Changing my water pump & timing belt on my '86 5ks 2.2 I5 N/A and need to know the size socket needed for the crankshaft pulley bolt........would be greatful Also, what would be the advantages/disadvantages of advancing the timing on this when I put the new belt on.........the car is strictly stock -so far..... Thanx in advance Al Kwiatkowski '86 5ks 130,000 Pristine condition