Determintation of spark advance.

[JEEPRUSTY]

I have been looking around for Igniters and have stumbled upon a few facts via the partfinder cross-referencing system BassCliff showed us.

It appears a mid 80s 250 and 450 used the same part number igniter.


*^*GSX250E GSX-250E GSX 250E " Black Hawk " - Years 1982 1983 *^*GSX400E GSX-400E GSX 400E " Katana " - Years 1982 1983 1986 1987 *^*GSX400T GSX-400T GSX 400T " Katana " - Years 1983 *^*GSX550E GSX-550E GSX 550E - Years 1983 1986 *^*GSX550ES GSX-550ES GSX 550ES " Katana " - Years 1987 *^*GSX550L GSX-550L GSX 550L - Years 1983 1986 *^*GS400S GS-400S GS 400S - Years 1986 *^*GS550EF GS-550EF GS 550EF " Katana " - Years 1986 *^*GS550ES GS-550ES GS 550ES " Katana " - Years 1984 1985 1986 *^*GS550L GS-550L GS 550L " Katana " - Years 1985 1986


I assume the igntion is factory set and immutable.
So how do you place one part number and one advance on such a wide range of bike?

I do notice that the pulsars of the gs500 are the same as for the 83-86 550s In 2002 or so the second pulsar was dropped and a new mutli tab rotor was used. Same coil several tabs of varied size.

[Big T]

I assume the igntion is factory set and immutable.
So how do you place one part number and one advance on such a wide range of bike?

It's called engineering

These low output motors just need a standard amount of advance

[JEEPRUSTY]

and some chinese folks who appear to have gone mad in the claims they make for this igniter.

http://shop.ebay.ca/xianda.cdi/m.html?_trksid=p4340.l2562

These prices are damned cheap if you need one. They make all our other electronics anyway.

[JEEPRUSTY]

It's called engineering

These low output motors just need a standard amount of advance

450s timing is quite different than the 550s and they are apparently using the same igniter.

It must be the rotor tabs I suppose.