AMC V8 'Police' oil pan variant

Yep, the quote I posted about was from the SS/AMX History page. So yep, Stock pan on the SS. Dunno where all this other stuff is coming from. and the photo is from the same page. That mod they suggest for the SS/AMX. I agree on the Police ban, shoulda did the baffle too. But in reality, what do Police cars do the most. Idle. Idle all day long. The 175 MPH Police Pursuit!!!!!!!!!!!!!!!!!!!!!!!!!!! stories are great for people who don't leave the house, and 12 y/o kids, but reality is, that was very rare and highly exaggerated.

Finally got around to making a shop drawing, alluded to in my previous post here on this topic.

IMO, I would prefer to label the 'Police' oil pan a 'Jeep' oil pan instead because it looks like it was made to cup oil around the pickup tube suction housing in uneven terrain, in a low rpm situation because of the arguably small oil return hole in the 'cup' would plausibly not allow high volume flow to the pickup tube (but blocking it off on three sides instead)

IMO, this design would only aggravate what hydraulic system designers caution against. They specify oil suction tube depth to oil level measurements in order to prevent oil-air entrainment caused by vortex formation around the suction tube itself.

This otherwise well known phenomena of vortex formation around the oil suction tube is indeed moderated by raising the oil level in the oil sump reservoir.

In a high volume system, vortex formation around the suction tube is known to cause oil-air entrainment.

Please feel free to do your own research on the Internet; there is a fair amount of discussion on this topic concerning Industrial type systems. -Specified suction tube to depth requirements etc.

Unfortunately I don't have an AMC car right now with drop out center section crossmember to test this oil pan design but I do plan to test the concept on my current Rambler V8 engines (but they have a different situation because the high pressure bypass return pipe creates circular oil flow around the pickup housing instead)

So I can't say I have tested this design but I feel sure it has merit, if only for it's anti-slosh potential.

The 'X' pattern plates could be attached to the underside of a stock AMV8 oil pan baffle plate, and that assembly could be made to 'bolt in' to the stock pan (as a complete assembly) for ease of cleaning the pan? (weld tabs onto the sides of the pan to bolt in the re-modified assembly?)

As tested on industrial static hydraulic systems, the anti-vortex pickup tube assembly should work on it's own with no 'X' bracing work done to the stock oil pan because the 'two tier' horizontal plates are proved to disrupt downward vortex/spiral flow to the suction tube entrance.  (the vertical '+' plates will still serve to provide some anti-slosh effect -but it's the 'two tier' horizontal plates that are proved to disrupt vortex flow)

With no anti-vortex control plates on the suction tube assembly, it does appear that the stock oil bleed hole on top of the suction housing assembly may contribute to pull air bubbles into the oil if a vortex reaches low enough in a high flow/volume situation (plausibly in the higher rpm ranges)
-the 'bleed hole' could be brazed shut (you judge/you decide)





Thanks AMC Forum for giving us a space to discuss our favorite vehicles.
 

Like the idea of KISS,

Note: I'm assuming in the second drawing that we keep the stock 'windage tray' and the 'X' pattern plates are merely added on underneath, inside the sump area. Sorry the second picture makes that point less clear/not really showing how the stock 'windage tray' is retained.