Hey guys, I'm in the process of tearing down my rear-end to check its condition and to make sure it has the updated thrust washers and to also check on what i think is a failing u-joint. At the same time i removed the 4th main cap to replace a leaky gasket and check the condition of the babbitt. When i pulled the cap i failed to notice where the oil hole was located but i just assumed it was supposed to be on top. After searching though the forum a few people advised putting the oil hole on the side so that it could not collect any debris and that it would still get plenty of oil to the bearing, any thoughts on this?..Thanks.
Hole goes up.
How much clearance between the tail shaft and the ball cap babbitt?
Thanks Herm, as far as clearances go, i haven't measured anything just did a basic inspection to see if anything was obvious, the babbitt still looks great inside the cap.
If you are getting to much oil going back to U-joint,you can turn it to one side.It will still get plenty of oil.
Thanks Jack, i think if one were inclined to move it, it would probably be best to move it to the 3 a clock position rather than the nine to take advantage of the rotation of the splash?
I would be inclined to put it at the 12 o'clock position.
Since that part acts as the "fourth" main bearing, Herm is offering an important hint. The position of the oil hole is not as important as the clearance of the bearing. A clearance of .004-.006 is spec. If too loose oil will flow into the drive shaft tube, not to mention the stress it will put on the crankshaft. Since you have it out, make sure it's right.
Oil hole goes up.
Can an additional hole[small] be added to the bottom so oil can drain back into the pan? so it
wont enter the tube
We fit clearance to .002-50, never under, and never over .003.