Originally Posted by
keavze
more nitro and hotter plug will advance the ignition point till maybe too early and detonation occur, can i increase the deck height (reduce compression) to 'compensate'?
by the way, how to tell if you've retarded the ignition too much?
i know if you've advanced the ignition too much, detonation will occur and you'll get pitting on the piston and button.
Yes more nitro not only advances timeing but incremets compression, so you must compensate with increasing your deck height and maybe move to a colder plug.
To much retarded ignition will reduce overall power noticeable.
AFM