never buying another Johnson


Stupid motor only lasted 25 yrs. /sarc

Is piston supposed to look like this?

Appears to have eaten a ring. Inside of head looks like tip of piston.

Old girl ran like a top for a long time. Never failed to get me home. Not one time.

Guess it's time to start researching repower options.


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17' Henry O Hornet w/ Johnson 88 spl
26' Palmer Scott project hull
14' Bentz-Craft w/ Yamaha 25
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Beats having a black motor! Love my E tec, 8 years now not a birp!
Little hone job / used piston / set of rings and you in business...(sarc)

Find a engine made today that runs for 25 years without costing you an arm and a leg.


The ENTER-NET Fisherman
Little hone job / used piston / set of rings and you in business...(sarc)

Find a engine made today that runs for 25 years without costing you an arm and a leg.


The ENTER-NET FishermanOriginally posted by mdaddy


You joke. But, I enjoy playing with these things. HenryO hull will definitely get new power. Love that hull.

The old Johnson 2moker may get played with just for fun. Never tried to do a piston and rings.

Questions about a replacement piston. I see Sierra piston kits for about $100 (piston, rings, wrist pin, and clips). Maybe could find a used donor. Is it possible to remove carbs and reed valve assembly and get at the front of the connecting rod bearing? If so, I may try a hone and new piston. Cylinder is scored some. But , I've broken down motors that looked nearly as bad and went back together and ran a long time. Held 50 psi like she was, if a little work got her 90 or better..... Would never sell without disclosing full history. Shoot, history is literally on the internet

And, I have a 14' Bentz with the same transom bolt pattern. And, I've seen several 14s carrying old Merc and OMC 90s. Could be fun.


Hey, hold my beer.... Watch this.....bigsmile

Will have to see if I can break any time free to play.


---------------------------
17' Henry O Hornet w/ Johnson 88 spl
26' Palmer Scott project hull
14' Bentz-Craft w/ Yamaha 25
Little hone job / used piston / set of rings and you in business...(sarc)

Find a engine made today that runs for 25 years without costing you an arm and a leg.


The ENTER-NET FishermanOriginally posted by mdaddy


You joke. But, I enjoy playing with these things. HenryO hull will definitely get new power. Love that hull.

The old Johnson 2moker may get played with just for fun. Never tried to do a piston and rings.

Questions about a replacement piston. I see Sierra piston kits for about $100 (piston, rings, wrist pin, and clips). Maybe could find a used donor. Is it possible to remove carbs and reed valve assembly and get at the front of the connecting rod bearing? If so, I may try a hone and new piston. Cylinder is scored some. But , I've broken down motors that looked nearly as bad and went back together and ran a long time. Held 50 psi like she was, if a little work got her 90 or better..... Would never sell without disclosing full history. Shoot, history is literally on the internet

And, I have a 14' Bentz with the same transom bolt pattern. And, I've seen several 14s carrying old Merc and OMC 90s. Could be fun.


Hey, hold my beer.... Watch this.....bigsmile

Will have to see if I can break any time free to play.


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17' Henry O Hornet w/ Johnson 88 spl
26' Palmer Scott project hull
14' Bentz-Craft w/ Yamaha 25Originally posted by PalmerScott


I enjoy your posts.

I believe you can separate the crankcase from the block( if you are a wrench freak), but , it could/would be a waste of time. I've never done it...seen it done ...and there's this:
https://forums.iboats.com/forum/engine-repair-and-maintenance/mercury-mariner-outboards/341319-replacing-johnson-outboard-piston


The problem is the more 25 year old bolts you remove...the more chance of breaking them. Depends on what you want when you get done and what the rest of the motor is like. I had an 88...that was a running junk pile...and I sold it... ran forever. I got into boating by buying other peoples junked motors and trying to fix them.

2 strokes may not be efficient...but...they very seldom quit on you. Not much that can go wrong...KISS principle. Personally, I get all the goody out of something before it goes to scrap.

I'll be watching for your progress. Post some pics and let us know what you do.




The ENTER-NET Fisherman
“Beats having a black motor”. “Got 8-years on my etec”. Eight whole years? I got underwear older than that! 23-years on my 30 hp tiller Merc with no issues. Poor mouthing abounds but my Seasoned personal experience tells me otherwise.
If I could post pictures I would post one of the 7 v6 Mercs that have holes in the block hanging on stands behind my barn. Altho I have a running 2.4 200 84 model that still runs great
Go to any old country area or mountain area where money is an issue every motor around is a old smoker. I had a Johnson 70 that was bored to a 90 by a airplane mechanic and his buddy who was a machinest. Two strokes are great.
Well.... She's done.
Carbs came off easily as they got cleaned every few years. Reed assembly came off easily = surprise! Reeds looked great. Outer crankcase bolts came easily = more surprised. 4 of the 6 Allen head crankcase bolts came out clean = (beginning to hope I have something to play with)...... Then, the two lower Allen head bolts seized hard. Could pull the power head and put some heat on them.... But, that's more than I'm willing to put in to her. Parting her out. Everything worked except that the new cylinder. Anyone need parts for a mid 90s OMC/Bombardier?


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17' Henry O Hornet w/ Johnson 88 spl
26' Palmer Scott project hull
14' Bentz-Craft w/ Yamaha 25
Sorry to hear the motor has reached the end of it’s useful life for you. What horsepower is it?
1995 Johnson 88spl. No VRO. Does have trim/tilt. The 88 special is literally a 90 with slightly lower amperage output (6 amps instead of 9, I think).


---------------------------
17' Henry O Hornet w/ Johnson 88 spl
26' Palmer Scott project hull
14' Bentz-Craft w/ Yamaha 25
 

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