L-72 tune up

[@wot]

Run nthe rpm up high enough to achieve max centrifugal advance, then check the timing and set for about 36 degrees without any vac advance. You'll need a decent dial back light to get an accurate reading. Test vthe car, pull a couple of plugs and check for any detonation, and finally make any minor timing adjustments to the total timing. Then connect the vacuum advance and test again for detonation.