Ford 8N engine kits
Which overhaul kit do you need? 1st: 3 or 4 ring pistons. 2nd: Sleeve thickness 0.040 or 0.090 inches. 3rd: Oil pump gear 9/16 inches or ¾ inches wide. 4th: Rotating or non-rotating exhaust valves? Rotating valves have DIFFERENT KEEPERS OR KEYS on the exhaust valves compared to the intake valves. Non-rotating exhaust valves have THE SAME TYPE OF KEEPERS OR KEYS on the exhaust and intake valves.