not align, verify controller is...
  8. M

    Shift Assist Assembly

    I have a 1994 with a mercruiser 3.0 and a commander 3000 remote shifter its always been stiff to shift in and out of gear over the past 2 years I have removed disassembled and cleaned the controller replaced the control cables, the lower shift cables, the lower unit with brand new and now the...
  9. M

    New control box

    I have a 1994 seapro with a mercruiser 3.0 my control box is hard to shift and it's sloppy which is causing problems with my shifting into reverse I have replaced all the cables and the only thing left is the control box can I replace my control box with 883709A01 I know this doesn't have a trim...
  10. M

    93 Alpha 1 gen 2 oil leak

    ok so I noticed that my reservoir was low on oil so I decided to do a pressure test.. I unhooked the reservoir and installed a gauge and tire valve there... I put 10 psi in the lower and it held over night so I left it for a few days and it dropped 5psi I figured that could be from temp change...
  11. M

    Mercruiser 3.0 Rebuild or not

    I have a mercruiser 3.0 I have been fighting issues with idling . I replaced the carb didnt fix the problem then I noticed that I had milky oil puddled on valve cover so I assumed I had a cracked block. I removed the elbow and found that the elbow is bad so that may be the problem with the water...
  12. M

    MerCruiser 3.0 to Omc 4.3 swop

    I have a 20 ft sea pro Duel Console with a Mercruiser 3.0 the engine has been given me problems idling so I bought a new carburetor that did not fix the problem then I noticed oil around the top of engine from blow by so I did a leak down test and I'm losing 40 psi give are take on every...
  13. M

    finding tdc for timing

    I have a 200 hp off shore carbureted engine SN 0G693618 . The boat is new to me and its not idling correctly. I know the P/O was a tinker because when I mentioned it he said you just have to adjust this screw a little and pointed to the max spark advance screw ... so before I go messing with...
  14. M

    Roller bunk Adjustment advise ...

    Looking for advise for roller bunk adjustment... in the pictures bellow you can see that I need to adjust the rollers on this trailer.. My question is should I move the bunks so that they are straddling only the 1 strike closest to the keel or should I spread the rollers apart and have them...
  15. M

    Trim O-rings

    Is there anywhere I can get O-rings for the trim system with out paying mercury's inflated prices S/N 0B143346 Thanks Mark
  16. M

    Gel coat damage on transom

    So I pull my 200hp motor off to replace the mounts and trim pump on a 91 wellcraft boat I just purchased I reinstalled the motor on sunday ( using 3m 4200 ) just to find out that the trim wont go alway down so I had to remove motor again to remove the trim assembly but I only removed 1 of the...
  17. M

    200 hp trim problems

    I have a 98 200hp that I bought with no trim motor on the pump I bought a new trim motor and pump assembly and the trim goes up and down but when it gets to the trim rods it acts like it's all way down down and sounds like its under alot of pressure... not sure what to check. Here is a video...
  18. M

    Crank end cap seals

    I just replaced the end cap seals on my 98 200hp ( figured it was a good time since I had the power head off for motor mount replacment) My ? is How can I check the new seal for proper sealing... before I put it back together ..
  19. M

    Sierra Upper mounts

    Does Anyone have experience with the Sierra Upper mounts part number 18-2144 ? are these rubber mounts or solid .... Thanks in advance Mark
  20. M

    Not Permitted

    Rule # 8.
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