Zberry1985
Cadet
- Joined
- Apr 20, 2020
- Messages
- 12
Can i use the parts from a 1982 motor (bearing end cap, trigger, stator and flywheel) on a 1973 motor? should i also use the 1982 switch box and coils?
full story-
I picked up a beautiful monark 1542 mod v boat with a 1973 mercury 402 motor, SN 3727106, both manual and electric start. the motor had a mouse nest in it and all the wires were chewed off or super brittle and falling apart. no problems replacing wires but the stator wires are incorporated into the housing and no way to replace them, so a new stator is needed. I can find them for $100 used or $200+ new. while looking at the new ones i noticed that they cover multiple years and motor models. also while looking for used a stator i found a 1982 40hp motor SN 6053095 with a bad block for cheap. seeing that the aftermarket stator would replace both the 1973 and the 1982 version i figure the 1982 version would also work on the 1973 version. so i picked up the 1982 motor with the bonus of other extra parts if needed.
turns out there are a few differences between the two, i'll try to lay them out best i can. on the 1973 model the stator coils are encased in plastic and make a complete ring, magnets are also around the entire inside of the fly wheel. on the 1982 model the stator is like a horseshoe and has 2 coils on one side and 3 coils on the other side. the flywheel also has just 2 magnets on the inside. also the trigger coils are different 1973 has a spring and pin to complete the loop, the 1982 is a solid ring.
well not being one to give up i decided to try it anyway except i was quickly stopped by the fact that the bearing end cap that holds the trigger and stator are not the same. so i can't just bolt the 1982 stator on the 1973 motor cause the bolt holes don't line up. but i noticed the bearing end cap bolt holes are the same so i put the 82 end cap onto the 73 motor. fit good and satisfied on a possible solution that is where i stopped for the day.
so going forward the plan is to use the 1982 bearing end cap, trigger, stator and flywheel on the 1973 motor. think it will work? should i also use the 1982 switch box and cylinder coils?
extra- I want to note that a service manual i have shows the 1973 motor as a type II ignition with points. imagine my surprise when i pulled the fly wheel off and there's no points. so not sure if the service manual is wrong or if this motor was tinkered with before, possibly electric start was added and stator was changed then? not sure.
full story-
I picked up a beautiful monark 1542 mod v boat with a 1973 mercury 402 motor, SN 3727106, both manual and electric start. the motor had a mouse nest in it and all the wires were chewed off or super brittle and falling apart. no problems replacing wires but the stator wires are incorporated into the housing and no way to replace them, so a new stator is needed. I can find them for $100 used or $200+ new. while looking at the new ones i noticed that they cover multiple years and motor models. also while looking for used a stator i found a 1982 40hp motor SN 6053095 with a bad block for cheap. seeing that the aftermarket stator would replace both the 1973 and the 1982 version i figure the 1982 version would also work on the 1973 version. so i picked up the 1982 motor with the bonus of other extra parts if needed.
turns out there are a few differences between the two, i'll try to lay them out best i can. on the 1973 model the stator coils are encased in plastic and make a complete ring, magnets are also around the entire inside of the fly wheel. on the 1982 model the stator is like a horseshoe and has 2 coils on one side and 3 coils on the other side. the flywheel also has just 2 magnets on the inside. also the trigger coils are different 1973 has a spring and pin to complete the loop, the 1982 is a solid ring.
well not being one to give up i decided to try it anyway except i was quickly stopped by the fact that the bearing end cap that holds the trigger and stator are not the same. so i can't just bolt the 1982 stator on the 1973 motor cause the bolt holes don't line up. but i noticed the bearing end cap bolt holes are the same so i put the 82 end cap onto the 73 motor. fit good and satisfied on a possible solution that is where i stopped for the day.
so going forward the plan is to use the 1982 bearing end cap, trigger, stator and flywheel on the 1973 motor. think it will work? should i also use the 1982 switch box and cylinder coils?
extra- I want to note that a service manual i have shows the 1973 motor as a type II ignition with points. imagine my surprise when i pulled the fly wheel off and there's no points. so not sure if the service manual is wrong or if this motor was tinkered with before, possibly electric start was added and stator was changed then? not sure.
