Looking for the best spark plug

[bigvic]

I have a 1981 Johnson 35hp and i'm looking for the best spark plug available for my motor, can anyone help me out? Thanks

 

[F_R]

Re: Looking for the best spark plug

Champion L77JC4. Or QL77JC4. "Q" simply means it has an inductive radio suppressor built in.

 

[5150abf]

Re: Looking for the best spark plug

You want to use the plugs designed for the engine, the ones F R mentioned.

The super quad 4 electrode plugs are for 4 stroke engines and I really doubt you would see any difference or it would run worse.

 

[Vic.S]

Re: Looking for the best spark plug

As F_R says.
Currently recommended gap is 0.030"

 

[smith009]

Re: Looking for the best spark plug

It is very helpful and interesting post for every one who want to know their best spark plug. Every one can share their thought ans experience about it, thanks for sharing such kind of post. There are lots of brand available for best spark plug, you can visit nearest show room they can help you out.

 

[Vic.S]

Re: Looking for the best spark plug

There are lots of brand available for best spark plug, you can visit nearest show room they can help you out.

Remember that ( apart from few modern re-badged engines) Champion plugs are the only ones recommended for Johnsons and Evinrudes .

Be aware that resistor plugs are not suitable for OMC CD ignition systems. A fact often not appreciated in showrooms or reflected in equivalent or applications lists for other brands of plug. If suppressed plugs are required they must be inductively suppressed ones. ... The Champion "Q" series plugs are specifically aimed at this use.
The inductively suppressed plugs are also recommended for engines with VRO/OMS.

A question here will always lead you to the latest recommendations.