Ok I bought new set of NGK's and after I hit 10lbs of boost the motor stated to miss. I went back to the GARGE and pulled the plugs and the centers are loosed from the threaded shaft. WHAT would cause this on a new set of plugs gapped at 35

 

Too much horsepower..........

 

Detonation. It breaks more than plugs

 

I really doubt it's detonation, cause I have way enough fuel from the Rc1000'cc with an AFR of 10.9 at WOT and 12.6-13.1 narrow throttle and the good ol 14.5 at idle and this is on 110oct cam2 fuel. I put a new set in and so far so good. Never seen it happen before, any other ideas slorex1.. THANKS

 

Check the plugs for tiny black pepper speckles...mild detonation causes this, it shifts the rings around and imbeds oil onto the plugs. Keep in mind that even though your AFR's might be on, you can still detonate from too much timing or too hot of a plug.