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  1. M

    Engine swop ? about Timing

    Anyone ?
  2. 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...
  3. M

    ? About water in oil

    Fresh water only but I pulled the engine and installed the spare 3.0 engine I had. I suspect this has been an onging issue for a while. every since I got the boat years ago I was chasing an issue with when ever I came off plane from I wide open run the engine would idle high like 1000 rpm and if...
  4. M

    Mercruiser Engine ID - No serial number

    if the number is 01 its a 2001 if it was a 1991 it would be 91. I have 2 of these engines and the one from my 1988 boat has an 88 on the block and the one from my 94 boat has a 93 on the block
  5. M

    Making engine beds

    so I pulled the engine due to a hole in the head, so i figuered it would be a good time to take a picture of the area that I will be puting the v6 in.. The mount on the engine measure to be around the location that I have marked on the picture
  6. M

    Mercruiser Engine ID - No serial number

    what I circled is the year the engine was built
  7. M

    ? About water in oil

    Found the problem theres a hole in the head right behind the thermostat housing
  8. M

    ? About water in oil

    Thats on the agenda for tomorrow no this was a cross your fingers and hope for the best trying to finish to last few months of my fishing season and my machine shop is 3 weeks out not sure i couldnt imaging i wouldnt be this engine has never ran hot
  9. M

    ? About water in oil

    Thats what im thinking. I was fine all day untill the 30 minute run back up river. I guess maybe a weak spot in the block
  10. M

    ? About water in oil

    Ok so got the head back on the boat and run the engine on the muffs but ended up with the same problem ( water getting in cylinders 1 and 2 after just a few minuts of running ) so i made a few videos for you guys to show whats happening video 1 is showing combustion coming from the...
  11. M

    Mercruiser Engine ID - No serial number

    Here's a link https://www.marineengine.com/parts/mercruiser-sterndrive-parts/30l-gm-181-il4-19901994/0c856559-thru-0f353099/fuel-pump-and-carburetor
  12. M

    Mercruiser Engine ID - No serial number

    Can't post link to mercury parts look up but if you go to 90-94 3.0 it's under fuel pump
  13. M

    Mercruiser Engine ID - No serial number

    If you look under fuel pump and carburetor the electric choke is listed for the 90-94 3.0
  14. M

    ? About water in oil

    My first thought was to do this but my machine shop is 3 weeks out to get to it so I figured a $50 head gasket and if the problem is still there then my season is over so I'll just pull the engine and start getting ready for the 4.3... Maybe I dumb way to go about it but I'm really only trying...
  15. M

    ? About water in oil

    I will pressure check the jacket when I get the head back on
  16. M

    ? About water in oil

    The 2 cylinders with water in them are the farthest from the elbows it's the 2 front cylinders and the elbow is in the back Also if it was the manifold or exust why is compression escaping from the thermostat housing And yes the kit was a barr kit with the metal looking gasket
  17. M

    ? About water in oil

    I fish 2 times a week this time of year and the boat has been fine it was good all day on Thursday when I fished. The problem started while coming back in from a 30 minute run up river its never overheated. I replaced the manifold and elbow as part of preventive maintenance and the exhust...
  18. M

    ? About water in oil

    Fresh water only and the manifold and elbow where replaced and only have 15 hours on them... also I only have water in 2 cylinders
  19. 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...
  20. M

    Lubriplate SPO 255 and Loctite 5900

    Any of these should do just fine I do like the red and tacky...
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