audifreakjim wrote:The 2nd gear collar is pretty much locked up, *sigh*. I am beginning to think I am destined to run without a second gear. 1st is a bit difficult, but still works, what are the chances of it totally freezing up first gear? As of now I am still going to run Thunderhill, but minus second gear. I can start the car in third if I must...
On a positive note I fixed my rough idle today that I have ALWAYS had. I was playing with dwell and based on our discussion earlier I backed off the main dwell #. Then I read the description for minimum dwell that says it allows for a hotter spark at idle and is measured in degrees of engine rotation. I had a value of 10, so I put in 40. The idle jumped up about 150 rpms and is silky smooth now. Wow. 35 worked pretty well, but my initial swing at 40 was still the best.
Try 20 or 25, 40 is a bit much and could cook the coils at lower RPMs.
The purpose of that field is to provide a minimum dwell at low RPMs to make a sufficiently hot spark.
This has the effect of running higher than programmed dwell times than your base dwell setting.
At some RPM, the duty cycle increases to the point that you run constant timed dwell instead of dwell% duty.