Search results

  1. H

    No spark

    I got my 50hp. 1985 4cyl. engine together today, I had jumper wires to ground the plug wires so I could see how the starter was working. I cranked the engine and it was ok, when I got back to the engine I saw the jumper wires had come off the no.1 and no.2 plug wires, there is no...
  2. H

    Crankshaft end play

    On my 1985 50hp. Mercury 4cyl. overhaul I have a .005 shim on both upper and lower end caps and .009 crankshaft endplay. Should I replace the .005 shim on the lower end cap with a .002 or a.003 shim, to have less crank endplay, or would that be to much difference between the upper and...
  3. H

    Id 80hp. Mercury

    My brother-in -law gave me a 80hp. blue band Mercury. He don`t know the year or when and how well it ran. Can anyone help with the year and is there any history of problems with these engines? THANK YOU .........HAS
  4. H

    Sign in

    I sign on page one, when I click on submit new thread, it says I`m not signed in.WHY DOES THIS HAPPEN?
  5. H

    UPDATE ON 50hp. MERCURY OVERHAUL

    I want to say THANK YOU TO EVERYONE FOR ALL THE HELP I RECEIVED, I would heve been lost without it. I bought the lower bearing cap from Twin City Outboard in Minnesota, the service is good. The powerhead is aimost back together again. I bet I hold the record for most mistakes on an...
  6. H

    Help

    I have been tring to say thank you to the men on this forum for 4 days, every time I hit submit new thread a page comes up and said that I`m not signed in ..................HAS
  7. H

    Update opn 50hp. Mercury overhaul

    Iwant to say THANK YOU TO FAZTBULLET, CHARLIEB, CHRIS1956 and all the others for all help I received, I would have been lost without it. I received the lower bearing cap Charistmas
  8. H

    A chesapeake or a potomac??

    This is my first time on the Lone Star forum, so hello to everyone, it is also the first time I will try to post pictures. I bought this boat in 1967 and had to sell it in 1970,I don`t remember if it was a CHESAPEAKE or a POTOMAC both names are familiar, it was a 18ft. runabout...
  9. H

    Lower bearing cap 1985 50hp. 4cyl.

    I would like to replace the lower bearing cap on my engine, its been welded and has scratches on the round sides that go up in the block. So far I have 5 number changes for this part . Are these just part number changes, or are they number changes when a design modification has...
  10. H

    Main bearing clearance--and piston clearance are they ok ?

    I have more questions about my 1985 50HP. 4CYL.Mercury engine. What is the clearance between the reed type main bearings and crankshaft?. The ridges on the crank are very small, when I rub a finger on the crank I can`t feel them, I can feel them when I rub them with a fingernail. I cut...
  11. H

    Connecting rods

    I have been unable to find the pictures I took when I disassembled my 1985 50hp. 4cyl. engine and its been long enough that I don`t trust my memory. The connecting rods have a grove on one side at the rod and cap parting line and I don`t remember if the rods were installed with the...
  12. H

    2-cycle oil

    I`ve used Quicksilver synthetic blend 2 cycle oil in my 1985, 50hp. 4cyl. Mercury with no problems sincs I got the boat in April 2009 I knew then the cylinders, pistons & rings were in bad shape, I now have it apart for overhaul. Last week I seen Pennzoil premium plus...
  13. H

    Reassembleing engine

    I have some questions about reassembling my 1985 50hp. 4cyl. mercury engine. Should Loctite be used on the bolts?, if so what type?. What about some kind of sealer?. Or should the bolts be clean and dry?. Should bolts be retorqued after engine is run at operating temperature...
  14. H

    Water in 3 cylinders

    MY 1985 5Ohp. 4cyl. Mercury stopped running after running more then an hour at about 1500rpm. I tried to start it when I got home, it ran very bad for about 10 seconds, after that it would not start. I removed the spark plugs, #1 plug looked ok, #2,3,and4 are clean as new. I replaced...
  15. H

    Test wheel

    Anyone have the test wheel part number for a 1985 Mercury 50hp. engine with a 13 tooth spline prop. shaft?.........THANK YOU.............HAS
  16. H

    Carburetor air filter

    My engine is a 1985 Mercury 50hp. 4cyl. with 2 carburetors. Are there factory or after market carburetor air filters for this engine? I don't like to run any engine without an air filter on the carburetor but it seems like a lot of outboards don't use them. THANKS AGAIN .......HAS
  17. H

    Ethanol

    Anyone know when the plastic 6gal. fuel tanks were approved for ethanol fuel? one of mine is dated 1998 and I will replace it if not safe for ethanol fuel. No one I talked to can say for sure when then they were approved..........THANKS..........HAS
  18. H

    Dumb questions

    Its hard to believe people in this forum with experience in what i`m asking wont answer my questions. i`m only asking so i do it right the first time and dont make any costly mistakes. maybe they are dumb questions to some people, not to me.....HAS
  19. H

    2nd opinions

    I would like to get some opinions about overhauling my 1985 4cyl. 50hp. mercury. Is it better to get an overhaul kit, who sells the best one, or buy individual parts? I notice a lot of the pistons in the kits and pistons sold seperately are 2 ring pistons , the pistons in my engine have 3...
  20. H

    lower crankshaft seals

    1985 50hp.4cyl. 2carb. when I got this engine in 09 the compression was 130, 130,125 and 100 on no.4, I replaced the lower crank seals then, now the compression on no. 4 is down to 85. Are the seals damaged by the exhaust heat and pressure combined with the water? If so is there a way to keep...
Top