Here is some information I picked up on an RX-7 site regarding ignition, my
experience tends to confirm it.

Spark Plugs
On a rotary car, particularly turbocharged rotaries, the spark plug life is
very hard and short lived. Typical spark plug life is around 15,000 miles on
a stock car and less as they are modified. In order to keep the car running
up to optimal performance and lessen the chance of damage to the motor, we
highly recommend you check your plugs at regular intervals and replace them
as needed.

Spark Plug Wires
For maximum spark, you want as much energy getting to the plug from the
ignitors. The object is to keep the resistance to a minimum without creating
any 'noise' which can interfere with some of the computers built into the
car. The stock wires don't offer much in the name of performance and will
increase in resistance with age. For upgrades, we offer two types of plugs
wires; a high performance set suited well for both street and race cars and
a standard, original equipment style set by NGK.

Ed Anderson
----- Original Message -----
From: "John Slade" <sladerj@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, November 28, 2002 9:10 AM
Subject: [FlyRotary] Re: Spark Plug Fouling


> Thanks for the info, Ed. In case it helps, I found the NGK B9EGV and NGK
> B10EGV plugs at http://motodepot.com for $19.95 a pack of 4. I'm just
about
> to order my spark plug wires. Which plug wires would be best with these
> plugs?
> Regards,
> John Slade
>
>
> >>  Homepage:  http://www.flyrotary.com/