135hp Johnson 73

[OperativeK]

Hi everyone I am finally getting around to fixing my Johnson 135 its a 1973. I have a scored one piston and rings. I am also going to overhaul the carbs and put new coils on it(The coils had bad rust). <br /><br />My question is this what else should I be thinking about completing with this motor during the process? I had just rebuilt my Merc 1350 and it runs great now but I really don't know much about the electrical on this one so is there something more I should replace during the overhaul? Any advice is welcome and thanks as usual.<br /><br />Things I know Im already going to replace:<br />gaskets<br />coils<br />piston/rings<br />carb kits<br /><br />Also Im only having one cylindar bored and the rest will just be honed.<br /><br />Some pics of my progress and new motor stand:<br /> http://opk.gotdns.org/thegirlsandjohnson135hp/photos/photo6.jpg <br /><br /> http://opk.gotdns.org/thegirlsandjohnson135hp/photos/photo9.jpg <br /><br /> http://opk.gotdns.org/thegirlsandjohnson135hp/photos/photo16.jpg

 

[rickdb1boat]

Re: 135hp Johnson 73

Water Pump for sure and T-stat if questionable..

 

[emdsapmgr]

Re: 135hp Johnson 73

Suggest you obtain a set of 4 intake filler blocks, p/n 322684. Standard in the later 140's. They are NLA, but are around. These nest in the intake, by the reed boxes. Be sure to get the v-4 ones, as the v6 ones are slightly larger. Also, add a set of composite reeds. When you have the thermostat housing plate off, be sure that both of the pinholes in the plate are open. rickdb1's suggestion is right on.

 

[Dhadley]

Re: 135hp Johnson 73

You can get rid of that temp sender that was hooked to the choke. There was a bulletin years ago about that.

 

[Dhadley]

Re: 135hp Johnson 73

Keep in mind the 73 V4's were a year all by themselves. Make sure you get pistons for a 73 135. No other year will work unless someone has changed the block, crank & rods.