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RE: Lubricants

To: "Power British Performance Parts, Inc." <britcars@powerbritish.com>, Triumph List <triumphs@autox.team.net> charset=ISO-8859-1
Subject: RE: Lubricants
From: Tony Rhodes <ARhodes@compuserve.com>
Date: Wed, 10 Nov 1999 13:33:27 -0500
Message text written by INTERNET:triumphs-owner@autox.team.net
" As liquids (including oils) are generally considered to be not compressible
materials, the pressure in the oiling system should be constant throughout the 
system."

Brian, I hate to disagree with you here.  Yes, oil is essentially 
incompressible, but
that does not mean that the oil system must be at the same pressure throughout.

Think of your garden hose.  Your tap has 20 or 30 psi going to it.  Now you 
open it
part way and let the water flow freely from the open end of the hose.  What is 
the
pressure of the water at the open end?  Not much.  What is the pressure behind
the tap?  20 or so psi.

I would agree that BEHIND the flow limiting orifice, the pressure is constant.  
After
that orifice, the pressure may well be very low.

In my old engine, where is the flow limiting orifice?  Ilike to think it is the 
bearnigs, etc.
But it might be the pressure relief valve!!!!  I may have VERY low pressure at 
the bearings!?

Hopefully very soon my engine will indeed have 70 psi all the way to the 
bearings!

-Tony

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