I have an IO-390 that is equipped with dual P Mags.
The engine requires long reach plugs with the long reach brass adapters.
P mag documentation suggest the NGK BR8ES plug, this plug when installed in the brass adapter is too short the electrode is 1/4" inside the adapter.
What plugs are used in this configuration?
Talked with P Mag and they said to use the DENSO IKH27 plug, tried numerous auto parts stores, no one stock that plug.
Question, Is the DENSO the only plug that will work?
Dick
The engine requires long reach plugs with the long reach brass adapters.
P mag documentation suggest the NGK BR8ES plug, this plug when installed in the brass adapter is too short the electrode is 1/4" inside the adapter.
What plugs are used in this configuration?
Talked with P Mag and they said to use the DENSO IKH27 plug, tried numerous auto parts stores, no one stock that plug.
Question, Is the DENSO the only plug that will work?
Dick