Recent content by Hanr3

  1. H

    '57 Johnson 18hp gasket help.

    I'm having one heck of a time finding the part number(s) for replacement head gaskets for a '57 18hp Johnson motor, any help is greatly appreciated.
  2. H

    18hp Johnson lacks power.

    This engine has been challenging. Top speed according to my GPS is 9mph, used to be 7.3mph. What I've done so far. new points, coils, condensers, plugs, plug wire, rebuilt the carb, bought a used carb on e-bay, rebuilt it. Compression 105/95, spark from both plugs, pull one plug and the engine...
  3. H

    18hp Performance problems, still.

    History, brief. '57 Johnson 18hp, top speed on a 14' v bottom is 7.3-7.5mpg via gps. Compression is 95 top piston, 110 bottom piston. Sprak is great, I syncronized the timing to the carb per the repair manual. I rebuilt the carb, no difference. Bought a used carb, rebuilt it, now she starts...
  4. H

    spark plug wires reversed?

    I have a '57 Johnson 18hp motor. Wondering if its possible to reverse the spark plug wires, and get the motor to run? I know what it sounds like to get a couple spark plug wires crossed up on a V6 or V8, just not sure about a 2 cycle. My motor doesnt seem to run properly and I have...
  5. H

    '57 Johnson 18hp no reverse.

    I could use some help. I had reverse until I took the lower unit apart to inspect and clean it. Not sure what I did wrong, but now it won't go into reverse. I can shift it into reverse via the shift lever, however the gears don't engage. What did I do wrong?
  6. H

    '57 18hp with a hickup.

    I have a hick-up, the slower the rpm's the more pronounced it is, too slow it will kill the engine. Little background Replaced coils, condensers (.20), wires and plugs (.30). Rebuilt carb, replaced cork float with a plastic one. Was going to replace water pump, however it was in great shape...
  7. H

    '57 FD-11 18hp Johnson engine rebuild ?'s.

    Not your typical issue, at least based on the threads I've read. Little back ground. I aquired the engine last year from an extended family member. Appearantly its been in the family for a long, long time and sat for the last 5-10 years in a shed. I pretty much put gas in it and it ran a couple...
  8. H

    '57 Johnson 18hp Seahorse Start problems.

    Hello All, I found this site and had to join. Tons of great info and very knowledgeable members. Thanks for a great site! On to my problem. I aquired this engine (FD-11, 18hp Seahorse) from an in-law. It had been sitting in his shed for at least a couple of years before I aquired it. He claims...
  9. H

    How many batteries do I need?

    I have a small 14' Aluminum Deep V boat with a 18hp pull start Johnson motor. I plan to make it into a fishing boat this winter. My electrical needs are a Trolling motor, fishfinder, navigation lights, curtisey lights (leds), livewell with one pump, and a couple of 12v sockets for night...
See more
Top