flying low's motor!

[rreinicherr]

I seen, what looked like aluminum specs on my plug, when I just changed them. I am trying the Denso Iridium plugs.

I will take a look tomorrow with my bore scope. I forgot I bought one for my boat racing motor. I can't even keep track of what tools I have.

THANKS!

 

[msdnga]

The damage was already there, when I increased the power with a very safe 20 degrees timing, there was no lean spots. 11.3 AFR across the curve. My inlet temps where only 110 degrees. The piston did fail from detonation, but not from that days work.