-------------- Original message from "Kelly Troyer" <keltro@att.net>: --------------

Al and Group,

       Link to more info on the "Denso"  IRT01-31 plug.........From

Spark Plugs.com.........

 

  http://www.sparkplugs.com/default.asp?KID=2518

 

  http://www.densoproducts.com/more_info.asp?pid=17353

--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold

 

-------------- Original message from "Al Gietzen" <ALVentures@cox.net>: --------------

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

I think that would be the Denso IRT01-31; about $35.00 each.  They apparently use iridium for both electrodes.  But if they last 10 times as long, it’s worth it.

 

Kelly wrote:

In case you are not aware of it the NGK B9EGV is available

in Iridium.......BR9EIX part # 3981...........Has a resistor...........

 

I have found that on the standard B9EGV the ground electrode erodes and the gap gets wider.  Having an iridium center electrode may not improve the lifetime; although they are only about $1.50 more than the standard.

 

Al