I received an adjustable timing light this weekend (thanks mom) and checked my timing @6000 RPMs. I had previously timed the car at idle at 10 BTDC thinking it would get me to about 30-35 BTDC with full advance. When I checked the timing with the adjustable light I was pretty close, but it needed to be advanced about 3-4 degrees to get it between 33-35 degrees BTDC. If set to 15 BTDC at idle, the advanced timing was beyond 35 BTDC at full advance. this is with the vacuum advance connected.
RazorRacer, with disconneting the vacuum advance you may not running into greater than 35 BTDC and running where JW says these cars run best.
Here is one of the threads w/ JW's recommendation on timing.
If it the vacuum advance was connected you would probably have detonation. I didn't check the timing with the cvacuum advance disconnected at 6000 rpms, but I'll check asap.
FWIW, my cold idle did not raise to about 2000 rpm upon start up. I threw a emissions analyzer in the car and discovered I was running really really rich, in excess of 14. Upon setting the fuel mixture to 3.5 the cold idel rose to about 1500 RPMs and dropped to 900 RPMs at idle in about a minute. At least on my SC, if the fuel mixture is way to rich, the ability of cold idle to work properly was impeded. Just thought I's throw this out.