From what I learned on the Four Seconds Flat web page about spark plug reading, we would need a better photo of the side of the spark plug so we can see the color change on the threads of the plug. There should be a color change on the first 3 or 4 threads starting at the end of the plug. From what I can see you only have a color change on the first thread.
http://www.4secondsflat.com/Spark_plug_reading.html Thanks for your answer! I have not any better photos now but thats the case, its not even a color change on the first thread, its slightly in front of the first thread so its to cold for sure and not hot enough to hold the plug clean. I also think the non projected tip is not good for this engine
