flyrotary@lancaironline.net Mailing List Archive

The Iridum plugs are not the old BUR series I used to use. I'll have to get that number for you. I pulled them out of the Renesis crate engines I bought so I assume they are the standard plugs used in the RX-8 car. They look similar to the old style plugs with adjustable gaps but the electrodes are extreamly fine wire. Very expensive (so I'm told) and fragile looking but they work great.

Tracy

On Fri, Jul 18, 2008 at 12:10 PM, Al Gietzen <ALVentures@cox.net> wrote:

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