In Reply to: Timing marks 8n posted by AAm on July 24, 2020 at 22:03:52:
FWIW & FYI, for those others who need to know: As JMOR said, timing marks are numbered on the flywheel in two places exactly 180° apart and is stated in the manuals. The timing marks can be observed on the flywheel bell housing under the window port. When engine is off, crank/flywheel stop at one of the two places so that is why you sometimes get ringgear teeth wear there. Angle mount distributors are all set and timed the same with the late 8N (after s/n 263843)timed at 4° BTDC at 400 RPM, the 600 at 8° BTDC, and the 800 at 5° BTDC. Breaker points are set at .025" +/- .001" . You need a timing light to set correctly and the procedure is also in all the manuals. Firing order is: 1,2,4,3.
FORD 8N ANGLE MOUNT DISTRIBUTOR:
FORD 8N (AFTER S/N 263843), NAA, 600, & 800 TIMING:
FORD 8N TRACTOR ESSENTIAL OWNER/OPERATOR/PARTS/SERVICE MANUALS: