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  1. J

    To rejet my 120 or not????

    My 1989 120 looper runs rough from 800 to about 1300rpm. It previously had run bad to 1900 but a link and sync isolated the problem to the rpm listed above.It will idle 650 all day long but is a little rough. (rich)<br /><br />Is it common to have to rejet the idle air bleeds and/or the...
  2. J

    1989 120 Looper stalls at part throttle

    I just got back from running this. Or at least trying to. When running in water if I put it in gear and bring the thottle up to part throttle or just into the intermediate jet it runs for about 30 seconds and then dies like it runs out of fuel. I just took apart the 4 carbs and flushed the...
  3. J

    89 120 looper overboard indicator

    I just got my 120 running and was wondering that the overboard indicator on this motor just lets the water run out. Is there an orfice to restrict it or does it just run out. It has the aspirator just wondering?
  4. J

    60 or 90 v6 for new to me aquasport

    I am aquiring a 1980 200 ccp aquasport and am going to redo and repower it. 20 degree deep v,20 foot center console. I am replacing the transom before the repower. 200 max hp on the hull 25inch motor <br /><br />I was looking a a mid 90s evinrude or johnson.<br />I was wondering if I would be...
  5. J

    New motor need prop starting point

    I have a 1973 19-6 Aquasport and have removed the 83 150 crossflow in favor for a 1989 120 v4 looper. I had a 17 pitch viper on the crossflow and it ran 5400 rpm wot at 44 mph It never was able to get to 5800 <br /><br />I need a starting point for the 120 as it is now a 2.00 to 1 gearcase and...
  6. J

    New motor need prop starting point

    I have a 1973 19-6 Aquasport and have removed the 83 150 crossflow in favor for a 1989 120 v4 looper. I had a 17 pitch viper on the crossflow and it ran 5400 rpm wot at 44 mph It never was able to get to 5800 <br /><br />I need a starting point for the 120 as it is now a 2.00 to 1 gearcase and...
  7. J

    1989 120 linl sync

    Just a note to anyone trying to link one of these. I was going over my new (to me) motor and I could not get the roller to touch the throttle cam. When I got better light I saw that someone had replaced the screw and it was too long and was touching the block not allowing the roller to touch the...
  8. J

    89 120 jtl120cem control valve, aspirator+ vro few questions

    I just got my motor and started to work on it. I am changing all the hoses and clamps. They all look old and dry. My question is that the control valve is disconnected and there is no aspirator just the hose pointing outside the block. Should I get all the parts and hook this all back up?<br...
  9. J

    91 looper 120

    Well, I fixed my rpm problem on my 83 crossflow 150 by replacing it with a 91 120 looper. :D <br /><br />What rpm should I shoot for with this engine? <br /><br />What kind of performance should I look for on a 1973 aquasport 19-6?<br /><br />Any problems that should be checked before taking...
  10. J

    looper vs crossflow

    I have a 19-6 aquasport and was thinking of repowering from a mid 80s crossflow 150 to a 91 120 looper <br /><br />What would be difference be in performance of the two engines. The looper is a v4 and weighs less will that offset the 30hp loss. Does that even matter cause the v4 is a looper
  11. J

    78 150 drive shaft

    Took my lower unit off to work on and my driveshaft splines that go into powerhead are worn. Not bad but worn. What are the options to fix this? <br /><br /><br />I am currently looking for a used shaft and the crankshaft does not look bad but will check with the new shaft. <br /><br />Is this...
  12. J

    Water pump choice? Johnson 150

    What if any is the difference in standard water pump and the chrome pump kit? Besides about 45 bucks. Is there any benifit to running this pump?
  13. J

    v6 crossflow heads

    Is there any difference in heads from the v6 crossflow motors? Are there good heads and bad ones? Do the chambers have different sizes and how do they effect compression and power? Does the 2.6 motor use the same head as the 2.5 motor?<br />I am just wondering :confused:
  14. J

    two batteries damage a rectifier?

    Can running two batteries ruin the rectifier? I accidentially ran my motor on both batteries one is a starting one a deep cycle. After that the motor does not charge but tach works. It only acts up when at high speed. Motor is a 78 150 johnson. I am going to check the rectifier but would like to...
  15. J

    Any benefit to using newer electronics

    I have a 78 150 crossflow and was wondering if there was any benefit to using newer electronics. I have a complete set of electronics from an 89 motor. I know the 89 stuff is one power pack but are there any real benefits to the newer stuff or would it just be a waste of time. My motor runs fine...
  16. J

    Identity Please

    Old johnson sea king <br /><br />74GG9012 Model<br />141345 Serial<br /><br />If anyone knows approx value?
  17. J

    crossflow 1 1/4 carbs cracked tube

    The emulsion tube for the main jet on one of the carbs I have is cracked from the bottem to the top straight up. Will this cause a problem and if so is the carb body trash or can it be changed
  18. J

    Any advice on stopping the drool when tilted

    83 150 crossflow when tilted it drools premix out of the silencer. I know this is a common problem but I can't stop it. I tried new gaskets and even replaced the silencer cause the original one looked warped. It still leaks :mad: I don't think in 83 when these were new that this happened.I...
  19. J

    92 looper 150 overheating?

    What is the normal operating temp for this motor. It runs at 160 idling but climbs to 180 under full throttle. Customer states this has never happened before. Thermostats are new and runs 5700 rpm at wot. I am doing a water pump and inlet screens on it friday. Pump is 2 seasons old. No water...
  20. J

    stupid mistake on carb rebuild johnson 150

    I rebuilt my crossflow 150 carbs cause lower one had a bad needle and seat. Just wanted to say factory kits have no equal they are the best! <br /><br />So I get all done and fire it up idles great on the muffs. Take her out and Idles great on the water. Get out of no wake zone and throttle up...
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