Points Based Ignition | Electronic Ignition Upgrade
First post here, great site.
Installed new ignition advance springs on my CB77 (CB77E 10441xx). I think they may be the wrong ones. Can anyone give dimensions of CB vs. CA springs?
Retired Aircraft Mechanic
Correct spring is .970”ish but the CB/CL wire diameter is.040” vs. CA is .031.
If your spring are loose? Then the problem is the advancer stops are collapsed. I rebuilt these on every rebuild by machining large 10mm bushing that slide over the stock 8mm stops. This will allow much better throttle response by having 8-12 degrees of initial advance at idle and around 40- 42 on total advance above 3000 rpm.
If you need help with modification let me know.