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  1. M

    71 Merc 800 reed blocks

    In the process of rebuilding this motor (thread here http://forums.iboats.com/mercury-mariner-outboards/1971-merc-800-rebuild-refurbish-589826.html) and have acquired a couple replacement reed blocks (thanks to the kindness of a fellow iboater) but they are slightly different than the originals...
  2. M

    Opinions on Dodge Nitro ?

    Looking to replace an older Montana van with something newer and capable of pulling up to 5000Ib. The Nitro is currently on the short list. Wondering if anyone has experience or opinions on this vehicle.
  3. M

    Piston and wrist pin replacements - Merc 800

    Hoping to get some clarification on replacement pistons and wrist pins. Have been working on refurbishing a 1971 Merc 800. Have been researching replacement pistons for this motor. Merc has SOOOOO many different part numbers for the same piston that I'm not sure what I should/could be looking...
  4. M

    We're Penniless here in Canada

    No, we're not broke, we've just officially done away with the penny as of today. Pennies are no longer being distributed as currency. Instead, merchants will "round up or round down" the price to the nearest nickel. Guess which way most will "round" off the prices to. The penny is still...
  5. M

    Replacing bleed lines on 71 Merc 800

    As part of a rebuild process I will be replacing the bleed lines (if that term is correct) that run between/from/to different parts of the block. I believe they re-circulate lubricant to the main crankshaft bearings. Can I use clear fuel line to replace the original black lines? The original...
  6. M

    1971 Merc 800 rebuild / refurbish

    A bit of background info first. Have begun the task of refurbishing my 1971 Merc 800 motor. Problem began with cronic poor idle performance and stalling when put into gear. I also found signs of water intrusion on #4 cyl - rusted plug and steam cleaned piston head. After pulling the powerhead...
  7. M

    '71 Merc 800 "center main" bearing question

    Powerhead is taken apart and I'm in the process of checking all bearings. The center main bearing race "appears" to be cracked in half. Is this normal? The two halves fit together perfectly BUT the separation joints are not square/straight as I would have expected. It appears as thought a...
  8. M

    Ice rescue here today - some people just don't get it.

    Happens every year despite the repeated warnings by media and emergency responders to stay off the ice. Winter has been quite warm so far and ice has formed only in some locations to about 4". Most of the main lake is wide open still. The last few days have been above freezing and today the...
  9. M

    OK, how do you get the bearing off the shaft?

    Working on a '71 Merc 800, doing the crankshaft seals and both upper and lower bearings. Lower bearing was completely shot and the outer race and balls just fell off when I pulled the end cap off. Can't get a puller between the inner race and crankshaft jounal. Upper bearing was not in much...
  10. M

    Pulling the crankshaft '71 Merc 800

    Part of my winter maintenance this year is to replace the crankshaft seals and both upper and lower crank bearings. Wondering if it's possible to remove the crankshaft while leaving the pistons/rods in the cylinders. Can I raise the crank and pistons enough to remove the rod caps and pull the...
  11. M

    Crankshaft repair sleeve for lower seals 71 Merc 800 (confused)

    Have read quite a bit about these repair sleeves and found a few sources for them. There seems to be two different kinds available from what I can figure out. Not sure which to use. The Merc service bulletin that has been referred to on these forums says to use an A-86349A1. But I have also...
  12. M

    Major quake off Prince Rupert BC - Tsunami warnings out for west coarst and Alaska

    Keep your heads up and stay safe http://www.google.org/publicalerts/alert?aid=e03a6e895721fff1&hl=en&gl=CA&source=web
  13. M

    Possibly saved a life today - PHOTOS ADDED

    A friend invited myself and my wife out sailing today for what would be our first time in a sailboat. Afternoon started out great with a fairly strong NE wind and 2-3ft waves. We were having fun tacking back and forth up the lake pretty much by ourselves enjoying the sun and stiff breeze...
  14. M

    71 Merc 800 - Check out this bearing, what's left of it.

    Project started out just changing the lower crankcase seals because I was getting water into the #4 cyl. After removing the powerhead I proceeded to pull the lower cap and this is what I found, just as you see it. There are at least 5 balls missing from the bearing and the ball cage is all...
  15. M

    Looking for source of lower crankshaft wear sleeve

    From info on these forums I've read that Merc had a wear sleeve available to install over the lower crankshaft to repair worn and corroded seal surfaces. The p/n I've got is A-86349A1 for a 1971 80hp. I've checked with a local Merc dealer and they were virtually clueless. Went and spoke with a...
  16. M

    Lower Crank Seal Orientations - 71 Merc 800

    Manual states to install both seals with lip toward the outside of the cylinder block. That is how the original seals are installed. Have read elsewhere on there forums to install the inner seal in one orientation and the outer seal in the opposite orientation. I'm tending to think that Merc...
  17. M

    Dwell Tach question.

    Going thru an old box recently I came across a piece of test equipment I had bought some25-30 years ago. Had forgotten I still had it and now am wondering if I can use it as a "shop tach" to verify the RPM of my 1971 Merc 800 4 cyl outboard. It has a distributor but no points. It uses the CD...
  18. M

    1971 Merc 800 stalls when put into gear - UPDATE 7/27

    Have had this motor going on 4 seasons now and have struggled with this issue since I got it. I've managed to "get by" with it by goosing the throttle as it goes into gear but I can not confidently shift gears while docking etc., without it stalling at the worst times. I'm not prepared to put...
  19. M

    Motor Cowling Seal Discolored - 88 Johnson 4hp

    Bought this little motor last month and have been cleaning it up and getting it ready to go. The white rubber seal around the motor cowling is mottled/stained with what looks like mildew. Have tried Spray 9 and bleach with no luck trying to clean it up. Any suggestions ?
  20. M

    1988 Johnson 4hp Deluxe - suddenly no spark (Update)

    Have been working on this new-to-me motor hoping to be able to use it as a trolling motor. Replaced water pump impeller, changed LU oil, replaced ignition sensor module under flywheel that was physically broken. I also repaired the kill switch wire that runs from the tiller handle to the...
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