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Because it won't all get oiled. The lower part of the distributor forms part of the oil's path between the driver and passenger side lifter galleries. Without the right tool or an old distributor, the oil never gets to the lifters on the passenger side (2,4,6,8) and just flows back into the pan. Oil to the valvetrain and pushrods is supplied from the lifters. Without the right tool, the passenger side valve train will not get oil.
Disagree, you need the collar otherwise, you will only get oil to half the valvetrain. Also, rotate the crank while priming to help get all the lifters and pushrods primed.
If you are going to rotate the crank, then why not just remove coil wire and turn engine over a few times before cranking. That will oil everything and should not hurt anything as it is not at high rpm.
Because it won't all get oiled. The lower part of the distributor forms part of the oil's path between the driver and passenger side lifter galleries. Without the right tool or an old distributor, the oil never gets to the lifters on the passenger side (2,4,6,8) and just flows back into the pan. Oil to the valvetrain and pushrods is supplied from the lifters. Without the right tool, the passenger side valve train will not get oil.
I learn something on here almost daily,,,,,I use a old Dist. and turn it with a big electric drill and until I see oil oozing from all the rockers,,,sometimes it takes a while.