The 103 is really not showing any signs of heat at all, and your right, a little colour around the electrode is good. If you can look closely at the threads of the plugs, you will see a "blue'ish...
Type: Posts; User: MMGT1
The 103 is really not showing any signs of heat at all, and your right, a little colour around the electrode is good. If you can look closely at the threads of the plugs, you will see a "blue'ish...
Its hard to see the mark on them in that pic, but I think I can safely say the 103 is too cold for your engine. Install the 104's @ .045 and see if the spot reduces or if it changes at all. I would...
I have the train of thought to keep a plug as warm as you can to combat fouling and regulate heat in the heads(You need the heads to absorb this heat efficiently and not exceed what a head can...
I would like you to try your 103's gapped to 45tho, and 42tho respectively(Log both ways and see how she takes it). I have a sneaky suspicion that you are blowing out spark. Would this Regal have the...