can anyone confirm or deny the need to advance your timing on dual plug heads? im runnin a 80" shovel and i thought i read somewhere that starting is easier if you advance your timing by 5 degrees. its a kick only and anything to ease starting except a monkey in a box would be cool!

 

When dual plugging engines, it is necessary to retard your timing by about 5 degrees, in most cases, to achieve the best results. This is necessary because by adding an additional spark on the opposite side of the combustion chamber you will speed the burn of fuel and in essence advance your timing. Different heat ranges of spark plugs can also have an effect. Extended tip spark plugs will burn fuel quicker than standard or recessed tip plugs, because they are out in the chamber further. Timing, spark plug, heat range and jetting should be done by a good tuner for optimum results.

 

tcstd thanks for the info! i knew i had read it somewhere but my dyslexia must have kicked in cause i had it completely bassackwards.