1955 Lightwin Which Spark Plug

[MarvK]

I have a 1955 Lightwin model 3014 that I brought back to life this season. Love it!

I remember a couple of months ago running across a post about which spark plug to use in it, A J4C or J6C? I seem to recall one was better for trolling, and one better for running higher RPM's. I can't for the life of me find that thread.

Which one is the higher heat range, and why run that one for either situation. My lake being so weedy, I prefer to drift fish over trolling and getting so frusterated.

Thanks,
Marv

 

[Chinewalker]

Re: 1955 Lightwin Which Spark Plug

The J4C is the generally recommended plug. The J6C has been recommended for motors that see a lot of trolling time, as it fouls less easily (hotter plug). Personally, I interchange the J4C and J6C on many of my 1950s Johnrudes with no issues either way. Just depends on what I have onhand when I'm working on a given motor... With a properly set-up motor running good ignition components and a rebuilt carb, I don't recall the last time I fouled plugs in any engine I run on a regular basis.

 

[kfa4303]

Re: 1955 Lightwin Which Spark Plug

+1. Champion J4C, or J6C which burns a little hotter and is handy if you do lots of low speed trolling.

 

[MarvK]

Re: 1955 Lightwin Which Spark Plug

Thanks Guys,

I'm about to help a friend wake up his 1965 Lightwin after several years of not running. I wanted to make sure we got the correct ones.

Marv

 

[kfa4303]

Re: 1955 Lightwin Which Spark Plug

In that case, this link may help. You can get any routine bots and pieces like carb kits, impellers, waterpumps, etc... right here at iboats. Holler if you get stuck.

3 HP Evinrude Johnson Outboard Tune-Up Procedure 1952-1967