On Friday 26 January 2007 04:18, Les wrote: [...] OT
Do you know how to "shape" the springs on the centrifugal advance, or how to control the curve on the vacuum advance?
Yup, been there, done that. Most effective on an old Nash Ambassador big 6. 115mph@19mpg, 70mph@22mpg, whupass on any flathead ford in town. Hard on rings though when you push that engine above 7000 revs. 4 3/8" stroke=4500+fps piston speed=broken rings. Guaranteed. /OT