Never tried a smaller gap with SAG ing plugs
since the gap is not adjustable on the NGK BUR 7/9EQ plugs I was using.
By the time I got SAG the first time, the center electrode had burned down to
the point where the gap was almost .100". Amazing that the engine
ran as well as it did.
BTW, comming up on 250 hours on Iridium plugs with no
SAG yet. Very little 100LL fuel used though.
Tracy;
Explain to me further: Are you
using BUR9EQ leading and 7EQ trailing? What is the part # of the iridium –
same?
250 hours on one set of plugs?
I’m happy with the performance of
the B9EGV, and have never experienced SAG – I also use little 100LL (and
they seem immune to fouling due to flooding); but I’m not impressed with
how long they last.
Al G