Re: [Amc-list] New aluminum oil pans

["Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>]

Because ground clearance is important on a road racing car, the bottom of
the car is very close to the ground, the oil pan cannot be some "deep" thing
that sticks below the crossmember. Many road racing cars have dry sumps with
external lines connected to the pan to scavenge the oil out of the pan and
keep it away from the crank. Many small displacement road racing engines (4
cyl) will have a central trough that the oil falls into in the pan and is
then scavenged out to the cooler, filter and reservoir. Deep sump and even
wide pans that add the oil in a bigger horizontal sump carry all the oil in
the pan which without and even with baffling will end up splashing onto the
crank during a corner that generates a couple of lateral g's, robbing
horsepower, potentially uncorking the oil pickup and causing engine damage.
External oil pumps driven off of belts work much better. The reservoir
always has oil in it to send into the engine through the pump and cannot
loose prime by having the pick up go dry. Think of it the same way you think
of a fuel pick up at the back of the fuel tank in a drag car for
acceleration g's and maybe that will give you a visualization.
Armand



 ----- Original Message ----- 
From: "Davis Martin" <martin-davis@xxxxxxxxxxxxx>
To: "AMC/Rambler owners, drivers and fans." <amc-list@xxxxxxxxxxxx>
Sent: Wednesday, April 30, 2008 10:47 PM
Subject: Re: [Amc-list] New aluminum oil pans


> I don't understand why anyone would want an external pickup. Does it have
to do with road racing? I have never done that. I drive on the street and at
the strip but have only used the deep sump internal pick up.
>    Davis
>
> Frank Swygert <farna@xxxxxxx> wrote:
>   Well, I don't have a need for something like this, but I do have a
question/suggestion. If the pan is made for an external pickup it should be
easy to make a plug for the external line, making one pan fit both. By
internal pickup I'm assuming you mean a stock type pickup. I'd think most
who want a pan like that would want the external pickup.
>
> ------------
> Date: Wed, 30 Apr 2008 06:55:06 -0700 (PDT)
> From: Nick ALFANO <71amx@xxxxxxxxxxxxx>
>
> I am looking for feedback on the desire for a new V8 all aluminum deep oil
pan. It will hold approximately 8qt of oil (without hanging down too low),
have baffling, trap door and windage tray. Working on two options, external
pick up and internal.
>
> -- 
> Frank Swygert
> Publisher, "American Motors Cars"
> Magazine (AMC)
> For all AMC enthusiasts
> http://farna.home.att.net/AMC.html
> (free download available!)
>
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