Well its been a long struggle to get my Mustang reliable and trouble-free since the re-build but I made great strides with summer. One thing that I noticed was that the engine idle somewhat high (sorry never put a tach on it) in Park, but the when placed into gear the engine would almost stall out and had a very rough idle. I finally timed the dizzy in both park and drive and found out that the inital timing was dropping like 8*-10* I bumped the timing up to about 8* in Drive and it idled pretty good; but then is idled really high in Park . So my question is why is there such a drop? I was always under the assumption that the intial timing of the dizzy should stay the same (or vary just a little) between Park and Drive.
For some background here is the current state for the engine
-Rebuilt 200 with 0.030" over pistons. CR is about 9.1:1
- Carb is model 1940 w/o the SCV
- DS-II dizzy with the lighter spring upgrade. Dizzy was a JY find.
- Post vacuum (verfied no vacuum to the dizzy at idle)
- "Larger" camshaft (I forgot the specs)
For some background here is the current state for the engine
-Rebuilt 200 with 0.030" over pistons. CR is about 9.1:1
- Carb is model 1940 w/o the SCV
- DS-II dizzy with the lighter spring upgrade. Dizzy was a JY find.
- Post vacuum (verfied no vacuum to the dizzy at idle)
- "Larger" camshaft (I forgot the specs)