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What diameter bushing

Posted: Fri Apr 03, 20 10:29 am
by Dave-R
Anyone know what diameter the MSD advance bush needs to be to get the advance down to 14 degrees?

It's a pain doing it trial and error. 10mm is giving me 17 degrees. I will try 10.2mm next but if someone has an FBO 14 degree spare they can measure that would be handy.