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  1. J

    1980/81 Chrystler Timing Issues

    The motor is either 1980 or 81 70HP Chrystler... The problem is achiving high rpm while in gear. The motor will rev high in neutral. I bought the motor used 2 months ago from a dealer in Sanford FL and have had the same problem since the day of purchase. I have brought the motor back several...
  2. J

    Low RPM

    80/81 70HP Chrystler. Can reach high RPM when in nutral, but when in gear max is 1500. Last weekend we were running the boat at approx 18MPH (Verified by GPS.) This weekend with the same prop max speed is only 10MPH. I know the prop is the wrong size however, with no changes to the motor or...
  3. J

    Stuck Tach/Tach Wiring

    Does anyone know if a tach can be repaired if the needle is stuck? Also if anyone knows how the tach is supposed to be wired to my 80/81 70HP Chrystler please post it.
  4. J

    Schematic I need help!

    Hello Schematic and everyone else!<br /><br />You helped me out a while ago in this post about my 63' Johnson.<br /><br /> http://www.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=17;t=005321 <br /><br />That motor was just too old and I finally gave up a bought a 1980 Chrystler 70HP. I...
  5. J

    1980/81 70HP Chrystler speed issues

    Ok, got the motor up and running however I can only push my 15.5' tri-hull about 20MPH. I was doing this with my 40HP I thought the 70 would at least push me about 30-35MPH. The compression is 150, 150, and 155. The motor seems to rev higher when in neutral. I don't have a tach attached yet...
  6. J

    1980/81 Chrystler Outboard

    Does anyone have a schematic of the wiring for the guages and accessories for the 1980/81 70HP Chrystler? Is there anything special I need to do to make sure the charging system is charging the battery?
  7. J

    Coast Guard Rating Plate

    Early 70's Chrystler tri-hull has a plate that says it was placed by the coast guard. The max engine hp says 75. I want to purchase a 115hp. Two questions:<br /><br />1. Is there any physical harm that could come from me putting this motor on other than me being stupid and running the boat...
  8. J

    1973 Johnson 115HP - Need guidance

    What should I look for as far as checking it out before I buy. I'm going to purchase a compression guage to check that (please post instructions how to do so.) How much should I look to spend (right now the guy is several hundred over NADA.) I know the electronic choke is non functional. I...
  9. J

    1963 Johnson 40HP is affraid of water???

    The engine starts and runs fine until I place it in the water? The only way I can get it to run is dry. It will not start in the water, and if I start it dry and back the boat down the ramp into the water the motor stalls?<br /><br />Thanks,<br />John - Dry docked in FL :(
  10. J

    88' Johnson 48HP

    Well, while I wait patiently for the generator for my 63' Johnson to arrive, I decided to try and take a look at the motor which originally came with my boat. <br /><br />The symptoms are:<br /><br />Flywheel will make a quarter turn the lock. The flywheel always locks at the same spot and can...
  11. J

    Yet another motor issue.....

    Ok guys, You have all been incredibly helpful in the past few weeks and I want to thank you for that. Here's another one for you.<br /><br />1963 Johnson 40HP. A little hard to start I have to turn the choke on, try to start it, it will catch for 1 sec, then die. I then have to turn the...
  12. J

    Carb Questions......

    My 1963 Johnson 40HP enging can not idle at low RPM without stalling. It runs great at high RPM. I purchased the engine used and from it's appearance I doubt if any work has been done on it besides the water pump I just replace. The top of the plastic engine casing had a good deal of dried up...
  13. J

    Accessory wiring & Guages

    Now that the engine is in semi-usable condition I would like to get the running lights and guages installed. I currently have a set of 1979 Chrystler guages that came with the boat. My motor is a 1960's Johnson 40HP. Are these useable? If not can you reccomend a set that will work.<br /><br...
  14. J

    Water pump impeller question....

    I am purchasing a 1970 Johnson 40HP outboard. I was told it needs a water pump impeller. What's involved in replacing it? Could some one with no outboard repair experiance get the job done? Also is there any way for me to check the impeller before I replace it? What else should I check...
  15. J

    1970's Merc 50HP purchase question?

    I found a mid 70's Mercury 50HP motor for $600. It runs and has controls. Is this a good deal? How can I check to make sure there are no serious problems?<br /><br />Thanks. :)
  16. J

    Rebuild question

    I have a 1988 Johnson 48HP outboard that I have been told needs to be rebuilt. Is it worth getting rebuilt and what kind of expenses am I looking at? Also, can you recomend someone in the Orlando, FL area to get the job done. :confused: <br /><br />The flywheel will only make a quarter turn...
  17. J

    Older 1980's 48HP Johnson need advice...

    I just got an older 48HP Johnson. I have tried starting it with the starter as well as pull start, but the part where the pull cord goes seems to be locked? After about 15 mins of playing with the boats throttle I was able to get it to make a half turn but it locked again? As far as I know...
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