Re: [AMC-list] Oil Pressure III

[wrambler242@xxxxxxxxxxx]

My gauge must be pretty accurate on the MOPAR HV 4.0L. It shows about 73 psi cold. Holds at 37-45 hot. 
     I know the HV pump is not needed in the 4.0L. However it was new and free, so I used it. 

    I did pay special attention to polishing all return areas to help the oil get back to the pan. 

   So far no sign of troubles, even with the 4QT car pan.  


Sent from my BlackBerry® wireless device from U.S. Cellular

-----Original Message-----
From: Davis Martin <martin-davis@xxxxxxxxxxxxx>
Sender: amc-list-bounces@xxxxxxxxxxxxxxxxxxxxx: Sun, 21 Nov 2010 19:24:20 
To: AMC, Rambler, Nash, Jeep and family<amc-list@xxxxxxxxxxxxxxxxx>
Reply-To: "AMC, Rambler, Nash, Jeep and family" <amc-list@xxxxxxxxxxxxxxxxx>
Subject: Re: [AMC-list] Oil Pressure III



Ken,
Interesting...Ill have to check my 72 TSM see if its different. Wonder how they 
get to 75 when the pressure relief is set at 60? 

 Davis


________________________________
From: Ken Ames <ameskg@xxxxxxxxx>
To: "AMC, Rambler, Nash, Jeep and family" <amc-list@xxxxxxxxxxxxxxxxx>
Sent: Sun, November 21, 2010 5:55:45 PM
Subject: Re: [AMC-list] Oil Pressure III

1981 TSM says normal is 13psi at 600, 37-75 at 1600+, with a max of 75. I
believe all the later 6s and 8s are the same.  : )

Ken 


Quoting Davis Martin <martin-davis@xxxxxxxxxxxxx>:

> My 67 Rambler TSM says min of 10 PSI @ 600 RPM. And 45-60 PSI @ 4000RPM. I
> dont 
> see where it says anything about 50% more? 
> 
> 
> 
> 
> 
>________________________________
> From: Ken Ames <ameskg@xxxxxxxxx>
> To: "AMC, Rambler, Nash, Jeep and family" <amc-list@xxxxxxxxxxxxxxxxx>
> Sent: Sun, November 21, 2010 9:27:57 AM
> Subject: Re: [AMC-list] Oil Pressure III
> 
> As I mentioned earlier, 10/1000 supposedly is for chebbys. AMC TSM says just
> about 50% more.
> 
> Ken
> 
> Quoting masheen <masheen@xxxxxxx>:
> 
> > I agree.  10lbs of pressure per each 1000 rpm is what I always read as the
> 
> > acceptable norm for a stock engine.  I've never had any problems with
> mine.
> > I would think the stock low oil pressure sending unit probably has a spring
> 
> > inside that's designed for a minimum psi before it triggers the idiot light
> 
> > as is the case when initially cranking up the engine.
> > 
> > 
> > 
> > ----- Original Message ----- 
> > From: <theamcguy@xxxxxxxxx>
> > To: <amc-list@xxxxxxxxxxxx>
> > Sent: Sunday, November 21, 2010 10:00 AM
> > Subject: Re: [AMC-list] Oil Pressure III
> > 
> > 
> > > Oil pressure can be thought of in terms as resistance to flow. 40 lbs of
> 
> > > oil
> > > pressure means that the pump is overcoming 40 lbs of resistance before
> the
> > > oil will flow. The important things are: Is the oil light off at idle? Do
> 
> > > you
> > > have 10 lbs of pressure for every 1000 rpm If you have both those then 
> > > your
> > > are within spec Although it does sound to me like your rebuilder set
> > > everything up on the loose side with respect to your clearances. The only
> 
> > > way
> > > at this point to raise the pressure would be to tighten up on the main
> and
> > > rod bearing clearances.
> > >
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