batman wrote on 03/28/17 at 21:01:13:R1-cowboy ,I like your list of mods ,except the last one,I believe going to chain drive may be counter productive for the use you intend.the TDI ignition has about 5 degrees of advance which plays out at about 5000 RPM (that's about 80 mph in 5th gear) ,unless you think you'll be going faster in the twisties ,going to a higher ratio with chain drive may hurt your performance.
The Savage has 5 degrees of advance below 2,000 rpm.....then the advance increases as the rpm rises.....up to about 30 degrees total advance. This means that as the rpm increases, the ignition advances to provide the spark at the proper time. It is not computerized with knock and temperature sensors like a modern fuel injected engine - but the technology is about equal to the CV carb in sophistication. You can cruse at 3,500 or 4,000 rpm quite nicely....the engine doesn't suffer in any way, as the engine is designed to run well at any rpm between idle and redline.
We have 2 sources for the ignition advance curve. One is the Suzuki Shop Manual:
Reelthing wrote on 11/24/08 at 08:00:15:The LS650 SSM lists the ignition timing @5deg btdc below 2k rpm and 30deg btdc above 4k rpm - we've never had plot posted here of the actual curve (that I remember).
Another member used a signal generator and oscilloscope to figure out what the advance curve was. He admitted his equipment was a bit old and there could be some inaccuracy in his results - but he found that the advance kicked in after 2,000 rpm, and that it advanced pretty quickly up between 2,000 - 5,000.....and then leveled out. His results are pretty much in agreement with what the Suzuki Shop Manual says - however it does not provide actual values for the amount of the advance:
ratz wrote on 05/27/10 at 19:53:37:I'm playing with the CDI on my '96.
My first try showed an advance curve that ramped up fairly quickly from 2000 RPM through 5000 RPM,then kind of leveled out from there to 7000 RPM.
I didn't see the timing retard,as was referred to earlier in this thread,it just didn't advance much at that point.
I didn't try anything above 7000 RPM,think I might on the next couple of tries,just for giggles.