90HP Johnson ????

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bigriver79

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I recently had the pleasure of receiving a 90 Johnson from my FIL. It could be junk, I dont know. He seems to think that its a 1979 model. I cant find any info that says Johnson made a v-4 90 in 1979. The hard to read model #'s indicate a 1983 model. My question simply is did they make a v-4 90 in 1979. Thanks in advance.
 
Joe Reeves

Joe Reeves

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Re: 90HP Johnson ????

Nope.... No 90hp models in 1979.

What is the hard to read model number?
 
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F_R

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Re: 90HP Johnson ????

90hp was made in 1964-65, then not again till 1981
 
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bigriver79

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Re: 90HP Johnson ????

Joe Reeves said:
Nope.... No 90hp models in 1979.

What is the hard to read model number?
Click to expand...

J90T??TE. I'm guessing 83. It's not a 90's engine.

Thanks for the replies, any input on the integity of this engine would be appreciated. It was running when parked 10 years ago but I dont know if its worth fooling with or not. I am scrapping the boat it's on and and at least keeping the trailer.
 
jimmbo

jimmbo

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Re: 90HP Johnson ????

post a pic. then we can tell you the year of the cowl decal
 
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emdsapmgr

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Re: 90HP Johnson ????

Getting the starter to turn the flywheel would be a good place to start. You need to measure the compression in each cylinder. If you have good compession (maybe 100 or higher), then it might be worthwhile to invest additional time and money in it. They were a very solid/popular engine back when it was built. You can still get most of the parts for this engine today.
 
Joe Reeves

Joe Reeves

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Re: 90HP Johnson ????

J90T??TE

Yep... I'm guessing it's a 1983 also.
 
metriccrescentwrench

metriccrescentwrench

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2,598
Re: 90HP Johnson ????

Heck yes, that's be a perfectly good engine if you can get it running. I've got an '81 90 and it runs great.

Somewhere in the "top secret files" is information on bringing an outboard engine back to life that's been sitting for a long time. As far as turning it over and attempting to check compression (you may have thought of this already), I'd get some oil into the cylinders before attempting to rotate the crank. I'd even consider pulling the carbs (they'll probably need a rebuild anyway) and reed blocks so you can spray some oil on the bearings - maybe the real experts around here will have something to say about that.
 
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