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  1981 Johnson 35 Restrictor Plate Removal; Carburetor Change

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Author Topic:   1981 Johnson 35 Restrictor Plate Removal; Carburetor Change
skred posted 10-10-2013 11:14 AM ET (US)   Profile for skred   Send Email to skred  
Does my 1981 Johnson 35 2 cylinder simply have a carburetor or restrictor plate setup that could be changed to increase the horsepower?
OMCrobert posted 10-10-2013 11:24 AM ET (US)     Profile for OMCrobert  Send Email to OMCrobert     
That is the max HP for that block. 35hp out of 31.8 cubic inches is great. They built a 20hp, 25hp, 30hp and 35hp on that engine block.

skred posted 10-10-2013 12:15 PM ET (US)     Profile for skred  Send Email to skred     
Thanks for the info. I suspected that. It seems to an excellent choice at about 120 lbs on my Sport 13, Since the 40 is a heavier model, the weight difference would seem to make the performance almost equal, but with the economy being better on the 35...
OMCrobert posted 10-10-2013 12:25 PM ET (US)     Profile for OMCrobert  Send Email to OMCrobert     
If you are handy and have free time, I am sure you can squeeze more speed and power out of it but it is indepth.

Propping and set up are 90% of the battle. I just upgraded to SS prop for my 30hp and it is great.

Great reading.

LakeArrowEd posted 04-05-2014 10:51 PM ET (US)     Profile for LakeArrowEd    
These are great little motors. I have a 1983 Johnson 35 ELCTS on the back of my '77 13'4 center steering sport and it scoots. I was thinking about repowering because I'm currently customizing the hull into a Super Sport with a right hand steering console and had some weight concerns but the heck with that. I'll reprop this little motor if it needs it and be on my merry way.

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