Saw that too. Full circumference quarter prolly caused the broken clip there. It was forced down while squeezed out from under the gasket.

Should look like this. Flat top against valve cover so it cannot escape.

 

This kind of overdid it?


Or this kind of overdid it?

 

https://www.ford-trucks.com/forums/1...-0-52-mod.html

 

I wonder which pump provides the needed volume with the least amount of air? My thought is if it’s not working as hard then there may be less cavitation.

 

Only one way to find out. Gather data and run it through this analysis:
https://www.sciencedirect.com/scienc...69190X16302659

 

I doubt work would want me to take our FFT equipment offsite for a test on a 21 year old Powerstroke.

What are your thoughts?
would a thinner but wider pocket on the pump gear cause more or less of a tendency for aeration?
I’m assuming the gear tooth itself has became a smaller width so the same volume can be pumped at each rpm.

 

No clue without data to tell me how hard the pump is sucking the oil out of the pan. The critical measure is if oil is getting sucked so hard that it drops below vapor pressure. That is when cavitation occurs.

 

If you have fewer lobes with deeper pockets, I'm assuming there will be greater suction within the pumping chamber vs more lobes with more shallow pockets. But I'm sure there's plenty of nuance that'd be needed for a proper understanding.

Definitely the latter haha the former is for Fridays and Saturdays

 

What is the extra 2 cents?

 

A teaser!

 

An opinion. *badum ching*

 

Whoa. Something has been bouncing around in there. Which cylinder is this?

 

Yikes!

And to think it was still running strong.

Cracked as well?

 

That picture is the visual equivalent to "ah ha..."

 

zip ties. .