1978 115 compatibility with 1985 115

[wavrider]

I have an opportunity to pick up another Johnson 115 but it is a 1985, the one I have now is an 1978.
How compatible are the parts as far as interchange ability, lu, starters, carbs electronics etc etc.
Thanks for the replies,WAV

 

[HighTrim]

Re: 1978 115 compatibility with 1985 115

To determine specific part compatibility, simply go the the BRP web page and cross reference part numbers with each other, or go to ishopmarine for the superseded numbers.

 

[ezeke]

Re: 1978 115 compatibility with 1985 115

I would do that just to pick up the more modern carburetors and get rid of the choke plates. If the primer is good, so much the better.

The whole system was set up for alcohol by 1985, so even the hoses are better than what came with your original engine.

 

[emdsapmgr]

Re: 1978 115 compatibility with 1985 115

The 85 shares a lot of common parts with the 78 model. Enough that a cheap price would make it worthwhile. The 85 115 engine has some internal upgrades and will make considerably more hp. It has the high performance bubble back exhaust, intake filler blocks and the large carbs. (Taken directly from it's 140 hp predecessor.) The 78 is crankshaft hp rated, whereas the 85 should be propshaft rated.

 

[wavrider]

Re: 1978 115 compatibility with 1985 115

Thanks for the advice. If it works out I will pick the engine up.