Is anyone into Johnson/Evinrude Rotary Powered Snowmobiles?

http://www.davesomcwarehouserepair.com/

had 20 plugs in stock July 2012.........

Holy Crap $90!!!!!!

SyntheticBlinkerFluid said: *Edit- I found a picture of my Johnson

Yeah, I found a picture of my Johnson too.. But it is too big to fit on most computer screens. Even if it would fit, I wouldn't post it here.

I have 7 of them

Davie said:

I have 7 of them

Not sure if cruel April fools day joke or serious. Holy zombie thread by the way!!

Lol not a joke (248)821-3283 call or text I have 6 new, 1 used

You do realize that the search for the spark plugs occurred 8 years ago, don't you, Davie?

No, he has 7 Johnsons, and he's only used one of them....

I'm reviving this thread again because I just bought one!!!!!!!!!!

sorry not sorry.

(hunting for manuals and parts details)

Going WAAAY back to the original question....

Look into Mercury outboard plugs used in the M70-M85 3-cylinder motors from the late 80s.  They use a short reach, surface gap plug just like the one pictured.  Being a 2-stroke, it might have a bit hotter electrode, but I would venture a guess that in a Wankel, hot isn't the end of the world.

Could you not use a spark plug anti-fouler to step the plug out of the housing and then run a conventional spark plug?

How come no one has used one of these engines to make a rotary Formula  500?

fidelity101 said:

I'm reviving this thread again because I just bought one!!!!!!!!!!

pics or ban

Holy crap Zombie Thread, MY zombie thread. I still have mine in a shed at my grandmas, but I haven’t touched it in years. 

No Time said:

How come no one has used one of these engines to make a rotary Formula  500?

Because class rules only allow certain motors, not a blanket "any snowmobile two stroke" New motors are brought in when parts get difficult for old ones, so allowing this would defeat the purpose.

apparently these have unobtainium 12mm spark plugs which is the issue and I am having issues finding even a spare set. The trick is people when rebuilding these just bore em out to 14mm and run std rx7/rx8 plugs since they are surface gap as well. 

I did find someone about 2hrs north of me with 2 of these sleds and a spare engine as good donor vehicles/parts sleds. Not sure with that if I can make the death kart and keep one as an actual sled but we shall see. 

I have rally car things and truck stuff to finish first. 

In reply to Apexcarver :

It clearly wouldn’t meet class rules, and I wasn’t suggesting it for that purpose.

The question was only to suggest the potential for making a rotary powered F440/F500 chassis. 

Reviving this.. Boy what a different world we lived in when it was started.

Im also on the hunt for UP-77V plugs. I inherited my grandfathers 73 RC35 that he bought new. It hasn't run in a couple years and here I am... Same dilemma as the other OMC Rotary owners in regard to the plug... 

This thread must be the king of the Zombie threads. I lost count of gow many times it was revived. 

I knew about these, I didn't know they were rotary engines though.  Neat

In reply to joly0022 :

Very cool sled. I have two '73 rotaries, an evinrude RC35Q "Quiet" and a Johnson Phantom. They were top of the line for the time. The plugs are hard to come by as stated BUT they are also very rugged and don't foul easy. I would just take it out and clean it first. 

In reply to 96sohc :

I'm going to Zombie this thread back to life. I'm currently looking for a 45hp motor to buy, is anyone is willing to sell/ship me one? Thanks in advance! 

fidelity101 said:

I'm reviving this thread again because I just bought one!!!!!!!!!!

 

sorry not sorry.

 

(hunting for manuals and parts details)

I have parts and manuals. What parts are you looking for? Call or text (248)821-3283