Here is website with AR2592 reference
Bill Schertz
KIS Cruiser # 4045

www.sparkplugs.com

This is exactly what we are looking for.
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Thanks for the tip Bill.
I have updated the web site with these two tables.
http://www.rotaryeng.net/ignition.html
All about spark plugs for rotary engines.

Paul Lamar ...No rotor no motor.

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