i made up a timing disc on solidworks and converted it to jpg so you
should be able reduce or enlarge it to your required size and print it
off. you can also cut it down using the circles marked as a guide if
they are close enough for you. you might want to stick it to a piece of
card.
it is in 10 deg intervals and should be usefull if using the tuned pipe
designer or if you are modifying the timing on your engine.
i think 10 deg will be enough im sure you can eyeball it well enough if
to see if its inbetween to get 5 deg :)
http://i121.photobucket.com/albums/o239/al6600/timingdisk.jpg

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al6600
al6600 - 31 May 2007 23:29 GMT
i found another one on a web site its better than mine.
http://www.tavia.com/free_degree_wheel.html

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al6600