Anybody got some pics of the oil pumps used in different years/engines?

In case anyone is interested, the pump used has a very interesting heritage. I followed patents back about 70 years -- they discuss how the pump was intended to avoid cavitation problems and to dissolve gases/bubbles into the pumped medium.

I would think there are more but here's a few:

2424750
2774309
2983228
3204564
3785756

 

Thanks a lot, now I have to run to the store.

I'm out of popcorn.

 

I would like some Orville Redenbacher Kettle Corn please.

 

We'll cook the corn in all the Mobil 1 Kibort is throwing out.

 

OOOO Carmel Corn! i have not been able to find that at the store anymore (make your self kind)

But i am wondering if there is a oil pump upgrade for better pressure and volume. im going to build up a 4.7 euro, so i will keep my eye on this post.

 

I prefer kettle corn

at some point the pumps were made wider for increased flow...but I am not sure when it happened?

 

Does the pump have a venturi? Also, does it resemble a turbo or supercharger? I'm sure the turbo version is much better

 

OK, funnyboys.

I've handled two variants ('80 and '84) and they're the same except for the shaft oiling.

 

Just use the one that's right for your block, I made the mistake of installing the wrong one and I had a mess on my hands.

 

Ok, I have some pics of one with a shaft oiling drilling. This I very strongly believe to be a deaerator circuit.

The bearing clearance serves as the metered orifice. The triangular or trapeziodal opening at the bottom of the block/bed-plate recess dumps into the sump area next to the pickup.

 

Here are some pics of MK's 4V block. The dumping recess is still there in the bedplate and the pump housing appears to have the area that was drilled.

Is the drilled passage in the pump body and shaft bushing what has been deleted? Or is the dumping recess closed on some blocks or?

 

Now, on a more serious note.

What has always raised my ire is when certain academics attempt to control access to information and limit the free exchange of ideas. They do not want you to have access to the raw data but rather their processed or accepted interpretation of it. They want to be the gatekeepers.

The next level is when they attempt to derail members outside the club by throwing out assorted red herrings like definitions or knowledge of jargon.

Recently we were treated to an example of this when the discussion of the general design of the pump in the Porsche 928 was sidetracked by an attempt to argue over the definition of a gerotor pump.

M.F. Hill is generally acknowledged to be the father of the gerotor pump though assuredly there are many people prior to him who worked on the design.

In U.S. patent number 1682564, Hill makes some very enlightening remarks in the specifications area.

On page 4, lines 60-73, he writes [my emphasis]:
The Porsche pinion gear has two less teeth. OH MY ! A mere "preference" does not a stricture make.

And on lines 126-130 of the same page:

The crescent element of the Porsche pump enables this.

And then on Page 7, lines 31-37, Hill writes:

Please, I encourage anyone remotely interested to read the full text of the patent and observe the images.

http://patft.uspto.gov/netacgi/nph-P...&RS=PN/1682564


I believe that it is very plain that the design of the pump in the 928 is in fact a member of the subset of gerotor pumps whose annular gears have greater than N+1 minimum teeth or lobes.

 

While i do find this interesting, don't patents expire after 20 years or so?

 

Didn't we cover this already?

 

Yes, that is correct. Patents are extremely useful storehouses of information and are intended to be.

Reading a patent can often give you an insight into what the inventor was thinking about in contemporary terms as well as his or her vision of the subsequent developments in the field. Much more than these two points is possible though.