H2RTuner wrote:
Oh, yes, that spark plug, 18mm (if I remember correctly, as it has been literally decades since I have seen the original plug for my Toad-ary), tapered seat. What I did was to fabricate an aluminum spark plug adapter that has the correct threads inside and out, so it threads into the rotary housing, and holds a 3/4 inch reach regular NGK spark plug, nothing special.
The heat range is cold, down around a 9 to 9.5 NGK range. Although the ignition is a point triggered CDI, keep the plug gap down, .025 is just fine. DO NOT USE A PROJECTED TIP TYPE SPARK PLUG.
IF the thing keeps fouling spark plugs, fix the carb, float level (actual liquid fuel level in the carb bowl), jetting, and/or power port setting.
thanks for info again I will be setting carby and power port , before I even start them as thats the way I do things , I was getting plug adaptors from Jess at R/R , so I can use normal plugs , what heat range are you using ?, urs Al