From: Marc Wiese
Sent: Saturday, March 05, 2011 2:22 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: 20B Numbers?


20B MAZDA in black outline paint; C927 on all three rotor housings….

Marc



From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Thomas Giddings
Sent: Thursday, March 03, 2011 7:57 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Numbers?



Here you go everyone: The engine should be stamped on all the rotor housings and sideplates. Look on the top of the rotor housings where is says "Mazda 20B"


Pre A code: 3 digit numbers only, no letter
A code : Letter A and 3 digit #
B code : Letter B and 3 digit #
All of the above are small dowel pin land motors

C code: letter C and 3 digit #
D code : letter D and 3 digit #

The C and D code have the upgraded sideplates, thicker dowel pin lands. Approx: 4mm thicker