Paul, pass this along to Jerry and have him go to the site below.  Paul Yaw also has a clear article on using a dial wheel to time with.  Jim Brewer

Mazda Factory Peripheral Port

IO 86° BTDC
IC 75° ABDC
EO 73° BBDC
EC 65° ATDC

Taken from Paul Yaw's excellent site--everyone should print the technical articles and read over and over and .....
http://personal.riverusers.com/~yawpower/dectech.html

 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2002 All world wide rights reserved.