Ignition Timing Off by 2 Degrees

[rruddfan21]

hey guys. rebuilt the head and put everything together. when i went to reset timing, which was at 4 degrees BTDC, the distributor would not move any farther to advance timing. it says it should be set at 6 degrees BTDC. if seems to run ok, can i leave it at 4 and be in ok shape? thanks

[Crvett69]

did you use jumper wire or disconnect vacuum hoses?
if you did and its turned as far as it can go you may have belt off one tooth