Quote:
Originally Posted by bobH
With due respect to Jim and others, after one uses a timing light, don't you go back to post 6, and 'adjust to suit'? I know I do, no matter what the engine is. I almost always add a little more advance, but not much on flatheads. 
I use a light to verify i'm not outta the ballpark. |
In my experience it depends on the engine. I work on collector cars only, I don't have a "modern" car daily car is a 1966 Cortina. Most stuff I work on I time it on a light, then out to my favourite back road hill for power timing. Almost always ill adjust the timing by seat of the pants, and get better results than with a light only.
Huge but here, stock flatheads, use the timing light to stock point and call it done, fringing with it on the road will not be fun. These things will fire "ok" with the timing off quite a bit. But not the best. Advance till you here a ping then back it off a tad, all the stock ones I've done that ping don't happen before power drops a good chunk, why would you keep advancing after that?
To much advance even a bit to much is just not good, it will cost power.
As you can tell I'm with bubba, get a tdc Mark sorted and use a light.
Martin.