Re: 427 side oiler excessive total timing
Outlaw, I am a little concerned that maybe you are overthinking this one. Unhook the vacuum advance and make believe its not there for a while
1 - Since you verified TDC, assuming you are 100% sure of how you did it, we'll assume its good. So that rules out a "bad" balancer meaning slipped ring or something like that or a bad timing tab. If zero = zero +/- 1-2 degrees, you are good.
2 - Total timing doesnt mean "timing with vacuum advance" The term total timing means only "initial plus mechanical" So in your case, if you have yours set to 20 degrees mechanical, set the initial at 16 BTDC with the vacuum advance unhooked and you are good. I recommend a dial back timing light to check both initial and total, it makes it very easy. 36 is a good safe logical goal.
3 - So if you have 20 mechanical and 16 initial....will it still start? Thats where I am confused. If not, go 24 or 22 inside the distributor, and then set initial to 12-14, still 36 total, but it will allow easier cranking with less initial
4 - If you cant get it to fire at 12 BTDC, you have a starter, wiring, or battery issue, not a timing issue
5 - Once you get that squared away, you can hook your vac advance to ported vacuum for a little more oomph, and 50-60 degrees for total plus vacuum is right on track.
If I am missing the boat, let me know.
FYI, I run 14 initial, 22 mechanical, all in by 3000 in mine, and the vacuum advance adds another 10 on top of that.
As far as your comment on more timing for FEs, its not true in the sense that you are interpreting it. The FE doesnt have the greatest combustion chamber and needs 36-38 degrees total to make the most power (+/- depending on the head) however 36-38 IS high compared to other motors with a relatively small chamber.
If yours sounds good, I am guessing within a 5 degree window or so, you are having more of a "interpreting" or "checking your timing" issue than a real issue. However, I agree we need to figure out whats going on.
Are you putting the timing light on the correct plug wire? (Pass side front)
70 Sportsroof, 427 FE/489 cid, TKO-600, 31 spline 4.10, A/C. modified Mass-flo EFI/reprogrammed A9L/CnC ported Victor.
Last edited by My427stang; 10-02-2008 at 09:24 PM.