I was thinking before I install my mark motor that I should do the timing chain guides and replace the crank gears with the one piece gear, or should I just not worry about it ? any and all opinions welcome.
Do It!.. My 4.6l just got trashed from the two piece gear shearing off the keyway on the crankshaft, which led to the gear spinning a 1/4 turn on the crankshaft. It tore alot of stuff up... . It left me with no choice but to toss a '02 Explorer 4.6l into it.. shucks!