Connecting Rod Oil Squirt Hole

[69-er]

After looking through the 68 Pontiac service manual, in the V8 section, I noticed that in the procedure to hang the rods on the pistons it says to position the oil squirt holes toward the camshaft. In other words, up. The machine shop installed them the opposite way. The holes are pointing down and away from the cam.

Before I started to assemble the bottom end, and not knowing what this hole was for, I remember looking at this area of the rods. I really don't see how any oil could get to this hole unless there was a hole in the bearing too.

My question is will this cause problems with cam or piston lubrication?

Thanks!

Larry

 

[melsg5]

Actually Pontiac discontinued the oil hole at the end of 1972. If your bearings dont have a hole that lines up it wont squirt. Did you ask your engine builder?

 

[69-er]

Not yet. I want to make sure if this is going to be an issue before I tell them. I did find that item about the holes being discontinued.

I've also been reading about the chamfer on the rod needing to be on the crank side. I do remember looking at this area before I assembled the bottom end and the rods I looked at all had varying amounts of chamfer on both sides, actually little to almost none. Nothing that would make it obvious on how it should be installed.

There is no binding and all the side clearances are within limits. The rods are right up against each crank throw. So, in this regard, it doesn't seem to be affecting the assembly. However, I still don't like it.

I think I know what my decision is. Damn it!!!!!!!! At least, I need to go back inside to look at them again.

 

[69-er]

Well, after I removed the oil pan, it was plain to see that the rods were indeed installed correctly!

It was just too hard to see the squirt holes though the top of the engine. After I looked again, I could just barely see them. Turning the crank might have helped position the rods a little better too. They just weren't very apparent before.

Now I know why I didn't have any indication of problems when I was assembling the bottom end.

Thanks for all your help! Back on track!

Larry

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[melsg5]

Glad to hear you have resolved your problem. Good luck with the project.