Recent content by GaJeff

  1. GaJeff

    73 Johnson 50hp blowing exhaust mix in cowl

    1975 Johnson 50hp 50ESL73R Finished a power head gasket set and there was a rubber vacuum boot shoved in this hole... I removed it knowing something like this would probably happen... Here I am. What is this hole for and why did the gasket not cover it? The gasket set is correct for the...
  2. GaJeff

    73 Johnson 50hp lower crank seal position

    Resealing a 50hp Johnson 50ESL73R and removed the lower powerhead seal cap and installed a new seal. I didnt make any reference marks before removing it. The cap has 2 small pin holes on each opposite side above where the I ring goes. Also the block has 1 hole facing the intake manifold. I...
  3. GaJeff

    Mercury 25/2s lower crank wear sleeve

    Replacing the lower crank wear sleeve on mercury 25hp. Removed old one and the new superceded part is to big. I've referred to the FSM and it talks about a coupler not the sleeve. Do I have the wrong part or am I missing something on the install Thanks Jeff Esn-0B281205 Part no. in...
  4. GaJeff

    Low Power on Rebuilt Merc 120

    Hey guys, Just finished up a 100% rebuild on my 81 120. It's running great at idle and does a pretty good job when under a load but it does seem to be low on power. I ran it on the test stand for 2hrs with no problems. Broke in the cam at 1500 rpm for 30mins of that 2hrs and varied the rpm the...
  5. GaJeff

    2.5 fresh rebuild... running rough over 2400 RPMs

    Been working on this engine throughout the winter. It has been fully rebuilt. I started it the first time yesterday and it ran great. I ran it at 1500 RPMS for about 30mins to run in the cam and called it a night. Today I started it and it still runs great but now anything over 2400 RPMs and...
  6. GaJeff

    81 Merc 120 square riser to round riser conversion?

    I have an 81 Merc 120 I/O that I'm rebuilding. One of the reasons for this rebuild besides being tired is water intrusion. I have the square style riser and it's rusted along the top. I was wondering if the round style would fit. I know that it sits at an offset but haven't actually seen one...
  7. GaJeff

    Difference between marine and standard starters?

    I know there is a difference between marine and standard starters and should not be substituted. What are the differences? I know obviously the alternators have the spark arrestors in them but i don'tsee any in the starter. I have a cracked nose cone on my marine starter where the long...
  8. GaJeff

    Orthopedic Fiberglass in Boat Building?

    Sounds crazy to me but I talked to an Orthopedic surgeon today and he said that he uses cast making fiberglass on his sailboat. Of course I though it was extremely funny be he was serious. No resin needed all you do is get it wet and and let it dry and it's as strong as any other fiberglass. He...
  9. GaJeff

    Merc 120 chipped cam gear

    Re: Merc 120 chipped cam gear The other cylinders looked fine. My rod and main journals looked good but the bearings had the first layer worn and the rod and main bearings under number 4 had some slight grooves. Looks like 4 had moisture in it at one time. It doesnt surprise me as the engine...
  10. GaJeff

    Merc 120 chipped cam gear

    I have a 1981 merc 120 that I tore down for a rebuild. This engine starts up with no problems at all and would idle fine. I put a vac gauge on it to see whats going on because it started to have a bit of vibration in it. Well the vac gauge was jumpy at 19 so I did a compression test. I have...
  11. GaJeff

    Need help with exhaust pipe to gimbal o-ring P/N

    I have an 81 merc 4cyl. just got done doing a resto and putting the engine back in. Im having a hard time finding the P/N for my exhaust to gimbal o-ring. Al the ones ive found look like an upsidedown "U" and are for V engines with a Y pipe. I have a single pipe and my o-ring is an oval. Does...
  12. GaJeff

    Center stringer? Do I need it?

    Re: Center stringer? Do I need it? Need some advice on this. These side panels are hollow boxes made from 1x4 boards. They dont seem to be structural at all. I had panels screwed to them just for looks. I was wondering if it would be ok to remove them and run my deck all the way to the...
  13. GaJeff

    Center stringer? Do I need it?

    Re: Center stringer? Do I need it? Got the stringers installed....not glued down yet, but installed. I still need to make the bulkheads and the outer stringers before i want to install them for good. I made the stringers from 3 layers of 5/8'' ply and laminated them together. I staggered them...
  14. GaJeff

    Center stringer? Do I need it?

    Re: Center stringer? Do I need it? I had a few holes on the backside of the transom I wanted filled. The PO drilled all kinds of holes in the backside and only used like a bath and shower type silicone to seal them, even the ones below the water line. I opened them up a little so i could...
  15. GaJeff

    Center stringer? Do I need it?

    Re: Center stringer? Do I need it? I repaired where I cut through the hull. I used PB to fill in the cuts, backed it with wax paper on the bottom side, and laid 3 layers of the 2408. I still have to sand down the bottom side but I think it turned out really good. I also tabbed in the transom...
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