What are the advantages of using automotive Spark plugs over the old aviation ones? Larger gap so larger spark (could we not just gap aviation ones wider)? Cheaper?
The 10+% fuel efficiency saving looks great on paper - do people actually get that?
I'm looking at whether to install a P-Mag in an AEIO-360 (PtoF SA Bulldog) since we have one Slick mag at its 500 hour limit and the other one potentially needing overhauled also due to service bulletin.
I understand early P-Mags had some issues but they are pretty reliable now, so should last longer than 500 hours.
Other disadvantages I can see is that manual says they need taken off every 100 hours to be checked, and they aren't self powered below 900RPM (or there-a-bouts) so would need to be careful when flaring to land if the other mag failed (and the power supply failed also - seems unlikely!).
Any other experiences?