Can someone tell me the diameter of the tilt pin on a 1965 Mercury 3.9?? My motor didn't come with one and $30 for a new one is Crazy, I only Gave $100 for the motor...
Agree with what WildeOne said - a bolt will do just fine. Another option is to look at a "bone yard" of an outboard dealer or shop. You might luck out and find one on a discarded motor.