Mercury 100-125 elpto parts interchange

[bwguardian]

I recently bought two outboards to get back on the water. The first one is a 1999 Mercury 115 and the second one is a 1994 Mariner Tracker 115. Both of these are fresh water motors and in good condition physically. The Mercury has a dead hole in cylinder number 4 and the Mariner is supposed to have good compression on all cylinders...I will know shortly. I want to swap the power heads to get back on the water and noticed the ignition parts are some what different. I would like to leave the flywheel, stator, etc. intact on the Mariner and put it on the Mercury mid section with all the ignition parts from the Mercury. I noticed today that the Mariner has a black stator and the Mercury has a red stator and wondering if they are compatible. I can pull the flywheels and change those over to as I will have to any way given the overall goal will be to rebuild the power head off the Mercury but I would like to get up and running with minimal work to change everything over. So will the Mariner flywheel, stator, and trigger assembly work with the coil packs (CDI units) etc. on the Mercury?

I will also be looking for torque specs on the power plant relative to the internals...

 

[bwguardian]

Okay, figured out it would be best to just pull the flywheel and swap all the electronics over. Still looking for torque specs...especially for the flywheel.

 

[mebe007]

I can get you the spec this evening. I have the manual sitting on my desk, unless someone else chimes in first

 

[mebe007]

Specs from manual 90-830234R04 may 2003

Flywheel nut torque 120lb/ft (163nm)
Stator screw torque 60lb/in(7nm)

Powerhead to drive shaft housing torque 45lb/ft (61nm)

 

[bwguardian]

Thanks 007, I was able to swap all the ignition systems over today...purdy straight forward. The only thing I noticed was the '94 block did not have the extra lower bolt hole for the CDM plate. Not a big deal as I plan on rebuilding the '99 block and switching everything back over. I will pull the power heads tomorrow and hopefully crack the case on the '99 and see what we have...#4 is at 0 lbs. compression and the rest are 120 lbs.

 

[bwguardian]

The '99 had a bad piston. It appears the ring set pin on the piston went south but I need to look closer today. Half the top ring was gone and scoring on one side of the piston and cylinder wall...as well as the bottom and/or top of the bore where the spark plug comes through. Overall, a very very clean fresh water motor so now need to decide which direction to go with rebuild.

Also took starter apart and cleaned and lubed up. I will reinstall on the '94 and see what compression is...